Organic electroluminescent device

FIELD: physics.

SUBSTANCE: organic electroluminescent device with a set of layers (1, 2, 3) for emitting light (4) through a partially transparent top electrode (3) has a conducting foil (1). The foil has a base material with top and bottom sides as a substrate and a first metallic layer with such thickness having a surface resistance 0.05 Ohm/m2 on the top side of the base material (11). The later has at least a first metallic layer (121) as a bottom electrode and a second metallic region (122) which is electrically insulated from the first metallic region (121) and can provide direct electrical contact with the transparent top electrode (3), a stack (2) of organic layers deposited on the top part of the bottom electrode (11) and designed for emitting light (4), a transparent electrode (3) on the top part of the set (2) of organic layers and at least a partially transparent protective element (5) which covers at least the top electrode and the set (2) of organic layers.

EFFECT: design of large organic light-emitting devices with uniform illumination on the entire light-emitting region.

10 cl, 4 dwg

 

The present invention relates to a large organic electroluminescent devices (organic LED or OLED) with flexible substrates and uniform brightness on the radiating surface.

Standard organic electroluminescent devices now contain a set of organic layers placed between two electrodes deposited on a glass substrate. In relation to the direction of light emission is possible to distinguish two different types of organic electroluminescent devices. In the so-called lower emitters of radiation light out of the organic electroluminescent device through the transparent bottom electrode (usually the anode) and the transparent substrate, while the second electrode (upper electrode, usually the cathode) is reflective. In the so-called top emitters of radiation light out of the organic electroluminescent device through the transparent upper electrode, the lower electrode and/or the substrate is reflective. In most cases, the layer structure of the lower radiation simply inverted for top radiation.

Organic electroluminescent devices of both the lower and upper radiation, using conventional thin-film electrodes with high surface resistance equal to or greater than 0.1 Ohm/Quad is at, where the term "square" means the area of the electrode. The resistance of the anode and cathode imposes restrictions on the upper size of the area light emitting surface, if uniform brightness must be obtained over the entire radiating area. For systems with existing materials, this area is of the order of several tens of square centimeters. For organic electroluminescent devices in the configuration of the upper emission limit dimensions may be more stringent, especially if the top as the material is ITO. For optimization of electrical parameters ITO difficulties are created by the optical requirements and technological constraints on the temperature. To further increase the area of light emitting surface of the organic electroluminescent device, it must be divided into separate fragments to reduce the size of the individual electrode. Each fragment can be considered as a light-emitting slice organic electroluminescent device. Slice of organic electroluminescent devices are interconnected on the substrate metal conductors. The total area of the light-emitting surface of the organic electroluminescent device consisting of fragments is equal to the sum of the squares of light is sluchayah surfaces of each fragment. For applications with a large area of the resistance of metallic conductors must be below 0.01 Ohm/square. In addition, thin-film technology is insufficient for solutions for large areas, because the resistance of thin layers is too large, and the production is quite thick layers with the required resistance is expensive and takes a long time.

European patent application with application number EPOS 101161.7 discloses an organic electroluminescent device of the lower radiation with metal foil pasted on the upper part of the upper reflecting cathode to protect the organic layers in order to guarantee the long service life of the device and to improve the electrical conductivity of one of the electrodes. This technique is not applicable to the emitters of the upper radiation as thick foil covering the top of the upper electrode, to prevent the radiation of light in the upper direction.

The patent application U.S. 2003/234608 discloses an organic luminescent device with a multilayer anode.

The patent application U.S. 6680578 B2 discloses an organic source of light radiation with multiple organic layers and insulating separators located between them.

The patent application U.S. 6835470 B1 discloses an electroluminescent device with a steel substrate, maintaining the second aluminum layer, covered electroluminescent organic semiconductor.

The patent application U.S. 2005/253507 A1 discloses a display device having an isolated substrate, the logic element electrode formed on its surface and a closed insulating film of the logic element. The electrode logical element formed using a semiconductor layer which is formed on its surface with an insulating film, and an insulating film formed on its surface with runoff electrode, which reaches the semiconductor layer and is connected to the anode, to be a source electrode, which reaches the semiconductor layer.

The patent application U.S. 2004/124763 A1 discloses a flexible display device containing a flexible base with lots of pixels organized in rows and columns on the substrate surface.

The present invention is to provide a large organic electroluminescent device of the top emission with uniform brightness over the entire area of the radiating surface, which provides stable characteristics over a lifetime and can be done with little effort.

This problem is solved organic electroluminescent device with a set of layers for emitting light at least partially through what about the transparent upper electrode, containing a conductive foil containing the base material with the upper and lower sides of the substrate and the first metal layer with such a thickness, in order to have a surface resistance of less than 0.05 Ohm/square on the upper side of materal base, the latter contains at least the first metal region as the lower electrode, a package of organic layers deposited on top of the bottom electrode intended for light emission, a transparent upper electrode on the upper part of the package of the organic layers and at least partially transparent protective element covering at least upper electrode and a set of organic layers. The term "service layer" means a sequence of different layers. Therefore, the term "package organic layer" means a sequence of different organic layers. This conductive foil provides a relatively low resistance electrical connection through the first metal layer and at the same time acts as an electrode in an organic electroluminescent device, to a much lower voltage drop, at least along the lower electrode. Uniform brightness can be achieved for organic electroluminescent devices with a large area, for example, square radiant the second surface of the order of several tens of squares of 10 cm×10 cm and more this substantially reduced voltage drop. Low surface resistance can be achieved, for example, when there is a sufficiently thick metal layers and/or highly conductive materials such as gold, silver or copper. Parts of the conductive foil can be manufactured separately from the rest of the set of layers of the organic electroluminescent device of simple and cheap ways of connecting, for example, a bonding metal layer on the upper part of the base material, in contrast to the costly methods of thin film deposition, used in prior art organic electroluminescent device. Material-the base may be of any material suitable for the manufacture of layers of the metallic base thickness of several tens of microns or more, for example, glass or polyimide film. The protective element means any defense of the organic layer from exposure to the environment, in order to obtain a sufficient service life of the devices. Protective elements may be chemically inert layers or hard caps around sensitive to environmental influences of organic electroluminescent devices.

In one embodiment, the first metal layer further comprises conducting diffuse the config barrier layer at an interface with a set of organic layers. Diffusion of the electrode material in the organic material leads to an increased level of impurities that violate properties of organic material. Such a diffusion barrier to reduce or prevent the deterioration of the emitting properties of the set of organic layers and, consequently, will increase the service life of the organic electroluminescent device.

In one embodiment, the transparent upper electrode is made of indium oxide-tin (ITO). ITO is electrically conductive and transparent material. Besides having the required electrical properties, the upper electrode simultaneously acts as a barrier layer to protect a set of organic layers from exposure to the environment. However, even transparent ITO layers absorb some amount of light, which imposes limitations on the thickness of the ITO layer. In an alternative embodiment, the transparent top electrode has a thickness less than 20 nm and contains the upper metal layer and the electron injection layer at the interface with a set of organic layers. Even such thin metal layers have a lower surface resistance than ITO layers. In addition, the manufacture of metal layers is easier than, for example, of ITO layers. On the other hand, the required transparency limits the thickness of the upper electrode to the values nige nm, which inevitably leads to additional efforts to protect the set of organic layers from exposure to the environment.

In another embodiment, the first metal layer further comprises a second metal region, which is electrically isolated from the first metal region and is designed to provide direct electrical contact with the transparent top electrode. Here, a direct electrical contact means the contact without any intervening organic layer between the second metal region and the upper electrode. This can be achieved by conventional means masking during deposition set of organic layers and the top electrode. The connection of the upper electrode with low resistance conductive material allows to distribute the exciting current of the organic electroluminescent devices near the light-emitting surface (set (package) organic layers) almost without ohmic losses, resulting in the length of the path of current flow through a material with a higher resistance (upper electrode) is reduced. Therefore, the second metal region acts as a shunt and provides a lower total resistance for applying current to the upper electrode. This results in further improving the uniformity of brightness of the organic electrolus ascentage device.

The uniformity can be improved even more if the layers of the set of layers are placed into smaller fragments to form a light-emitting portions which are separated from each non-emitting surfaces, to provide a conductive metal conductors to each fragment. Here is placed the fragments can be correct or incorrect form. Light-emitting fragment means a separate part (fragment) of the organic electroluminescent device containing a separate set of layers, capable of emission of light. The total surface area of the light emission organic electroluminescent device is the sum of the squares of the fragments. Non-emitting surfaces are surfaces, or where there is no light-emitting organic material or organic layer is not applied no stimulating voltage. For example, non-emitting surface may contain a conductive material for the current distribution across the widest part of the organic electroluminescent device almost without ohmic losses. Therefore, non-emitting surfaces are essentially well-conductive metal conductors with surface resistance is lower than 0.05 Ohm/square and act as shunts to the lower and/or upper electrode to provide more than the izkuyu total resistance, resulting in uniform brightness over the entire area of the light-emitting surface.

In another embodiment, the first and second metal region of the first metal layer are separated by an insulating filler. The insulating filler is used for leveling the surface of the layer set. Such a surface alignment avoids damage layer within the following layers that must be performed on an existing set of layers, due to the presence of edges/of the curvature of some of the underlying layers. The filler is located between the first and second metal regions, and therefore should be insulated, such as a standard resin. The insulating filler between the conductive materials additionally minimizes the risk of breakdowns or critical leakage currents flowing directly from one electrode to the other. The term "separated" here means between the first and second metal regions to be deposited upper electrode and a set of organic layers, will not exist the path of the current.

In another embodiment, a conductive foil further comprises a second metal layer thickness, resulting in a surface resistance of less than 0.05 Ohm/square on the bottom side of the base material, and p is at least a path of current flow through the base material for connecting the second metal layer with the first or with the second metal region of the first metal layer on the upper side of the base material. The electrical connection of the upper electrode to the power source through the second metal layer can be made easier, especially if the smaller fragments by additionally used the reverse side of the base material for supplying a current (second metal layer) and contacting the first or second metal region of the first metal layer directly over the base material. In other embodiments, the implementation can be added an additional amount of metal layers. These embodiments of three or more metal layers can be used for targeting areas, for example, by using different colors or address areas in the multiplexing mode, as is usually done in a passive (matrix) liquid crystal (segmented) displays.

In another embodiment, a conductive foil is flexible conductive foil containing a flexible material base. Such a conductive foil provides an organic electroluminescent device that combines uniform brightness with the advantage of g is bago light source and provides the possibility of applying the present invention additionally in areas where required or desired non-planar, and, for example, curved or flexible light sources.

In another embodiment, the protective element contains transparent, chemically inert layer covering at least a transparent top electrode and a set of organic layers. Transparent, chemically inert layer will maintain the flexibility of the flexible conductive foil, while providing an organic electroluminescent device with a long service life.

In another embodiment, at least the first metal layer includes copper. Copper is a very good conductive material. Copper may be subject to additional coatings, such as gold and silver coating. These coatings can also provide a smooth surface for deposition of the set of remaining layers over the copper layer. A smooth surface will prevent failures layer caused by surface roughness, leading to the leakage current from the lower to the upper electrode through a set of organic layers. Such coatings can be applied to copper, for example, by galvanic method.

In the present description and the claims, the word "comprising" does not exclude other elements or steps, and the indefinite article "a" or "an" does not exclude the plural. Any signs of references in the formula invented the I shall not be construed as limiting the scope of this invention formula.

Below, embodiments of the examples proposed organic electroluminescent device with reference to the accompanying drawings, without limiting the scope of the invention. In the drawings:

figure 1 is a side view of the first variant implementation of the organic electroluminescent device in accordance with the present invention,

figure 2 is a side view of an organic electroluminescent device in accordance with the present invention with a structured first metal layer,

figure 3 - side view of the organic electroluminescent device in accordance with the present invention with the second metal layer,

figure 4 is a top view of an organic electroluminescent device with slices in accordance with the present invention.

Figure 1 shows an example of the organic electroluminescent device of the top emission in accordance with the present invention with layers 1, 2, 3, and 5 for light radiation 4 at least partially through the transparent upper electrode 3 and at least partially through the transparent protective element 5. The lower electrode 12, the upper electrode 3 and the package 2 organic layers are covered with a protective element 5, in order to protect the package 2 organic layers from environmental influences and, thus, to achieve dostat knogo life.

Pack of 2 organic layers consists of one or more organic layers containing at least one layer, the emitting light 4 on the upper side of the organic electroluminescent device. In addition to the light-emitting layer, pack of 2 organic layers may include a layer of electron transport between the light-emitting layer and the cathode and/or the transport layer of holes between the light-emitting layer and the anode. Pack of 2 organic layers may also contain more than one light-emitting layers, each of which emits light of different emission spectrum. The organic layers are usually provided by vacuum deposition, for example, sputtering in the case of small organic molecules, or by centrifugation in the case of large molecules. The typical thickness of a set of organic layers is between 50 nm and 500 nm. One example of a package 2 organic layers is AlQ3(a layer for transporting holes)/ α-NPD (light emitting layer)/m-MTDATA with doping F4-TCNQ (layer transporting electrons). Specialists in the art can use other organic materials disclosed in the prior art.

Organic electroluminescent device in accordance with the present invention, is shown in figure 1, contains a conductive foil 1 with the material of the base 11, with the top and bottom sides of the substrate and the first metal layer 12 with a thickness resulting in surface resistance of less than 0.05 Ohm/square on the top side of the flexible of the base material 11, the latter contains at least the first metal region as the lower electrode. In the example shown in figure 1, the first metal layer identical with the first metal region. Material-based 11 may be rigid or flexible, depending on the application of this organic electroluminescent device, for example, glass or plastic. If the material is the basis of 11 flexible organic electroluminescent device will show an additional property of the flexible light source. Organic electroluminescent device with an area of the lower electrode and an area of light emitting surface 1 m2demands to provide exciting current is 20 A, to create a brightness of 1000 CD/m2when the conversion factor of 50 CD/A. When the surface resistance of 0.05 Ω/square, on the lower electrode, the maximum voltage drop is 0.5 C. is Acceptable voltage drop to 0.7 Century

For example, single-sided flexible conductive foil commercially available, for example, from Nippon Mektron Ltd and contains polyimide film with a thickness of 25 μm and a copper layer thickness of 35 μm, coupled glue with a polyimide film. Also available doctoron what I foil of polyimide film with copper foil on both sides. The first metal layers with a thickness of 35 μm have a surface resistivity significantly below 0.01 Ohm/square, in the case of copper is approximately 0.001 Ohm/square. In other embodiments, implementation, other metals with good properties of adhesion to flexible substrates, for example, silver or gold, and copper coated with gold or silver, also have very low surface resistance and is suitable as a low-resistance material for the lower electrode. Polyimide film acts as a material-based 11. As for solid materials-fundamentals, it's very similar resistance values are obtained for the metal layers of similar thickness.

The first metal layer 12 may further comprise a conductive layer 13 of the diffusion barrier on the surface of the partition with service pack 2 organic layers. Diffusion of the electrode material in the organic material leads to an increased level of impurities that violate properties of organic material. For example, the copper shows a relatively high diffusion coefficient. The respective conductive layers diffuse barrier thickness of a few nanometers composed of a noble metal type gold.

A transparent upper electrode 3 in the upper part of set of 2 organic layers may contain a transparent conductive material of the type ITO or metal. In the latter case, the thickness of the metal layer of limited thickness, when the metal layer remains at least partially transparent in the visible range of the spectrum. Layers of ITO is typically deposited by sputtering an additional protective layer between the electrode 3 of ITO and a set of 2 organic layers required to avoid damage during deposition of the organic layers. An example of a suitable material for such a protective layer is a thin film of copper phthalocyanine (CuPc). The thickness of the ITO layer can be much larger than the thickness of the metal electrode. However, if ITO is used as the upper electrode 3, on optimization of electrical parameters ITO adversely affect the optical requirements and restrictions on the temperature of the deposition process. Typical thickness of the electrodes of ITO is about 100 nm. One example of a metal upper electrode 3 is an aluminum layer with a thickness of less than 20 nm together with a layer of, for example, LiF, at the interface with service pack 2 organic layers in order to reduce the work function of the upper electrode 3. In order to achieve good transparency of the upper electrode 3, the thickness should be even smaller, for example less than 10 nm. Another suitable material for the upper electrode 3 is silver in combination with layers of high-alloyed layers injection/electron transport.

Figure 1 is a protective element 5 covers not only igni electrode 12, but also the upper electrode 3 and the package 2 organic layers. The minimum requirement for the size of the protection element 5 should be closing package 2 organic layers and the upper electrode 3, to prevent the diffusion of critical gases, such as oxygen or water from the environment into the package 2 organic layers. Appropriate transparent material, acting as a diffusion barrier, known to experts in the art, for example, silicon nitride. Solid, at least partially transparent closing cover can be hung on the upper part of the upper side of the base material 11, as an alternative to the protective layer as a protective element 5, to provide a closed and sealed volume on a set of organic layers, which can vakuumirovaniya or be filled with a chemically inert gases or liquids.

Another variant of implementation of the present invention shown in figure 2. Here, the diffusion barrier layer 13, as shown in figure 1, not shown, but may be present. The metal layer 12 includes the first and second metal region 121 and 122, respectively, both with surface resistance in accordance with the present invention is less than 0.05 Ohm/square on the top side of the flexible of the base material 11. The upper flexible side of the base material 11 having aetsa party on which is deposited a package of 2 organic layers, the other side (lower side) can be considered as the rear side of the organic electroluminescent device. The separation of the first and second metal regions 121 and 122, respectively, can be achieved, for example, using photolithography and etching. The term "separation" here means that before the deposition of the package 2 organic layers and the upper electrode 3 there is no path of current flow between the first and second metal regions 121 and 122, respectively.

The second metal region 122 must be directly connected to the upper electrode 3, as shown in figure 2, if it should act as a shunt, providing a lower total resistance of the metal conductor of the upper electrode. To obtain good electrical contact between the two layers 3 and 122, it is necessary to avoid the presence of any organic material in the upper part of the second metal region 122. This can be achieved by appropriate means of masking during thin film deposition. A set of organic layers deposited on the first metal part 121 appropriate methods of thin film deposition, such as sputtering and/or by centrifugation. The corresponding metal finishing can apply the I to the first and second metal regions, to change the surface roughness, reflectance, and work function before settles a set of organic layers.

As shown in figure 2, the first and second metal region 121 and 122, respectively, can be electrically separated by an insulating filler 6, in order to avoid failures layers within layers, which should consistently be accommodated on an existing set of layers, caused by the edges/curves in some of the underlying layers, and to avoid leakage currents flowing directly from the first metal region 121 to the second metal region 122, or Vice versa. Without any additional protection measures such leakage currents can be switched, for example, the remaining metal material after the laser processing structure of the conductive foil to obtain the separated first and second metal regions. Appropriate material to reduce leakage currents is any standard resin. The insulating filler 6 is located below set of 2 organic layers that are visible in the direction of the radiation beam 4, so that the insulating filler 6 may be transparent or opaque. The presence of insulating filler 6 will increase the reliability of the device.

Another variant implementation is shown in figure 3. Unlike earlier drawings, a conductive foil 1 additionally contains the second metal layer 14 on the bottom side of the base material 11 with a surface resistance, in accordance with the present invention, less than 0.05 Ohm/square, and the second metal layer 14 is connected with the second metal region 122 on the upper side of the base material 11 through at least one conductor 15, passing through the base material 11. Thus, the current supply to the upper electrode 3 is provided through the rear side of the organic electroluminescent device. On the one hand, makes contact with the upper electrodes 3 in the case of organic electroluminescent devices are complex structures with many fragments and, on the other hand, this reduces the surface area required for non-emitting surfaces on the upper side of the base material 11. On the upper side of the second metal layer 14 for the purpose of electrical insulation may be non-conductive layer 16. Very similar variants of implementation is also possible without the presence of the insulating filler 6 and/or diffusion barrier layer, not shown in figure 3. The third metal layer 14 provides additional protection against moisture penetration from the bottom side of the base material in an organic electroluminescent device.

In other embodiments of the second metal layer 14 may alternatively be in contact with the first metal region 121. In this case, the WTO is flanged metal region 122 is electrically isolated from the second metal layer 14 and contacts through the upper side of the base material 11 with a power source, not shown here.

Figure 4 shows a top view of an organic electroluminescent device with fragments containing the first metal region 121 and the second metal region 122 deposited on the upper side of the base material 11, separated by an insulating fillers 6 and 2 sets of organic layers on top. Layers 121, 122, 2, and 3 are built into smaller fragments in order to form a light-emitting fragments (for example here shows four fragments), which are separated from each other by non-emitting surfaces (areas where no package 2 organic layer is not present)to provide conductive metal conductors 121 and 122 that are appropriate to each fragment. Light-emitting fragment covers the local part (the smaller fragment) the organic electroluminescent device containing a set of layers of the organic electroluminescent device to emit light. The total area of the light-emitting surface of the organic electroluminescent device is equal to the sum of the squares of the fragments, which are here shown as black areas 2. In figure 4 the upper electrode 3 is given a somewhat smaller size, in order to be more clear layered structure. In the organic electroluminescent device with fragments of the upper electrode may also be of the same size is p, that and a set of organic layers. In addition, a fragment may consist of a variety of organic electroluminescent devices connected in series. In addition, the number and shape of the fragments may differ from the example shown in figure 4. The upper electrodes 3 cover pack of 2 organic light-emitting layers (black areas) and are electrically connected with the second metal layer 13.

Two organic electroluminescent devices have been successfully performed using flexible copper foil. In both examples, a copper layer (first metal layer) has a thickness of 35 μm and a resistance lower than 0.001 Ohms/square. The substrate size was 49×49 mm2on which were placed 16 fragments of size 20 mm2.

Example 1

Organic electroluminescent device package contains the following layers on top of the base material 11. As the diffusion barrier layer 13 in this example, we used the gold:

Cu (35 μm)/Au (1 μm)/PEDOT (100 nm)/α-NPD (15 nm)/α-NPD: Ruben (15 nm)/AlQ3(60 nm)/LiF (1 nm)/Al (10 nm)

Example 2

Organic electroluminescent device package contains the following layers on top of the base material 11. As the diffusion barrier layer 13 in this example uses silver:

Cu (35 μm)/Ag (1 μm)/PEDOT (100 nm)/α-NPD (15 nm)/α-NPD: Ruben (15 nm)/AlQ3(60 nm)/LiF(1 nm)/Al (10 nm)

PEDOT was used to overcome the incompatibility of the work function of the silver or gold layer to transport holes of α-NPD. Rubin is the alloying material and the actual fluorescent material in this set. Uniform brightness was observed over the entire area of the light-emitting surface of all segments in both examples, without any difference.

Embodiments of explained with reference to the drawings and the description merely represent examples of organic electroluminescent device and should not be construed as limiting the patent claims relating to these examples. Alternative embodiments of which are likewise covered by the protection scope of the patent claims, it is also possible for those who are experts in this field of technology. The numbering of the dependent claims does not imply that other combinations of formulas of the application can not also be advantageous embodiments of the invention.

1. Organic electroluminescent device with service layers (1, 2, 3) for emitting light (4) via at least partially transparent top electrode (3), containing
a conductive foil (1)containing the base material (11) with the upper and lower sides of the substrate and the first metal layer (12) so the thickness, in the result, the surface resistance had a value of less than 0.05 Ohm/square on the upper side of the base material (11), the latter contains at least the first metal region (121) as the lower electrode and the second metal region (122), which is electrically isolated from the first metal region (121) and is arranged to provide direct electrical contact with the transparent top electrode (3),
package (2) organic layers deposited on the upper part of the lower electrode (11) and designed to emit light (4),
transparent top electrode (3) on the top of the package (2) organic layers, and
at least partially transparent protective element (5)that covers at least the upper electrode (3) and (2) organic layers.

2. Organic electroluminescent device according to claim 1, characterized in that the first metal layer (12) further comprises a conductive layer (13) of the diffusion barrier on the border with the package (2) organic layers.

3. Organic electroluminescent device according to claim 1, characterized in that the transparent top electrode (3) is made of indium oxide-tin.

4. Organic electroluminescent device according to claim 1, characterized in that the transparent top electrode (3) has a thickness less than 20 nm and contains the top of the third metal layer and a layer of injection of electrons on the boundary of the set (2) organic layers.

5. Organic electroluminescent device according to claim 1, characterized in that the layers in the set of layers (1, 2, 3) are placed in small fragments to form a light-emitting fragments, which are separated from each other by non-emitting surfaces, to provide a conductive metal conductors to each fragment.

6. Organic electroluminescent device according to claim 1 or 5, characterized in that the first metal region (121) and the second metal region (122) of the first metal layer (12) separated by an insulating filler (6).

7. Organic electroluminescent device according to claim 1 or 6, characterized in that the conductive foil (1) additionally contains
the second metal layer (14) with such a thickness that the surface resistance had a value of less than 0.05 Ohm/square on the bottom side of the base material (11), and
at least one path (15) passing current through the base material (11)to connect the second metal layer (14) or with the first metal region (121), or with the second metal region (122) of the first metal layer (12) on the upper side of the base material (11).

8. Organic electroluminescent device according to claim 1 or 7, characterized in that the conductive foil (1) is a flexible conductive foil containing a flexible material base (11).

9. Organic electroluminescent device according to claim 1 or 8, characterized in that the protective element (5) comprises a transparent, chemically inert layer covering at least a transparent top electrode (3) and (2) organic layers.

10. Organic electroluminescent device according to any one of claims 1 or 9, characterized in that at least the first metal layer (12) contains copper.



 

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6 cl, 2 dwg, 2 ex, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention relates to new chemical compounds, particularly to complexes of scandium with heterocyclic ligands tris[2-(1,3-benzox(ti/imid)azol-2-yl)phenolate-O,N]scandium of general formula , where X - is oxygen, or sulphur, or NH, which can be used as an electroluminescent (emission) layer in organic light-emitting diodes (OLED). Invented also is an organic light-emitting diode, in which the emission layer is made from tris[2-(1,3-benzoxazol-2-yl)phenolate-O,N]scandium.

EFFECT: obtaining new chemical compounds which can be used as electroluminescent (emission) layer in organic light-emitting diodes (OLED).

6 cl, 3 ex

FIELD: physics.

SUBSTANCE: in receiver of optical radiation comprising at least one heterostructure located on transparent substrate and enclosed between two light-transmitting anode and cathode electrodes and consisting of two layers of organic semi-conducting materials with different width of prohibited zone, layers of heterostructure are made of materials with maximums of absorption spectrums located in area λ≤450 nm and high light transmission in visible area of spectrum, at that light transmission of incident flux of radiation from receiver of optical radiation in visible area of spectrum makes at least 30%.

EFFECT: creation of optical radiation receiver transparent in visible area of spectrum.

3 cl, 5 dwg

FIELD: physics.

SUBSTANCE: organic light-emitting diode contains the bearing bottom executed in the form of glass or plastic layer with the anode transparent layer disposed on it. The layer of organic substance with hole conductivity (the hole-transport layer) is located on the anode, then the organic radiating (emission) layer, organic layer with n-type conduction (an electro-transport layer) follow. The emission layer can simultaneously carry out function of an electro-transport stratum. Over organic layers the cathode stratum is located. The cathode is executed from the composite material containing ytterbium, doped by thulium or europium in amount of not less than 10%. The device is characterised by high technical characteristics: the insert voltage makes 4 V, a running voltage at luminosity 150 cd/m2, that there corresponds to quantity of the working monitor, 4 V, efficiency of a luminescence - 2 lm/W. At the mentioned running voltage luminosity slope on 10% makes not less than 4000 hours.

EFFECT: expansion of a circle of substances for emission layer, capable to generate all basic and intermediate colours.

4 cl, 1 tbl, 1 dwg

FIELD: chemistry.

SUBSTANCE: there is disclosed method of injector polyaniline coating on the surface of transparent conductive oxide or metal layer on transparent substrate for the polymer electroluminescent diode, characterised that polyaniline coating is ensured with electrochemical synthesis of polyaniline from aniline solution being in contact with transparent conductive oxide or metal layer. Invention prevents softening ensured by prevented current spreading along the polyaniline layer, as well as by simplified procedure of polyaniline coating; homogeneous coating of easily controlled thickness; polyaniline coating of high continuity without through holes; with required pixel array addressing without additional polymer layers of reduced conductivity.

EFFECT: simplified and cheap making polymeric electroluminescent diodes.

10 cl, 2 dwg

FIELD: organic semiconductors.

SUBSTANCE: embossing or laminating film has at least one circuit component manufactured by using organic semiconductor technology, for instance one or more organic field-effect transistors; circuit component has several layers including electric functional layers with at least one organic semiconductor layer, at least one insulating layer, and electricity conductive layers. One or more layers of circuit component are made by way of thermal or ultraviolet replication including spatial structuring, part of at least one electric functional layer in spatial structuring region being fully separated.

EFFECT: improved circuit component production process using organic semiconductor technology.

28 cl, 9 dwg

FIELD: organic chemistry, chemical technology.

SUBSTANCE: invention relates to novel derivatives of fullerenes comprising organic amines and hydrogen atoms bound to fullerene-C60 molecule by 6,6-double bonds of the general formula: C60Hn(R1R2N)n wherein R1 means -C6H5CH2; R2 means -C6H5CH2; n = 4 (tetra-(dibenzylaminohydro)[60]fullerene); R1 means -C5H9; R2 means hydrogen atom (H); n = 3 (tri-(cyclopentylaminohydro)[60]fullerene). Also, invention relates to using derivatives of fullerenes, in particular, (tetra-(benzylaminohydro)[60]fullerene, (tetra-(dibenzylaminohydro)[60]fullerene, tri-(cyclopentylaminohydro)[60]fullerene, 2-(azahomo[60]fullereno)-5-nitropyrimidine, 1,3-dipropyl-5-[5'-(azahomo[60]fullereno)pentyl]-1,3,5-triazin-2,4,6(1H,3H,5H)-trione, O,O-dibutyl-(azahomo[60]fullereno)phosphate as acceptors of electrons in composites polymer/fullerene designated for photovoltaic cells. Also, invention relates to photovoltaic device comprising mixture of poly-conjugated polymer and abovementioned fullerene derivative or their mixture as an active layer. Also, invention relates to a method for synthesis of derivatives of fullerenes comprising aromatic amines and hydrogen atoms bound to fullerene-C60 molecule by 6,6-double bonds. Method involves interaction of C60 with the corresponding organic amine in solution, and this reaction is carried out in aromatic solvent medium in amine excess at temperature 25-70°C for 2-5 days followed by evaporation of solution and precipitation of the end product by addition of alcohol.

EFFECT: improved method of synthesis.

6 cl, 1 tbl, 2 dwg, 6 ex

FIELD: organic semiconductors.

SUBSTANCE: embossing or laminating film has at least one circuit component manufactured by using organic semiconductor technology, for instance one or more organic field-effect transistors; circuit component has several layers including electric functional layers with at least one organic semiconductor layer, at least one insulating layer, and electricity conductive layers. One or more layers of circuit component are made by way of thermal or ultraviolet replication including spatial structuring, part of at least one electric functional layer in spatial structuring region being fully separated.

EFFECT: improved circuit component production process using organic semiconductor technology.

28 cl, 9 dwg

FIELD: chemistry.

SUBSTANCE: there is disclosed method of injector polyaniline coating on the surface of transparent conductive oxide or metal layer on transparent substrate for the polymer electroluminescent diode, characterised that polyaniline coating is ensured with electrochemical synthesis of polyaniline from aniline solution being in contact with transparent conductive oxide or metal layer. Invention prevents softening ensured by prevented current spreading along the polyaniline layer, as well as by simplified procedure of polyaniline coating; homogeneous coating of easily controlled thickness; polyaniline coating of high continuity without through holes; with required pixel array addressing without additional polymer layers of reduced conductivity.

EFFECT: simplified and cheap making polymeric electroluminescent diodes.

10 cl, 2 dwg

FIELD: physics.

SUBSTANCE: organic light-emitting diode contains the bearing bottom executed in the form of glass or plastic layer with the anode transparent layer disposed on it. The layer of organic substance with hole conductivity (the hole-transport layer) is located on the anode, then the organic radiating (emission) layer, organic layer with n-type conduction (an electro-transport layer) follow. The emission layer can simultaneously carry out function of an electro-transport stratum. Over organic layers the cathode stratum is located. The cathode is executed from the composite material containing ytterbium, doped by thulium or europium in amount of not less than 10%. The device is characterised by high technical characteristics: the insert voltage makes 4 V, a running voltage at luminosity 150 cd/m2, that there corresponds to quantity of the working monitor, 4 V, efficiency of a luminescence - 2 lm/W. At the mentioned running voltage luminosity slope on 10% makes not less than 4000 hours.

EFFECT: expansion of a circle of substances for emission layer, capable to generate all basic and intermediate colours.

4 cl, 1 tbl, 1 dwg

FIELD: physics.

SUBSTANCE: in receiver of optical radiation comprising at least one heterostructure located on transparent substrate and enclosed between two light-transmitting anode and cathode electrodes and consisting of two layers of organic semi-conducting materials with different width of prohibited zone, layers of heterostructure are made of materials with maximums of absorption spectrums located in area λ≤450 nm and high light transmission in visible area of spectrum, at that light transmission of incident flux of radiation from receiver of optical radiation in visible area of spectrum makes at least 30%.

EFFECT: creation of optical radiation receiver transparent in visible area of spectrum.

3 cl, 5 dwg

FIELD: chemistry.

SUBSTANCE: invention relates to new chemical compounds, particularly to complexes of scandium with heterocyclic ligands tris[2-(1,3-benzox(ti/imid)azol-2-yl)phenolate-O,N]scandium of general formula , where X - is oxygen, or sulphur, or NH, which can be used as an electroluminescent (emission) layer in organic light-emitting diodes (OLED). Invented also is an organic light-emitting diode, in which the emission layer is made from tris[2-(1,3-benzoxazol-2-yl)phenolate-O,N]scandium.

EFFECT: obtaining new chemical compounds which can be used as electroluminescent (emission) layer in organic light-emitting diodes (OLED).

6 cl, 3 ex

FIELD: physics; optics.

SUBSTANCE: invention relates to organic displays. The organic electroluminescent display has an organic electroluminescent device which has first and second display electrodes and at least one organic functional layer between the display electrodes and consisting of an organic compound; a base for holding the organic electroluminescent device; a film of a high-molecular compound which covers the organic electroluminescent device and the surface of the base along the perimetre of the organic electroluminescent device; and in inorganic barrier film which covers the high-molecular compound film, edges of the high-molecular compound film and the surface of the base along the perimetre of the high-molecular compound film; the high-molecular compound film used is a film made from aliphatic polyurea.

EFFECT: design of an organic electroluminescent display which is not dyed and is shock resistant.

6 cl, 2 dwg, 2 ex, 2 tbl

FIELD: chemistry.

SUBSTANCE: invention can be used in manufacturing organic light-emitting diodes, liquid-crystal displays, plasma display panel, thin-film solar cell and other electronic and semi-conductor devices. Claimed is element, including target of ionic dispersion, where said target includes processed MoO2 plate of high purity. Method of such plate manufacturing includes isostatic pressing of component consisting of more than 99% of stoichiometric MoO2 powder into workpiece, sintering of said workpiece under conditions of supporting more than 99% of MoO2 stoichiometry and formation of plate which includes more than 99% of stoichiometric MoO2. In other version of said plate manufacturing component, consisting of powder, which contains more than 99% of stoichiometric MoO2, is processed under conditions of hot pressing with formation of plate. Method of thin film manufacturing includes stages of sputtering of plate, which contains more than 99% of stoichiometric MoO2, removal of MoO2 molecules from plate and application of MoO2 molecules on substrate. Also claimed is MoO2 powder and method of said plate sputtering with application of magnetron sputtering, pulse laser sputtering, ionic-beam sputtering, triode sputtering and their combination.

EFFECT: invention allows to increase work of output of electron of ionic sputtering target material in organic light-emitting diodes.

16 cl, 5 ex

FIELD: chemistry.

SUBSTANCE: invention relates to macromolecular compounds with a nucleus-shell structure. The invention discloses macromolecular compounds with a nucleus-shell structure, whereby the nucleus has a macromolecular dendritic and hyperbranched structure based on carbon or based on silicon and carbon is bonded to at least three, in particular at least six external atoms through a carbon-based coupling chain (V) which is selected from a group consisting of straight and branched alkylene chains with 2-20 carbon atoms, straight or branched polyoxyalkylene chains, straight or branched siloxane chains or straight or branched carbosilane chains, with straight chains based on carbon oligomeric chains (L) with conjugated double bonds on the entire length. Conjugated chains (L) in each separate case are bonded at the end opposite the coupling chain (V) to one more, specifically, aliphatic, arylaliphatic or oxyaliphatic chain (R) without conjugated double bonds. The chains (V), (L) and (R) form the shell. The invention also discloses a method for synthesis of the said compounds.

EFFECT: novel organic compounds which can be synthesised using conventional solvents and have good semiconductor properties.

16 cl, 2 ex

FIELD: physics.

SUBSTANCE: invention relates to multilayer organic light-emitting diodes (OLED) and can be used in designing alternative sources of light and new-generation displays and making a light-emitting diode which operates for a long period of time. The invention discloses an OLED consisting of a transparent electrode, a light-emitting layer and a metal electrode. A protective silver layer is sprayed onto the surface of the metal electrode and in the lower part of the housing there are capsules containing water, oxygen and impurity active absorbers.

EFFECT: design of an OLED which enables to make thin-film panel light sources and full-format displays which retain brightness, contrast and working capacity in a long period of time.

5 cl, 1 tbl, 2 dwg

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