CN101540375A - Organic electroluminescence device - Google Patents
Organic electroluminescence device Download PDFInfo
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- CN101540375A CN101540375A CN200910081139A CN200910081139A CN101540375A CN 101540375 A CN101540375 A CN 101540375A CN 200910081139 A CN200910081139 A CN 200910081139A CN 200910081139 A CN200910081139 A CN 200910081139A CN 101540375 A CN101540375 A CN 101540375A
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Abstract
The invention relates to an organic electroluminescence device with the new structure, which comprises a first electrode, a second electrode, an organic layer positioned between the two electrodes and comprising a luminous layer. The device is characterized in that the luminous layer at least comprises a benzanthracene derivative selected from the general expression such as right; wherein X and Y are separately selected from cyclization aromatic groups of four to twenty atomic carbon atoms or replaced cyclization aromatic groups of four to twenty atomic carbon atoms; A1, A2, A3 and A4 are separately selected from hydrogen atoms, ethylene, aromatic amino, carbazyl or aromatic heterocyclic radical and are selected from the hydrogen atoms at different times. The device uses the benzanthracene derivative as luminescent dye, thus being capable of obtaining devices with high brightness, high efficiency and excellent emitting colors.
Description
Technical field:
The present invention relates to a kind of organic electroluminescence device (OLED), specifically is the electroluminescent device that adopts specific luminous material of main part.
Background technology:
A series of advantages such as display of organic electroluminescence has from main light emission, low-voltage DC driven, solidifies entirely, the visual angle is wide, in light weight, composition and technology are simple, compare with LCD, display of organic electroluminescence does not need backlight, the visual angle is big, power is low, and its response speed can reach 1000 times of LCD, and its manufacturing cost but is lower than the LCD of equal resolution, therefore, display of organic electroluminescence has broad application prospects.
The general structure of organic electroluminescence device comprises successively: matrix, anode, organic layer, negative electrode, organic function layer comprises emission layer (EML) again, can also comprise hole injection layer (HIL) and/or hole transmission layer (HTL) between anode and emission layer, and electron transfer layer between emission layer and negative electrode (ETL) and/or electron injecting layer (EIL), can also comprise hole blocking layer (HBL) between emission layer and electron transfer layer etc.
2002, Appl.Phys.Lett., 80,3201 (2002), the blue light material ADN doping TBP that Shi Jianmin and doctor Deng Qingyun use Kodak has for the first time obtained more stable blue-light device, and chromaticity coordinates is (0.15,0.23).But the film morphology rather unstable of material of main part ADN, crystallization easily, photochromic also green partially (0.20,0.26) of ADN self.Therefore, occurred improved derivative blue light material afterwards, but can not change still that the general efficient of blue light is low, the present situation of poor stability, be difficult to mate red, green, obtained the color screen that require today based on ADN.
The luminescent material benzanthracene derivative that the present invention adopts can obtain the strong material of transmission performance by the regulation and control of substituted radical, mates different photochromicly simultaneously, obtains high main body or the dyestuff of luminescent properties.
Summary of the invention:
The objective of the invention is to propose a kind of organic electroluminescence device of new structure.
The present invention proposes a kind of organic electroluminescence device, comprise first electrode, second electrode and the organic layer between these two electrodes, comprise luminescent layer in this organic layer, it is characterized in that comprising at least in the described luminescent layer and be selected from the following benzanthracene derivative of general formula:
In the general formula, X and Y are selected from the cyclization aromatic group of 4～20 nucleus carbon atoms or the replacement cyclization aromatic group of 4～20 nucleus carbon atoms, A respectively alone
1, A
2, A
3And A
4Be selected from hydrogen atom respectively alone, or independently be selected from the carbazyl of the aryl amine of the vinyl of 2～50 nucleus carbon atoms, 2～50 nucleus carbon atoms, 2～50 nucleus carbon atoms or the aromatic heterocyclic radical of 2～50 nucleus carbon atoms, and be not selected from hydrogen atom simultaneously.
In the above-mentioned benzanthracene derivative general formula: X and Y independently are selected from the group shown in the following general formula respectively:
A
1, A
2, A
3And A
4Independently be selected from hydrogen atom respectively or be selected from the group shown in the following general formula, and A
1, and A
2Be not selected from hydrogen atom, A simultaneously
3And A
4Be not selected from hydrogen atom simultaneously:
Above-mentioned R
1～R
4Represent hydrogen atom, have 1～20 nucleus carbon atom number alkane, have the aryl that 1～20 nucleus carbon atom is counted the alcoxyl hydrocarbon or had 6～20 nucleus carbon atom numbers.
Above-mentioned benzanthracene derivative is selected from the compound of at least a following concrete molecular structure:
Compound 1 compound 2
Compound 3 compounds 4
Compound 5 compounds 6
Compound 7 compounds 8
Compound 9 compounds 10
Compound 11 compounds 12
Compound 13 compounds 14
Compound 15 compounds 16
Compound 17 compounds 18
Compound 19 compounds 20
Compound 21 compounds 22
Compound 23 compounds 24
Compound 25 compounds 26
Compound 27 compounds 28
Compound 29 compounds 30
Compound 31 compounds 32
Compound 33 compounds 34
Compound 35 compounds 36
Compound 37 compounds 38
Compound 39 compounds 40.
Luminescent layer of the present invention comprises at least two kinds of organic materials, and benzanthracene derivative proportion in luminescent layer is 0.01%～100%.
The organic material that above-mentioned luminescent layer comprises is selected from aromatic condensed ring compounds, coumarin kind compound, quinacridone compound, aromatic radical anthracene compounds, compound of fluorene class, perylene compounds, two fragrant alkene class aryl compounds, metal organic complex, two pyran compounds, oxadiazole compounds, triazole compound, benzimidazoles compound, biphenyl compound.
The organic material that comprises in the above-mentioned luminescent layer is selected from hydroxyquinoline aluminum, oxyquinoline gallium, Al (Saph-q) or Ga (Saph-q), or be selected from 9,10-two (2-naphthyl) anthracene, 4,4 '-two (2, the 2-diphenylacetylene)-1,1 '-biphenyl, rubrene, N, N-dimethyl quinacridine, C545T, DCJTB, 4-methylene dicyanoethyl-2-(to the dimethylamino styryl)-6-methyl-4H-pyrans, four uncle Ding Ji perylenes.
The thickness of luminescent layer of the present invention is 10nm～200nm.The thickness of preferred luminescent layer is 30nm～120nm.
The present invention as luminescent dye, can access the device of high brightness, high efficiency, glow color excellence with the benzanthracene derivative.
Benzanthracene derivative of the present invention has carrier transmission performance preferably, possesses ambipolar transmittability, and as main body or single-shot photosphere, the charge carrier in can the balance light-emitting zone makes the charge carrier composite highly effective, thereby raises the efficiency.
Benzanthracene derivative of the present invention can be applied to the RGB color screen through suitable RGB match materials, promotes the performance of color screen.
Benzanthracene derivative of the present invention can also be applied in the white light parts, obtains highlighted, white-light illuminating product efficiently.
Embodiment:
Basic structure in the organic electroluminescence device that the present invention proposes comprises:
Transparent base can be glass or flexible substrate, and flexible substrate adopts a kind of material in polyesters, the polyimides compounds;
First electrode layer (anode layer), can adopt inorganic material or organic conductive polymer, inorganic material is generally the higher metals of work function such as metal oxides such as ITO, zinc oxide, zinc tin oxide or gold, copper, silver, the optimized ITO that is chosen as, organic conductive polymer are preferably a kind of material in polythiophene/polyvinylbenzenesulfonic acid sodium (hereinafter to be referred as PEDOT:PSS), the polyaniline (hereinafter to be referred as PANI);
The second electrode lay (cathode layer, metal level), the general alloy that adopts the lower metal of work functions such as lithium, magnesium, calcium, strontium, aluminium, indium or they and copper, gold, silver, or the electrode layer that alternately forms of metal and metal fluoride, the present invention is preferably Mg:Ag alloy-layer and Ag layer, Ag layer and lithium fluoride successively or lithium nitride layer, Al layer and lithium fluoride successively or lithium nitride layer successively.
Organic function layer comprises luminescent layer, can also comprise functional layers such as electron transfer layer, hole transmission layer.
Organic function layer can be single organic luminous layer, the benzanthracene analog derivative that adopts the present invention to propose in this layer.
Luminescent layer can also adopt other material, and is optional from small molecule material, also can adopt polymeric material.Micromolecule luminescent layer material can be fluorescent material, as metal organic complex (as Alq
3, Gaq
3, Al (Saph-q) or Ga (Saph-q)) compounds.
Can also comprise luminescent dye in the luminescent layer, dyestuff is generally a kind of material in aromatic condensed ring class (as rubrene), Coumarins (as DMQA, C545T) or two pyrans class (as DCJTB, the DCM) compound.
If comprise electron transfer layer in the organic function layer, materials used is generally the micromolecule electron transport material, can be metal organic complex (as Alq
3, Gaq
3, Al (Saph-q), BAlq or Ga (Saph-q)), aromatic condensed ring class (as pentacene, perylene) or o-phenanthroline class (as Bphen, BCP) compound.
If comprise hole transmission layer in the organic function layer, the material that uses is generally the low molecular material of the arylamine class and the branch polymer same clan, as N, N '-two-(1-naphthyl)-N, N '-diphenyl-1,1-xenyl-4,4-diamines (NPB), N, N '-diphenyl-N, N '-two (aminomethyl phenyl)-1,1 '-xenyl-4,4 '-diamines (TPD) etc.
To provide some embodiment below, specific explanations technical scheme of the present invention.Should be noted that the following examples only are used for helping to understand invention, rather than limitation of the present invention.
Embodiment 1:ITO/ compound 1 (50nm)/LiF/Al
With the ITO electro-conductive glass substrate of the good special pattern of etching as substrate, substrate is placed on the deionized water for ultrasonic ripple that contains cleaning fluid to be cleaned, the washing lotion temperature is about 60 ℃, the substrate that will clean with infrared roasting lamp is dried then, at first put into the preliminary treatment chamber ITO substrate is carried out the plasma preliminary treatment, put into evaporation chamber evaporation organic layer, cathode construction successively then, evaporate process middle chamber pressure is lower than 5.0 * 10
-3Pa.
In the present embodiment, the luminescent layer of organic layer evaporation 90nm thickness, material is a compound 1.
Evaporation 0.5nm lithium fluoride LiF is an electron injecting layer, covers 150nm metallic aluminium Al at last as negative electrode.
Embodiment 2:ITO/ compound 2 (90nm)/LiF/Al
Preparation is with embodiment 1.Luminescent layer changes the compound 2 of 90nm into.
Embodiment 3:ITO/ compound 3 (150nm)/LiF/Al
Preparation is with embodiment 1.Luminescent layer changes the compound 3 of 150nm into.
Embodiment 4:ITO/NPB (20nm)/compound 4 (70nm)/Alq
3(20nm)/LiF/Al
Preparation is with embodiment 1.Increased hole transmission layer NPB, 20nm; Electron transfer layer Alq
3, 20nm; Luminescent layer changes the compound 4 of 70nm into simultaneously.
Embodiment 5:ITO/NPB (40nm)/compound 5 (100nm)/LiF/Al
Preparation is with embodiment 4.Increased thickness of hole transport layer to 40nm; Removed electron transfer layer Alq
3Luminescent layer changes the compound 5 of 100nm into simultaneously.
Embodiment 6:ITO/ compound 6 (70nm)/BAlq (20nm)/LiF/Al
Preparation is with embodiment 4.Removed hole transmission layer NPB; Electron transfer layer changes the BAlq of 20nm into; Luminescent layer changes the compound 6 of 70nm into simultaneously.
Comparative Examples 1:ITO/NPB (50nm)/Alq
3(50nm)/LiF/Al
Be traditional bi-layer devices, preparation is with embodiment 1.Organic layer is the hole transport NPB of evaporation 50nm successively, the luminous and electric transmission Alq of 50nm
3
| Luminescent layer | Require voltage (V) | Brightness (cd/m 2) | Efficient (cd/A) | Chromaticity coordinates (x, y) | |
| Embodiment 1 | Compound 1 | 10 | 18753 | 7.21 | (0.33，0.62) |
| Embodiment 2 | Compound 2 | 10 | 20106 | 8.11 | (0.35，0.62) |
| Embodiment 3 | Compound 3 | 10 | 21582 | 8.37 | (0.34，0.65) |
| Embodiment 4 | NPB compound 4/Alq 3 | 10 | 19320 | 7.54 | (0.33，0.64) |
| Embodiment 5 | NPB/ compound 5 | 10 | 22101 | 8.89 | (0.34，0.65) |
| Embodiment 6 | Compound 6/BAlq | 10 | 20470 | 7.86 | (0.33，0.65) |
| Comparative Examples 1 | NPB/Alq 3 | 10 | 14539 | 3.96 | (0.34，0.60) |
Embodiment 1～3rd, separately as luminescent layer, the functional layer of transmission property such as hole and electronics is not set with benzanthracene derivative compound 1～compound 3.The benzanthracene compound has born also that hole and electronics inject, the effect of transmission except hole and electron recombination is luminous.Compare with traditional NPB, Alq3 bi-layer devices, the benzanthracene compound has showed excellent luminescent properties and double carriers transmission performance.Under the same drive voltage, the brightness of embodiment 1～3 is higher, about efficient substantially all is doubled than Comparative Examples 1.Glow color is green glow substantially.
And embodiment 4～6 has increased hole transmission layer or electron transfer layer, and device performance is also than more excellent.Wherein, the efficient of embodiment 5 compares ratio 1 and has improved 1.24 times, and amplification is obvious.Glow color is green glow substantially.
Above-mentioned benzanthracene compound is as luminescent layer, and brightness, efficient improve obviously, show extremely excellent luminescent properties.On the other hand, the benzanthracene compound also has excellent carrier transport ability, and conduction electron and hole simultaneously, makes that two kinds of electric charges in the device can mate, compound, luminous.
Embodiment 7:ITO/2-TNATA:F
4-TCNQ (100nm, 2%)/NPB (20nm)/compound 7:C545T (30nm, 1%)/Alq
3(20nm)/LiF/Al
With the ITO electro-conductive glass substrate of the good special pattern of etching as substrate, substrate is placed on the deionized water for ultrasonic ripple that contains cleaning fluid to be cleaned, the washing lotion temperature is about 60 ℃, the substrate that will clean with infrared roasting lamp is dried then, at first put into the preliminary treatment chamber ITO substrate is carried out the plasma preliminary treatment, put into evaporation chamber evaporation organic layer, cathode construction successively then, evaporate process middle chamber pressure is lower than 5.0 * 10
-3Pa.
In the present embodiment, organic layer is the hole injection layer 2-TNATA of evaporation 100nm thickness successively, with the F of 2% concentration
4-TCNQ is the p dopant; Deposit hole transmission layer NPB then thereon, thickness 20nm; Luminescent layer is the compound 7 of 30nm thickness, green glow dyestuff C545T, and concentration is 1%; On it again deposit thickness be the electron transfer layer Alq of 20nm
3
Evaporation 0.5nm lithium fluoride LiF is an electron injecting layer, covers 150nm metallic aluminium Al at last as negative electrode.
Embodiment 8:ITO/2-TNATA:F
4-TCNQ/NPB/ compound 8:TBP (40nm, 3%)/Alq
3(10nm)/LiF/Al
Preparation is with embodiment 7.Just light emitting layer thickness is 40nm, and main body is a compound 8, and the doping ratio of blue light dyestuff TBP is 3%; The electric transmission layer thickness is 10nm.
Embodiment 9:
ITO/2-TNATA:F
4-TCNQ/NPB/ compound 9:Rubrene (30nm, 2.5%)/Alq
3(20nm)/LiF/Al
Preparation is with embodiment 7.The luminescent layer main body is a compound 9, and the doping ratio of gold-tinted dyestuff Rubrene is 2.5%.
Embodiment 10:ITO/2-TNATA:F
4-TCNQ/NPB/ compound 10:Rubrene (30nm, 6:4): DCJTB[1%]/Alq
3(20nm)/LiF/Al
Preparation is with embodiment 7.Luminescent layer is two host compounds 10 and Rubrene, and the two ratio is 6: 4, and the luminescent layer gross thickness is 30nm, and the doping ratio of red dye DCJTB is 1%.
Comparative Examples 2:ITO/2-TNATA:F
4-TCNQ/NPB/Alq
3: C545T (30nm, 1%)/Alq
3/ LiF/Al
Preparation is with embodiment 7.Main body changes Alq into
3
Comparative Examples 3:ITO/2-TNATA:F
4-TCNQ/NPB/TBADN:TBP (40nm, 3%)/Alq
3(10nm)/LiF/Al
Preparation is with embodiment 8.Main body changes TBADN into.
Comparative Examples 4:
ITO/2-TNATA:F
4-TCNQ/NPB/Alq
3:Rubrene(30nm，2.5％)/Alq
3(20nm)/LiF/Al
Preparation is with embodiment 9.Main body changes Alq into
3
Comparative Examples 5:
ITO/2-TNATA:F
4-TCNQ/NPB/Alq
3:Rubrene(30nm，6:4):DCJTB[1％]/Alq
3(20nm)/LiF/Al
Preparation is with embodiment 10.Host compound 10 changes Alq into
3
| Luminescent layer | Require voltage (V) | Brightness (cd/m 2) | Efficient (cd/A) | Chromaticity coordinates (x, y) | |
| Embodiment 7 | Compound 7:C545T | 10 | 51200 | 13.54 | (0.33，0.65) |
| Embodiment 8 | Compound 8:TBP | 10 | 10909 | 3.58 | (0.13，0.17) |
| Embodiment 9 | Compound 9:Rubrene | 10 | 15320 | 5.02 | (0.50，0.49) |
| Embodiment 10 | Compound 10:Rubrene:DCJTB | 10 | 14392 | 5.36 | (0.65，0.35) |
| Comparative Examples 2 | Alq 3:C545T | 10 | 32510 | 9.88 | (0.34，0.65) |
| Comparative Examples 3 | TBADN:TBP | 10 | 8348 | 3.12 | (0.13，0.20) |
| Comparative Examples 4 | Alq 3:Rubrene | 10 | 10560 | 4.51 | (0.50，0.49) |
| Comparative Examples 5 | Alq 3:Rubrene:DCJTB | 10 | 9850 | 4.25 | (0.64，0.35) |
Embodiment 7～10 is benzanthracene derivative compound 7～compound 10 is born main body in luminescent layer effect, is applied to different colors respectively, contrasts with Comparative Examples 2～5.From the effect of implementing, the benzanthracene compound can be applicable to different luminescent dyes as material of main part, and versicolor performance all has raising in various degree.As, green glow, traditional relatively Alq
3Doping C545T, the brightness of device has improved near 60%, and efficient has improved more than 1/3rd.In addition, the performance aspect red, blue, yellow of benzanthracene derivative is also very excellent.The benzanthracene derivative host comes from material self bipolarity transmittability preferably on the one hand to the raising of performance, replaces by different groups on the other hand, can satisfy various photochromic energy level needs, so the benzanthracene compound can be used as luminous main body.
Embodiment 11:ITO/HAT (10nm)/NPB (40nm)/Alq
3: compound 11 (30nm, 1%)/Alq
3(20nm)/LiF/Al
Preparation is with embodiment 7.Organic layer is evaporation hole injection layer HAT successively, thickness 10nm; Hole transmission layer NPB, thickness 40nm; Light emitting layer thickness 30nm, main body is Alq
3, dyestuff is a compound 11, doping ratio is 1%; The Alq of electron transfer layer 20nm
3
Embodiment 12:
ITO/2-TNATA:F
4-TCNQ/NPB/PADN: compound 12 (30nm, 0.5%)/Alq
3(20nm)/LiF/Al
Preparation is with embodiment 7.Light emitting layer thickness is 30nm, and main body is PADN, dye composition 12 doping ratios 0.5%.
Comparative Examples 2; ITO/2-TNATA:F
4-TCNQ/NPB/Alq
3: C545T (30nm, 1%)/Alq
3/ LiF/Al
Comparative Examples 6:ITO/2-TNATA:F
4-TCNQ/NPB/PADN:TBP (30nm, 1.5%)/Alq
3/ LiF/Al
Preparation is with embodiment 7.Light emitting layer thickness 30nm, main body PADN, dyestuff TBP doping ratio 1.5%.
| Luminescent layer | Require voltage (V) | Brightness (ed/m 2) | Efficient (cd/A) | Chromaticity coordinates (x, y) | |
| Embodiment 11 | HT01: compound 11 | 10 | 41057 | 12.59 | (0.33，0.65) |
| Embodiment 12 | PADN: compound 12 | 10 | 11090 | 5.76 | (0.13，0.16) |
| Comparative Examples 2 | Alq 3:C545T | 10 | 32510 | 9.88 | (0.34，0.65) |
| Comparative Examples 6 | PADN:TBP | 10 | 9534 | 4.11 | (0.15，0.20) |
Embodiment 11 and 12 is used as green glow, blue light dyestuff with benzanthracene derivative compound 11 and compound 12, and the device for preparing still has luminescent properties preferably.Embodiment 11 green device, efficient are near 12.6cd/A, and chromaticity coordinates is for green preferably, and brightness and efficient are all than Alq
3Improve a lot.Equally, embodiment 12 is a blue-light device, and chromaticity coordinates has certain improvement, and brightness and efficient have improved about 30%.The benzanthracene compound promptly has higher luminescent properties as the single-shot photosphere, and its transmission and luminous all good is described, by different substituted radicals, can regulate and control its glow color, and using becomes dyestuff, can access the device of excellent performance.
Claims (8)
1, a kind of organic electroluminescence device comprises first electrode, second electrode and the organic layer between these two electrodes, comprises luminescent layer in this organic layer, it is characterized in that comprising at least in the described luminescent layer being selected from the following benzanthracene derivative of general formula:
In the general formula, X and Y are selected from the cyclization aromatic group of 4～20 nucleus carbon atoms or the replacement cyclization aromatic group of 4～20 nucleus carbon atoms, A respectively alone
1, A
2, A
3And A
4Be selected from hydrogen atom respectively alone, or independently be selected from the carbazyl of the aryl amine of the vinyl of 2～50 nucleus carbon atoms, 2～50 nucleus carbon atoms, 2～50 nucleus carbon atoms or the aromatic heterocyclic radical of 2～50 nucleus carbon atoms, and be not selected from hydrogen atom simultaneously.
2, organic electroluminescence device according to claim 1, it is characterized in that in the described benzanthracene derivative general formula: X and Y independently are selected from the group shown in the following general formula respectively:
A
1, A
2, A
3And A
4Independently be selected from hydrogen atom respectively or be selected from the group shown in the following general formula, and A
1, and A
2Be not selected from hydrogen atom, A simultaneously
3And A
4Be not selected from hydrogen atom simultaneously:
Above-mentioned R
1～R
4Represent hydrogen atom, have 1～20 nucleus carbon atom number alkane, have the aryl that 1～20 nucleus carbon atom is counted the alcoxyl hydrocarbon or had 6～20 nucleus carbon atom numbers.
3, device according to claim 1 and 2 is characterized in that, described benzanthracene derivative is selected from the compound of at least a following concrete molecular structure:
Compound 1 compound 2
Compound 3 compounds 4
Compound 5 compounds 6
Compound 7 compounds 8
Compound 9 compounds 10
Compound 11 compounds 12
Compound 13 compounds 14
Compound 15 compounds 16
Compound 17 compounds 18
Compound 19 compounds 20
Compound 21 compounds 22
Compound 23 compounds 24
Compound 25 compounds 26
Compound 27 compounds 28
Compound 29 compounds 30
Compound 31 compounds 32
Compound 33 compounds 34
Compound 35 compounds 36
Compound 37 compounds 38
Compound 39 compounds 40.
4, device according to claim 1 is characterized in that, described luminescent layer comprises at least two kinds of organic materials, and benzanthracene derivative proportion in luminescent layer is 0.01%～100%.
5, device according to claim 4, it is characterized in that the organic material that described luminescent layer comprises is selected from aromatic condensed ring compounds, coumarin kind compound, quinacridone compound, aromatic radical anthracene compounds, compound of fluorene class, perylene compounds, two fragrant alkene class aryl compounds, metal organic complex, two pyran compounds, oxadiazole compounds, triazole compound, benzimidazoles compound, biphenyl compound.
6, device according to claim 5, it is characterized in that, the organic material that comprises in the described luminescent layer is selected from hydroxyquinoline aluminum, oxyquinoline gallium, Al (Saph-q) Ga (Saph-q), or be selected from 9,10-two (2-naphthyl) anthracene, 4,4 '-two (2, the 2-diphenylacetylene)-1,1 '-biphenyl, rubrene, N, N-dimethyl quinacridine, C545T, DCJTB, 4-methylene dicyanoethyl-2-(to the dimethylamino styryl)-6-methyl-4H-pyrans, four uncle Ding Ji perylenes.
7, device according to claim 1 is characterized in that, the thickness of described luminescent layer is 10nm～200nm.
8, device according to claim 7 is characterized in that, the thickness of described luminescent layer is 30nm～120nm.
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| CN102473856A (en) * | 2010-04-12 | 2012-05-23 | 出光兴产株式会社 | Organic electroluminescent element |
| WO2013169918A1 (en) * | 2012-05-08 | 2013-11-14 | Carl Wagner | Naphthyl-containing compounds for light-emitting devices |
| CN103570629A (en) * | 2012-07-27 | 2014-02-12 | 昆山维信诺显示技术有限公司 | Benzanthracene derivatives containing pyrimidinyl, pyrazinyl or triazinyl groups and applications thereof |
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| WO2013169918A1 (en) * | 2012-05-08 | 2013-11-14 | Carl Wagner | Naphthyl-containing compounds for light-emitting devices |
| US9130172B2 (en) | 2012-05-08 | 2015-09-08 | Arizona Board Of Regents, A Body Corporate Of The State Of Arizona Acting For And On Behalf Of Arizona State University | Naphthyl-containing compounds for light-emitting devices |
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| TWI617534B (en) * | 2015-07-02 | 2018-03-11 | Evaporable ionic organic functional material and its application in organic electroluminescent device | |
| US10749128B2 (en) | 2015-07-02 | 2020-08-18 | Kunshan Go-Visionox Opto-Electronics Co., Ltd. | Depositable ion organic function material and use thereof in organic electroluminescent device |
| CN113072590A (en) * | 2015-07-02 | 2021-07-06 | 昆山国显光电有限公司 | Evaporation ion type organic functional material and application thereof in organic electroluminescent device |
| CN113972337A (en) * | 2020-07-23 | 2022-01-25 | 海宁奕诺炜特科技有限公司 | Organic electroluminescent device comprising capping layer and method for preparing the same |
| CN113972337B (en) * | 2020-07-23 | 2023-09-05 | 海宁奕诺炜特科技有限公司 | Organic electroluminescent device comprising capping layer and method for preparing the same |
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