CN101859881B

CN101859881B - Electronic transmission material, organic electroluminescent device and preparation method thereof

Info

Publication number: CN101859881B
Application number: CN 201010157742
Authority: CN
Inventors: 马东阁; 赵勇彪; 陈江山; 赵方超; 孙宁; 王利祥; 丁军桥
Original assignee: Changchun Institute of Applied Chemistry of CAS
Current assignee: Changzhou Institute of Energy Storage Materials & Devices
Priority date: 2010-04-28
Filing date: 2010-04-28
Publication date: 2013-02-13
Anticipated expiration: 2030-04-28
Also published as: CN101859881A

Abstract

The invention provides an electronic transmission material formed by doping Li2CO3 in 1, 3, 5-tri-[(3-pyridyl)-3-phenyl] benzene. The invention also provides an organic electroluminescent device which comprises a substrate, a first electrode layer arranged on the substrate, one or more organic electroluminescent layers arranged on the first electrode layer, an electronic injection transmission layer arranged on the organic electroluminescent layers and a second electrode layer arranged on the electronic injection transmission layer, wherein the electronic injection transmission layer is prepared from the Li2CO3-doped 1, 3, 5-tri-[(3-pyridyl)-3-phenyl] benzene. In the invention, the Li2CO3 is doped in the 1, 3, 5-tri-[(3-pyridyl)-3-phenyl] benzene (TmPyPB) to improve the electron mobility of the TmPyPB, reduce the working voltage of the device and realize the concentration balance of electrons and cavities in the electroluminescent layers so that the performance and the efficiency of the device are improved.

Description

Electron transport material, organic electroluminescence device and preparation method thereof

Technical field

The present invention relates to technical field of organic electroluminescence, relate in particular to a kind of electron transport material, organic electroluminescence device and preparation method thereof.

Background technology

Organic electroluminescence device is a kind of selfluminous element, have that the material range of choice is wide, voltage is low, brightness is high, the visual angle is wide, response is fast, thermal adaptability is good, can realize being widely used in the flat-panel monitors such as digital camera, mobile phone, MP3 by the characteristics such as full color demonstration of blue light region to red light district.

Organic electroluminescence device comprises anode, luminescent layer and negative electrode at least, and principle of luminosity is as follows: under the effect of electric field, hole and electronics inject from anode and negative electrode respectively, are compounded to form exciton at luminescent layer, and the exciton attenuation is luminous.In order to improve the luminescent properties of device, prior art generally increases one deck electron transfer layer between luminescent layer and negative electrode, in order to injection and the transmission situation of improving electronics.Electron transport material must satisfy following requirement: have higher electron mobility, be easy to transmission electronic; Has stronger electronics receiving ability; Have higher electron affinity energy, be easy to inject electronics etc. by negative electrode.

At present, prior art discloses multiple electronic injection/transferring material, wherein, 1,3,5-three [(3-pyridine radicals)-3-phenyl] benzene (TmPyPB) has high triplet, can be higher with triplet, but the blue light organophosphor photoinitiator dye that efficient is lower matches and improves the luminous efficiency of blue light organophosphor photoinitiator dye, thereby improve blue light organic electroluminescence device or contain performance and the efficient of the white light organic electroluminescent device of blue light organophosphor photoinitiator dye, but the electron transfer rate of the TmPyPB that records with the space charge limited current fitting process only can reach 10 ^-7Cm ²V ^-1s ^-1Well below the hole migration speed of hole mobile material commonly used, the difference of electron transport material and hole mobile material transmission rate causes electronics and the hole concentration in the luminescent layer uneven, and operating voltage is higher, thereby the performance of restriction organic electroluminescence device makes device efficiency lower.

Summary of the invention

In view of this, technical problem to be solved by this invention is to provide a kind of electron transport material, organic electroluminescence device and preparation method thereof, electron transport material provided by the invention has higher electron mobility, the concentration in electronics and hole in can the balance luminescent layer, reduce the device operating voltage, thereby improve the performance of organic electroluminescence device.

The invention provides a kind of electron transport material, by Li ₂CO ₃Be entrained in 1,3,5-three [(3-the pyridine radicals)-3-phenyl] benzene and form.

Preferably, described Li ₂CO ₃With 1,3,5-three [(3-pyridine radicals)-3-phenyl] benzene be 0.02-0.1 in mass ratio: 1.

The present invention also provides a kind of organic electroluminescence device, comprising:

Substrate;

At described substrate the first electrode layer is arranged;

At described the first electrode layer one or more layers organic electro luminescent layer is arranged;

In described organic electro luminescent layer the electronic injection transport layer is arranged, described electronic injection transport layer is made of the described electron transport material of technique scheme;

In described electronic injection transport layer the second electrode lay is arranged.

Preferably, between described the first electrode layer and described organic electro luminescent layer, also comprise hole injection layer.

Preferably, described hole injection layer is made of poly-3,4-rthylene dioxythiophene-polystyrolsulfon acid (PEDOT:PSS).

Preferably, between described hole injection layer and described organic electro luminescent layer, also comprise hole transmission layer and/or electronic barrier layer.

Preferably, between described organic electro luminescent layer and described electronic injection transport layer, also comprise hole blocking layer.

Preferably, described hole blocking layer is made of 1,3,5-three [(3-pyridine radicals)-3-phenyl] benzene.

Preferably, between described electronic injection transport layer and described the second electrode lay, also comprise electron injecting layer.

The present invention also provides a kind of preparation method of organic electroluminescence device, comprising:

Form the first electrode at substrate;

Form one or more layers organic electro luminescent layer at described the first electrode;

Form the electronic injection transport layer in described organic electro luminescent layer, described electronic injection transport layer is made of the described electron transport material of technique scheme;

Form the second electrode at described electron transfer layer.

Compared with prior art, the present invention is with Li ₂CO ₃Be entrained in 1,3,5-three [(3-the pyridine radicals)-3-phenyl] benzene (TmPyPB), improved the electron mobility of TmPyPB, experiment shows, Li ₂CO ₃The electron mobility of the TmPyPB that mixes can reach 3 * 10 ^-4Cm ²/ v/s.Li ₂CO ₃The TmPyPB that mixes can improve electron mobility as the electronic injection transport layer of organic electroluminescence device, and the concentration balance in electronics and hole reduces the device operating voltage in the realization luminescent layer, thereby improves performance of devices and efficient.Experiment shows, with Li ₂CO ₃The TmPyPB that mixes as electronic injection transport layer, FIrpic and (fbi) 2Ir (acac) co-doped in TCTA as the white light organic electroluminescent device of luminescent layer preparation to play bright voltage be 2.6V, high-high brightness is 48000cd/m ², maximum current efficient is 55cd/A, and maximum power efficiency is 55lm/A, and brightness is 1000cd/m ²The time efficient be 40lm/W.

Description of drawings

The structural representation of the organic electroluminescence device that Fig. 1 provides for the embodiment of the invention;

The cross-sectional view of the organic electroluminescence device that Fig. 2 provides for the embodiment of the invention;

The voltage-to-current densogram of the electron transport material that Fig. 3 provides for the embodiment of the invention;

The voltage-to-current density of the white light organic electroluminescent device that Fig. 4 provides for the embodiment of the invention 2-brightness curve figure;

Current density-the power efficiency of the white light organic electroluminescent device that Fig. 5 provides for the embodiment of the invention 2-current efficiency curve chart;

The wavelength of the white light organic electroluminescent device that Fig. 6 provides for the embodiment of the invention 2 under different voltages-luminous intensity curve chart;

The voltage-to-current density of the white light organic electroluminescent device that Fig. 7 provides for the embodiment of the invention 9-brightness curve figure;

Current density-the power efficiency of the white light organic electroluminescent device that Fig. 8 provides for the embodiment of the invention 9-current efficiency curve chart;

The wavelength of the white light organic electroluminescent device that Fig. 9 provides for the embodiment of the invention 9 under different voltages-luminous intensity curve chart.

Embodiment

Li ₂CO ₃Be entrained among the TmPyPB, can significantly improve its space charge concentration, thereby improve the carrier mobility of TmPyPB.According to the present invention, described Li ₂CO ₃Be preferably in mass ratio 0.02-0.1 with 1,3,5-three [(3-pyridine radicals)-3-phenyl] benzene: 1,0.025%-0.05% more preferably.

The present invention is to Li ₂CO ₃The method that is entrained in 1,3,5-three [(3-pyridine radicals)-3-phenyl] benzene does not have particular restriction, is preferably according to following steps and mixes:

Utilize the vacuum thermal evaporation system, make Li ₂CO ₃Evaporate simultaneously with TmPyPB, by control Li ₂CO ₃With the evaporation rate of TmPyPB, with Li ₂CO ₃Be entrained in TmPyPB.

Substrate;

At described substrate the first electrode layer is arranged;

In described organic electro luminescent layer the electronic injection transport layer is arranged, described electronic injection transport layer is by Li ₂CO ₃The TmPyPB that mixes consists of;

The present invention does not have specific (special) requirements to described substrate, is preferably glass or flexible polymer.According to the present invention, described the first electrode is anode, the material that injects for being easy to the hole is preferably conducting metal or conducting metal oxide or conducting polymer, includes but not limited to nickel, platinum, gold, indium tin oxide (ITO) and indium-zinc oxide (IZO); The work function of described the first electrode is preferably 4.7eV-5.2eV.

The present invention does not have particular restriction to organic electro luminescent layer, can be single luminescent layer bill coloured light or white light, also can be multilayer luminescent layer bill coloured light or white light: when organic electro luminescent layer is single luminescent layer, can be entrained in the composite material that forms in the material of main part by monochromatic organophosphor photoinitiator dye consists of, also can be consisted of by the composite material of organophosphor photoinitiator dye co-doped in material of main part of multiple color, be preferably by blue light, the composite material that orange light organophosphor photoinitiator dye co-doped forms in material of main part consists of or by blue light, green glow, the composite material that three kinds of organophosphor photoinitiator dyes of ruddiness co-doped forms in material of main part consists of; When organic electro luminescent layer is the multilayer luminescent layer, every layer of luminescent layer can be made of the composite material that monochromatic organophosphor photoinitiator dye is entrained in the material of main part, also can be made of the composite material of organophosphor photoinitiator dye co-doped in material of main part of multiple color, described multilayer luminescent layer is preferably three luminescent layers or red and green luminous layer and the common double emitting layers that consists of of blue light-emitting layer that blue light-emitting layer and the common double emitting layers that consists of of orange light emitting layer or blue light-emitting layer, green light emitting layer and red light emitting layer consist of.Wherein, the blue emitting phosphor dyestuff is preferably two (2,4-diphenyl pyridine) iridium (dicarboxyl pyridine) (FIrpic); Orange light phosphorescent coloring be preferably 2-(9 ', 9 '-diethyl fluorenes-2 '-)-1-phenyl benzimidazole iridium (acetylacetone,2,4-pentanedione) ((fbi) 2Ir (acac)); The green glow phosphorescent coloring is that three (2-phenylpyridines) close iridium (Ir (ppy) ₃), acetopyruvic acid two (2-phenylpyridine) iridium ((ppy) ₂Ir (acac)) or three (2-is to phenylpyridines) close iridium (Ir (mppy) ₃); The ruddiness phosphorescent coloring is preferably acetopyruvic acid two (2-methyl Benzoquinoxalines) and closes iridium (Ir (MDQ) ₂(acac)), acetopyruvic acid two (2,4-diphenyl quinoline) closes iridium ((PPQ) ₂Ir (acac)), three (1-phenyl isoquinolin quinoline bases) close iridium (Ir (piq) ₃); Material of main part is preferably 4,4 ', 4 " three (N-carbazole) triphenylamines (TCTA) or 1,3 two carbazyl benzene (mCP) or other have the ambipolar main body of high triplet; The organophosphor photoinitiator dye that mixes and the mass ratio of material of main part are preferably 0.75%-20%, more preferably 5%-20%.

The effect of described electronic injection transport layer is to reduce driving voltage, makes by the electronics of negative electrode injection luminescent layer comparatively rapid.According to the present invention, described electronic injection transport layer is by Li ₂CO ₃The TmPyPB that mixes consists of, and the thickness of electronic injection transport layer is preferably 30nm-40nm; Described Li ₂CO ₃Be preferably in mass ratio 0.02-0.1 with TmPyPB: 1.

According to the present invention, described the second electrode is negative electrode, is preferably the metal of low work content, includes but not limited to calcium, barium, aluminium, magnesium and silver, and the thickness of described the second electrode is preferably 100nm-300nm.

In order to improve device performance and efficient, between described the first electrode and described organic electro luminescent layer, preferably include hole injection layer.Hole injection layer can reduce the contact resistance between the first electrode and the organic electro luminescent layer, increases the injectability in hole.Described hole injection layer is water-soluble high-molecular material or the organic small molecule material with high hole injection efficiency, is preferably poly-3,4-rthylene dioxythiophene/polystyrolsulfon acid (PEDOT:PSS); The triplet of PEDOT:PSS is higher, need not to use expensive p dopant F4-TCNQ during take PEDOT:PSS as hole injection layer, can reduce cost; The thickness of described hole injection layer is preferably 30nm-40nm.

In order to improve the transmission rate in hole, make the hole of anode injection luminescent layer comparatively stable, the present invention preferably is provided with hole transmission layer between described hole injection layer and described organic electro luminescent layer, described hole transmission layer is preferably the material that possesses following performance: (1) the highest track that is occupied is 4.8eV-5.4eV; (2) hole mobility is greater than 10 ^-4Cm ²/ v/s, therefore, described hole transmission layer can be N, N '-two (1-naphthyl)-N, N '-diphenyl-1,1 '-diphenyl-4,4 '-diamines (NPB).

According to the present invention, between described hole transmission layer and described organic electro luminescent layer, preferably include electronic barrier layer, purpose is to stop that exciton or electron transfer are to hole transmission layer.Described electronic barrier layer is preferably the organic material with high triplet and hole transport electronic blocking performance, more preferably 4,4 ', 4 " three (carbazole-9-yl) triphenylamine (TCTA), 9; 9 '-(1,3-phenyl) two-9H-carbazole (mCP) or two (two para-totuidine) cyclohexylbenzenes (TAPC); The thickness of described electronic barrier layer is preferably 3nm-5nm.

According to the present invention, between described organic electro luminescent layer and described electronic injection transport layer, preferably include hole blocking layer, described hole blocking layer can be moved to the electronic injection transport layer by blocking hole, can play simultaneously the effect of electric transmission, therefore, described hole blocking layer is preferably the organic material that possesses following characteristic: (1) minimum track that is not occupied is 2.7eV-4.0eV; (2) triplet is greater than 2.7eV; (3) have good electron mobility, therefore, described hole blocking layer is preferably TmPyPB; The thickness of described hole blocking layer is preferably 10nm-15nm.

In order to reduce the contact resistance between electronic injection transport layer and the described negative electrode, increase the injectability of electronics, organic electroluminescence device of the present invention preferably includes electron injecting layer between described electronic injection transport layer and described negative electrode, described electron injecting layer is preferably alkali metal or alkali metal salt, includes but not limited to LiF, Li ₂CO ₃, Cs ₂CO ₃, CsF or CaF ₂The thickness of described electron injecting layer is preferably 0.5nm-2nm.

Below in conjunction with accompanying drawing organic electroluminescence device provided by the invention is described, referring to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of organic electroluminescence device provided by the invention, the cross-sectional view of the organic electroluminescence device that Fig. 2 provides for the embodiment of the invention, as seen from the figure, described organic electroluminescence device is connected to form successively by substrate 1, anode 2, hole injection layer 3, hole transmission layer 4, electronic barrier layer 5, luminescent layer 6, hole blocking layer 7, electronic injection transport layer 8, electron injecting layer 9 and negative electrode 10.

Form the first electrode at substrate;

Form the electronic injection transport layer in described organic electro luminescent layer, described electronic injection transport layer is by Li ₂CO ₃The TmPyPB that mixes consists of;

Form the second electrode at described electron transfer layer.

At first on substrate, form the first electrode according to method well known to those skilled in the art, also can be directly carve the first electrode at ito glass or other conducting metal glass or other conductive plasticss.

After forming the first electrode, form one or more layers organic electro luminescent layer at the first electrode, the present invention does not have particular restriction to described formation method, is preferably vacuum evaporation.

The present invention does not have particular restriction to the method that forms the electronic injection transport layer in organic electro luminescent layer, is preferably vacuum evaporation.During vacuum evaporation, with Li ₂CO ₃Evaporate simultaneously with TmPyPB, on organic electro luminescent layer, jointly deposit, form the electronic injection transport layer.

Form the second electrode according to method well known to those skilled in the art on the electronic injection transport layer, described formation method is preferably vacuum evaporation.

In order to improve performance of devices and efficient, the present invention preferably forms hole injection layer at the first electrode, and described formation method is preferably spin coating.For hole injection layer is spin-coated on the first electrode uniformly, before spin coating, preferably with described the first electrode clean, dry up with nitrogen, then use plasma treatment.In order to make the hole injection layer material form layer, after spin coating, preferably described substrate, the first electrode, hole injection layer are toasted.

The present invention preferably forms hole transmission layer and/or electronic barrier layer successively on described hole injection layer, described formation method is vacuum evaporation.

In order to improve performance of devices, the present invention preferably forms hole blocking layer in described organic electro luminescent layer, and described formation method is preferably vacuum evaporation.

The present invention preferably forms electron injecting layer in described electronic injection transport layer, and described formation method is preferably vacuum evaporation.

In the preparation of organic electroluminescence device provided by the invention, the employed material of each layer structure, the isoparametric preferable range of thickness are identical with the preferable range of above-mentioned organic electroluminescence device.

In order further to understand the present invention, below in conjunction with embodiment electron transport material provided by the invention, organic electroluminescence device and preparation method thereof are described in detail.

Embodiment 1

Utilize the vacuum thermal evaporation system, the TmPyPB evaporation rate is 0.2nm/s, Li ₂CO ₃Evaporation rate is 0.005nm/s, obtains the thick mass ratio of 200nm and be 1: 0.03 film;

Described film preparation is become single-electron device, and it is carried out performance test, the result is referring to the curve a among Fig. 3, the voltage-to-current densogram of the electron transport material that Fig. 3 provides for the embodiment of the invention, and curve a is Li ₂CO ₃The voltage-to-current density curve of the TmPyPB film that mixes, as shown in Figure 1, Li ₂CO ₃The current density of TmPyPB film under 10V voltage of mixing can reach 10 ³MA/cm ²

(I) calculates its electron mobility according to formula, Li provided by the invention ₂CO ₃The electron mobility of the TmPyPB that mixes reaches 10 ^-4Cm ²/ v/s.

Formula (I) is:

j_{e} (V) = \frac{9}{8} ϵ_{0} ϵ_{r} μ_{0, e} \frac{V^{2}}{L^{3}} - - - (I)

Wherein, j _e(V) be current density;

ε ₀Be permittivity of vacuum, numerical value is 8.854 * 10 ^-12F/m;

ε _rBe relative dielectric constant, numerical value is 3;

V is voltage;

L is thickness of sample;

μ _{0, e}For wanting the match mobility

Embodiment 2

The electrode of first ITO on the ito glass is photo-etched into that 4mm is wide, 30mm is long, then with described electrode clean, dry up with nitrogen rear with oxygen plasma treatment 2 minutes; Described electrode is placed on the spin coating instrument, with 3000 turn/the speed PEDOT:PSS that spin coating one deck 30nm is thick on described electrode of min, toasts described electrode 30 minutes under 120 ℃ temperature behind the spin coating 1min as hole injection layer; Then 4 * 10 ^-5The NPB hole transmission layer that vacuum evaporation 50nm is thick on hole injection layer under the Pa pressure, the evaporation rate of NPB are 0.1nm/s; The TCTA electronic barrier layer that vacuum evaporation 5nm is thick on hole transmission layer, the evaporation rate of TCTA are 0.1nm/s; The FIrpic that vacuum evaporation 10nm is thick on electronic barrier layer and (fbi) ₂The luminescent layer that Ir (acac) co-doped forms in TCTA, the evaporation rate of FIrpic is 0.015nm/s, with the mass percent of TCTA be 15%; (fbi) ₂The evaporation rate of Ir (acac) is 0.001nm/s, with the mass percent of TCTA be that the evaporation rate of 1%, TCTA is 0.1nm/s; The TmPyPB hole blocking layer that vacuum evaporation 15nm is thick on luminescent layer, the evaporation rate of TmPyPB are 0.1nm/s; The electronic injection transport layer of the lithium carbonate doping TmPyPB that vacuum evaporation 35nm is thick on hole blocking layer, the evaporation rate of lithium carbonate is 0.003nm/s, the evaporation rate of TmPyPB is 0.1nm/s; The lithium carbonate electron injecting layer that vacuum evaporation 1nm is thick on the electronic injection transport layer, the evaporation rate of lithium carbonate are 0.005nm/s; The Al that vacuum evaporation 100nm is thick on electron injecting layer is as negative electrode, and the evaporation rate of Al is 1nm/s, and obtaining the luminous zone area is 16mm ², white light organic electroluminescent device with following structure:

ITO/PEDOT:PSS(30nm)/NPB(50nm)/TCTA(5nm)/TCTA:FIrpic:(fbi) ₂Ir(acac)(10nm)/TmPyPB(15nm)/TmPyPB:Li ₂CO ₃(35nm)/Li ₂CO ₃(1nm)/Al(100nm)。

Described white light organic electroluminescent device is carried out performance test, the result is referring to Fig. 4, Fig. 5 and Fig. 6, the voltage-to-current density of the white light organic electroluminescent device that Fig. 4 provides for the embodiment of the invention 2-brightness curve figure, as shown in Figure 4, a bright voltage of the organic electroluminescence device of present embodiment preparation is 2.6V, and high-high brightness is 48000cd/m ², the brightness when 3.5V voltage is 1000cd/m ²Current density-the power efficiency of the white light organic electroluminescent device that Fig. 5 provides for the embodiment of the invention 2-current efficiency curve chart, as shown in Figure 5, the maximum current efficient of the organic electroluminescence device that the embodiment of the invention provides is 55cd/A, maximum power efficiency is 55lm/A, and brightness is 1000cd/m ²Efficient be 40lm/W; The wavelength of the white light organic electroluminescent device that Fig. 6 provides for the embodiment of the invention 2 under different voltages-luminous intensity curve chart, as shown in Figure 6, organic electroluminescence device provided by the invention shows indigo plant, two kinds of complementary colours of orange are simultaneously luminous, at 1000cd/m ²Brightness under, the chromaticity coordinates of described organic electroluminescence device is (0.34,0.43).

Embodiment 3

The electrode of first ITO on the ito glass is photo-etched into that 4mm is wide, 30mm is long, then with described electrode clean, dry up with nitrogen rear with oxygen plasma treatment 2 minutes; Described electrode is placed on the spin coating instrument, with 3000 turn/the speed PEDOT:PSS that spin coating one deck 30nm is thick on described electrode of min, toasts described electrode 30 minutes under 120 ℃ temperature behind the spin coating 1min as hole injection layer; Then 4 * 10 ^-5The NPB hole transmission layer that vacuum evaporation 50nm is thick on hole injection layer under the Pa pressure, the evaporation rate of NPB are 0.1nm/s; The TCTA electronic barrier layer that vacuum evaporation 5nm is thick on hole transmission layer, the evaporation rate of TCTA are 0.1nm/s; The FIrpic that vacuum evaporation 10nm is thick on electronic barrier layer and (fbi) ₂The luminescent layer that Ir (acac) co-doped forms in TCTA, the evaporation rate of FIrpic is 0.015nm/s, with the mass percent of TCTA be 8%; (fbi) ₂The evaporation rate of Ir (acac) is 0.001nm/s, with the mass percent of TCTA be 1%; The TmPyPB hole blocking layer that vacuum evaporation 15nm is thick on luminescent layer, the evaporation rate of TmPyPB are 0.1nm/s; The electronic injection transport layer of the lithium carbonate doping TmPyPB that vacuum evaporation 35nm is thick on hole blocking layer, the evaporation rate of lithium carbonate is 0.003nm/s, the evaporation rate of TmPyPB is 0.1nm/s; The lithium carbonate electron injecting layer that vacuum evaporation 1nm is thick on the electronic injection transport layer, the evaporation rate of lithium carbonate are 0.005nm/s; The Al that vacuum evaporation 100nm is thick on electron injecting layer is as negative electrode, and the evaporation rate of Al is 1nm/s, and obtaining the luminous zone area is 16mm ², white light organic electroluminescent device with following structure:

Described white light organic electroluminescent device is carried out performance test, and the result shows that a bright voltage of the organic electroluminescence device of present embodiment preparation is 2.6V, and high-high brightness is 48000cd/m ², the brightness when 3.5V voltage is 1000cd/m ²The maximum current efficient of organic electroluminescence device is 56cd/A, and maximum power efficiency is 53lm/A, and brightness is 1000cd/m ²Efficient be 39lm/W; Organic electroluminescence device shows indigo plant, two kinds of complementary colours of orange are simultaneously luminous, at 1000cd/m ²Brightness under, the chromaticity coordinates of described organic electroluminescence device is (0.35,0.44).

Embodiment 4

The electrode of first ITO on the ito glass is photo-etched into that 4mm is wide, 30mm is long, then with described electrode clean, dry up with nitrogen rear with oxygen plasma treatment 2 minutes; Described electrode is placed on the spin coating instrument, with 3000 turn/the speed PEDOT:PSS that spin coating one deck 30nm is thick on described electrode of min, toasts described electrode 30 minutes under 120 ℃ temperature behind the spin coating 1min as hole injection layer; Then 4 * 10 ^-5The NPB hole transmission layer that vacuum evaporation 50nm is thick on hole injection layer under the Pa pressure, the evaporation rate of NPB are 0.1nm/s; The TCTA electronic barrier layer that vacuum evaporation 5nm is thick on hole transmission layer, the evaporation rate of TCTA are 0.1nm/s; Thick (fbi) of vacuum evaporation 5nm on electronic barrier layer ₂Ir (acac) is entrained in the orange light emitting layer that forms among the TCTA, (fbi) ₂The evaporation rate of Ir (acac) is 0.30nm/s, with the mass percent of TCTA be 6%; The FIrpic that vacuum evaporation 5nm is thick on orange light emitting layer is entrained in the blue light-emitting layer that forms among the TCTA, and the evaporation rate of FIrpic is 0.12nm/s, with the mass percent of TCTA be 15%; The TmPyPB hole blocking layer that vacuum evaporation 15nm is thick on blue light-emitting layer, the evaporation rate of TmPyPB are 0.1nm/s; The electronic injection transport layer of the lithium carbonate doping TmPyPB that vacuum evaporation 35nm is thick on hole blocking layer, the evaporation rate of lithium carbonate is 0.003nm/s, the evaporation rate of TmPyPB is 0.1nm/s; The lithium carbonate electron injecting layer that vacuum evaporation 1nm is thick on the electronic injection transport layer, the evaporation rate of lithium carbonate are 0.005nm/s; The Al that vacuum evaporation 100nm is thick on electron injecting layer is as negative electrode, and the evaporation rate of Al is 1nm/s, and obtaining the luminous zone area is 16mm ², white light organic electroluminescent device with following structure:

ITO/PEDOT:PSS(30nm)/NPB(50nm)/TCTA(5nm)/TCTA:(fbi) ₂Ir(acac)(5nm)/TCTA:FIrpic(5nm)/TmPyPB(15nm)/TmPyPB:Li ₂CO ₃(35nm)/Li ₂CO ₃(1nm)/Al(100nm)。

Described white light organic electroluminescent device is carried out performance test, and the result shows that a bright voltage of the organic electroluminescence device of present embodiment preparation is 2.6V, and high-high brightness is 48000cd/m ², the brightness when 3.5V voltage is 1000cd/m ²The maximum current efficient of organic electroluminescence device is 56cd/A, and maximum power efficiency is 55lm/A, and brightness is 1000cd/m ²Efficient be 40lm/W; Organic electroluminescence device shows indigo plant, two kinds of complementary colours of orange are simultaneously luminous, at 1000cd/m ²Brightness under, the chromaticity coordinates of described organic electroluminescence device is (0.35,0.44).

Embodiment 5

The electrode of first ITO on the ito glass is photo-etched into that 4mm is wide, 30mm is long, then with described electrode clean, dry up with nitrogen rear with oxygen plasma treatment 2 minutes; Described electrode is placed on the spin coating instrument, with 3000 turn/the speed PEDOT:PSS that spin coating one deck 30nm is thick on described electrode of min, toasts described electrode 30 minutes under 120 ℃ temperature behind the spin coating 1min as hole injection layer; Then 4 * 10 ^-5The NPB hole transmission layer that vacuum evaporation 50nm is thick on hole injection layer under the Pa pressure, the evaporation rate of NPB are 0.1nm/s; The TCTA electronic barrier layer that vacuum evaporation 5nm is thick on hole transmission layer, the evaporation rate of TCTA are 0.1nm/s; Thick (fbi) of vacuum evaporation 5nm on electronic barrier layer ₂Ir (acac) is entrained in the orange light emitting layer that forms among the TCTA, (fbi) ₂The evaporation rate of Ir (acac) is 0.30nm/s, with the mass percent of TCTA be 10%; The FIrpic that vacuum evaporation 5nm is thick on orange light emitting layer is entrained in the blue light-emitting layer that forms among the TCTA, and the evaporation rate of FIrpic is 0.20nm/s, with the mass percent of TCTA be 15%; The TmPyPB hole blocking layer that vacuum evaporation 15nm is thick on blue light-emitting layer, the evaporation rate of TmPyPB are 0.1nm/s; The electronic injection transport layer of the lithium carbonate doping TmPyPB that vacuum evaporation 35nm is thick on hole blocking layer, the evaporation rate of lithium carbonate is 0.003nm/s, the evaporation rate of TmPyPB is 0.1nm/s; The lithium carbonate electron injecting layer that vacuum evaporation 1nm is thick on the electronic injection transport layer, the evaporation rate of lithium carbonate are 0.005nm/s; The Al that vacuum evaporation 100nm is thick on electron injecting layer is as negative electrode, and the evaporation rate of Al is 1nm/s, and obtaining the luminous zone area is 16mm ², structure is ITO/PEDOT:PSS (30nm)/NPB (50nm)/TCTA (5nm)/TCTA:(fbi) ₂Ir (acac) (5nm)/TCTA:FIrpic (5nm)/TmPyPB (15nm)/TmPyPB:Li ₂CO ₃(35nm)/Li ₂CO ₃(1nm)/white light organic electroluminescent device of Al (100nm).

Described white light organic electroluminescent device is carried out performance test, and the result shows that a bright voltage of the organic electroluminescence device of present embodiment preparation is 2.6V, and high-high brightness is 48000cd/m ², the brightness when 3.5V voltage is 1000cd/m ²The maximum current efficient of organic electroluminescence device is 53cd/A, and maximum power efficiency is 52lm/A, and brightness is 1000cd/m ²Efficient be 37lm/W; Organic electroluminescence device shows indigo plant, two kinds of complementary colours of orange are simultaneously luminous, at 1000cd/m ²Brightness under, the chromaticity coordinates of described organic electroluminescence device is (0.35,0.43).

Embodiment 6

The electrode of first ITO on the ito glass is photo-etched into that 4mm is wide, 30mm is long, then with described electrode clean, dry up with nitrogen rear with oxygen plasma treatment 2 minutes; Described electrode is placed on the spin coating instrument, with 3000 turn/the speed PEDOT:PSS that spin coating one deck 30nm is thick on described electrode of min, toasts described electrode 30 minutes under 120 ℃ temperature behind the spin coating 1min as hole injection layer; Then 4 * 10 ^-5The NPB hole transmission layer that vacuum evaporation 50nm is thick on hole injection layer under the Pa pressure, the evaporation rate of NPB are 0.1nm/s; The TCTA electronic barrier layer that vacuum evaporation 5nm is thick on hole transmission layer, the evaporation rate of TCTA are 0.1nm/s; Thick (fbi) of vacuum evaporation 5nm on electronic barrier layer ₂Ir (acac) is entrained in the orange light emitting layer that forms among the TCTA, (fbi) ₂The evaporation rate of Ir (acac) is 0.30nm/s, with the mass percent of TCTA be 4%; The FIrpic that vacuum evaporation 5nm is thick on orange light emitting layer is entrained in the blue light-emitting layer that forms among the TCTA, and the evaporation rate of FIrpic is 0.08nm/s, with the mass percent of TCTA be 15%; The TmPyPB hole blocking layer that vacuum evaporation 15nm is thick on blue light-emitting layer, the evaporation rate of TmPyPB are 0.1nm/s; The electronic injection transport layer of the lithium carbonate doping TmPyPB that vacuum evaporation 35nm is thick on hole blocking layer, the evaporation rate of lithium carbonate is 0.003nm/s, the evaporation rate of TmPyPB is 0.1nm/s; The lithium carbonate electron injecting layer that vacuum evaporation 1nm is thick on the electronic injection transport layer, the evaporation rate of lithium carbonate are 0.005nm/s; The Al that vacuum evaporation 100nm is thick on electron injecting layer is as negative electrode, and the evaporation rate of Al is 1nm/s, and obtaining the luminous zone area is 16mm ², structure is ITO/PEDOT:PSS (30nm)/NPB (50nm)/TCTA (5nm)/TCTA:(fbi) ₂Ir (acac) (5nm)/TCTA:FIrpic (5nm)/TmPyPB (15nm)/TmPyPB:Li ₂CO ₃(35nm)/Li ₂CO ₃(1nm)/white light organic electroluminescent device of Al (100nm).

Described white light organic electroluminescent device is carried out performance test, and the result shows that a bright voltage of the organic electroluminescence device of present embodiment preparation is 2.6V, and high-high brightness is 48000cd/m ², the brightness when 3.5V voltage is 1000cd/m ²The maximum current efficient of organic electroluminescence device is 54cd/A, and maximum power efficiency is 50lm/A, and brightness is 1000cd/m ²Efficient be 38lm/W; Organic electroluminescence device shows indigo plant, two kinds of complementary colours of orange are simultaneously luminous, at 1000cd/m ²Brightness under, the chromaticity coordinates of described organic electroluminescence device is (0.36,0.43).

Embodiment 7

The electrode of first ITO on the ito glass is photo-etched into that 4mm is wide, 30mm is long, then with described electrode clean, dry up with nitrogen rear with oxygen plasma treatment 2 minutes; Described electrode is placed on the spin coating instrument, with 3000 turn/the speed PEDOT:PSS that spin coating one deck 30nm is thick on described electrode of min, toasts described electrode 30 minutes under 120 ℃ temperature behind the spin coating 1min as hole injection layer; Then 4 * 10 ^-5The NPB hole transmission layer that vacuum evaporation 50nm is thick on hole injection layer under the Pa pressure, the evaporation rate of NPB are 0.1nm/s; The TCTA electronic barrier layer that vacuum evaporation 5nm is thick on hole transmission layer, the evaporation rate of TCTA are 0.1nm/s; Thick (fbi) of vacuum evaporation 5nm on electronic barrier layer ₂Ir (acac) is entrained in the orange light emitting layer that forms among the TCTA, (fbi) ₂The evaporation rate of Ir (acac) is 0.40nm/s, with the mass percent of TCTA be 6%; The FIrpic that vacuum evaporation 5nm is thick on orange light emitting layer is entrained in the blue light-emitting layer that forms among the TCTA, and the evaporation rate of FIrpic is 0.12nm/s, with the mass percent of TCTA be 20%; The TmPyPB hole blocking layer that vacuum evaporation 15nm is thick on blue light-emitting layer, the evaporation rate of TmPyPB are 0.1nm/s; The electronic injection transport layer of the lithium carbonate doping TmPyPB that vacuum evaporation 35nm is thick on hole blocking layer, the evaporation rate of lithium carbonate is 0.003nm/s, the evaporation rate of TmPyPB is 0.1nm/s; The lithium carbonate electron injecting layer that vacuum evaporation 1nm is thick on the electronic injection transport layer, the evaporation rate of lithium carbonate are 0.005nm/s; The Al that vacuum evaporation 100nm is thick on electron injecting layer is as negative electrode, and the evaporation rate of Al is 1nm/s, and obtaining the luminous zone area is 16mm ², structure is ITO/PEDOT:PSS (30nm)/NPB (50nm)/TCTA (5nm)/TCTA:(fbi) ₂Ir (acac) (5nm)/TCTA:FIrpic (5nm)/TmPyPB (15nm)/TmPyPB:Li ₂CO ₃(35nm)/Li ₂CO ₃(1nm)/white light organic electroluminescent device of Al (100nm).

Described white light organic electroluminescent device is carried out performance test, and the result shows that a bright voltage of the organic electroluminescence device of present embodiment preparation is 2.6V, and high-high brightness is 48000cd/m ₂, the brightness when 3.5V voltage is 1000cd/m ₂The maximum current efficient of organic electroluminescence device is 53cd/A, and maximum power efficiency is 51lm/A, and brightness is 1000cd/m ²Efficient be 38lm/W; Organic electroluminescence device shows indigo plant, two kinds of complementary colours of orange are simultaneously luminous, at 1000cd/m ²Brightness under, the chromaticity coordinates of described organic electroluminescence device is (0.36,0.44).

Embodiment 8

The electrode of first ITO on the ito glass is photo-etched into that 4mm is wide, 30mm is long, then with described electrode clean, dry up with nitrogen rear with oxygen plasma treatment 2 minutes; Described electrode is placed on the spin coating instrument, with 3000 turn/the speed PEDOT:PSS that spin coating one deck 30nm is thick on described electrode of min, toasts described electrode 30 minutes under 120 ℃ temperature behind the spin coating 1min as hole injection layer; Then 4 * 10 ^-5The NPB hole transmission layer that vacuum evaporation 50nm is thick on hole injection layer under the Pa pressure, the evaporation rate of NPB are 0.1nm/s; The TCTA electronic barrier layer that vacuum evaporation 5nm is thick on hole transmission layer, the evaporation rate of TCTA are 0.1nm/s; Thick (fbi) of vacuum evaporation 5nm on electronic barrier layer ₂Ir (acac) is entrained in the orange light emitting layer that forms among the TCTA, (fbi) ₂The evaporation rate of Ir (acac) is 0.20nm/s, with the mass percent of TCTA be 6%; The FIrpic that vacuum evaporation 5nm is thick on orange light emitting layer is entrained in the blue light-emitting layer that forms among the TCTA, and the evaporation rate of FIrpic is 0.12nm/s, with the mass percent of TCTA be 10%; The TmPyPB hole blocking layer that vacuum evaporation 15nm is thick on blue light-emitting layer, the evaporation rate of TmPyPB are 0.1nm/s; The electronic injection transport layer of the lithium carbonate doping TmPyPB that vacuum evaporation 35nm is thick on hole blocking layer, the evaporation rate of lithium carbonate is 0.003nm/s, the evaporation rate of TmPyPB is 0.1nm/s; The lithium carbonate electron injecting layer that vacuum evaporation 1nm is thick on the electronic injection transport layer, the evaporation rate of lithium carbonate are 0.005nm/s; The Al that vacuum evaporation 100nm is thick on electron injecting layer is as negative electrode, and the evaporation rate of Al is 1nm/s, and obtaining the luminous zone area is 16mm ², structure is ITO/PEDOT:PSS (30nm)/NPB (50nm)/TCTA (5nm)/TCTA:(fbi) ₂Ir (acac) (5nm)/TCTA:FIrpic (5nm)/TmPyPB (15nm)/TmPyPB:Li ₂CO ₃(35nm)/Li ₂CO ₃(1nm)/white light organic electroluminescent device of Al (100nm).

Described white light organic electroluminescent device is carried out performance test, and the result shows that a bright voltage of the organic electroluminescence device of present embodiment preparation is 2.6V, and high-high brightness is 48000cd/m ², the brightness when 3.5V voltage is 1000cd/m ²The maximum current efficient of organic electroluminescence device is 53cd/A, and maximum power efficiency is 54lm/A, and brightness is 1000cd/m ²Efficient be 40lm/W; Organic electroluminescence device shows indigo plant, two kinds of complementary colours of orange are simultaneously luminous, at 1000cd/m ²Brightness under, the chromaticity coordinates of described organic electroluminescence device is (0.35,0.43).

Embodiment 9

The electrode of first ITO on the ito glass is photo-etched into that 4mm is wide, 30mm is long, then with described electrode clean, dry up with nitrogen rear with oxygen plasma treatment 2 minutes; Described electrode is placed on the spin coating instrument, with 3000 turn/the speed PEDOT:PSS that spin coating one deck 30nm is thick on described electrode of min, toasts described electrode 30 minutes under 120 ℃ temperature behind the spin coating 1min as hole injection layer; Then 4 * 10 ^-5The NPB hole transmission layer that vacuum evaporation 50nm is thick on hole injection layer under the Pa pressure, the evaporation rate of NPB are 0.1nm/s; The TCTA electronic barrier layer that vacuum evaporation 5nm is thick on hole transmission layer, the evaporation rate of TCTA are 0.1nm/s; Thick (MDQ) of vacuum evaporation 5nm on electronic barrier layer ₂Ir (acac) is entrained in the red light emitting layer that forms among the TCTA, (MDQ) ₂The evaporation rate of Ir (acac) is 0.16nm/s, with the mass percent of TCTA be 8%; The Ir that vacuum evaporation 3nm is thick on red light emitting layer (ppy) ₃Be entrained in the green light emitting layer that forms among the TCTA, Ir (ppy) ₃Evaporation rate be 0.16nm/s, with the mass percent of TCTA be 8%; The FIrpic that vacuum evaporation 5nm is thick on green light emitting layer is entrained in the blue light-emitting layer that forms among the TCTA, and the evaporation rate of FIrpic is 0.40nm/s, with the mass percent of TCTA be 20%; The TmPyPB hole blocking layer that vacuum evaporation 15nm is thick on blue light-emitting layer, the evaporation rate of TmPyPB are 0.1nm/s; The electronic injection transport layer of the lithium carbonate doping TmPyPB that vacuum evaporation 35nm is thick on hole blocking layer, the evaporation rate of lithium carbonate is 0.003nm/s, the evaporation rate of TmPyPB is 0.1nm/s; The lithium carbonate electron injecting layer that vacuum evaporation 1nm is thick on the electronic injection transport layer, the evaporation rate of lithium carbonate are 0.005nm/s; The Al that vacuum evaporation 100nm is thick on electron injecting layer is as negative electrode, and the evaporation rate of Al is 1nm/s, and obtaining the luminous zone area is 16mm ², white light organic electroluminescent device with following structure:

ITO/PEDOT:PSS(30nm)/NPB(50nm)/TCTA(5nm)/TCTA:(MDQ) ₂Ir(acac)(5nm)/TCTA:Ir(ppy) ₃(3nm)/TCTA:FIrpci(5nm)/TmPyPB(15nm)/TmPyPB:Li ₂CO ₃(35nm)/Li ₂CO ₃(1nm)/Al(100nm)。

Described white light organic electroluminescent device is carried out performance test, the result is referring to Fig. 7, Fig. 8 and Fig. 9, the voltage-to-current density of the white light organic electroluminescent device that Fig. 7 provides for the embodiment of the invention 9-brightness curve figure, as shown in Figure 7, a bright voltage of the organic electroluminescence device of present embodiment preparation is 2.6V, and high-high brightness is 48000cd/m ², the brightness when 3.5V voltage is 1000cd/m ²Current density-the power efficiency of the white light organic electroluminescent device that Fig. 8 provides for the embodiment of the invention 9-current efficiency curve chart, as shown in Figure 8, the maximum current efficient of the organic electroluminescence device that the embodiment of the invention provides is 45cd/A, maximum power efficiency is 55lm/A, and brightness is 1000cd/m ²Efficient be 40lm/W; The wavelength of the white light organic electroluminescent device that Fig. 9 provides for the embodiment of the invention 9 under different voltages-luminous intensity curve chart, as shown in Figure 9, organic electroluminescence device provided by the invention shows indigo plant, green, red three primary colors are simultaneously luminous, at 1000cd/m ²Brightness under, the chromaticity coordinates of described organic electroluminescence device is (0.40,0.46).

Embodiment 10

The electrode of first ITO on the ito glass is photo-etched into that 4mm is wide, 30mm is long, then with described electrode clean, dry up with nitrogen rear with oxygen plasma treatment 2 minutes; Described electrode is placed on the spin coating instrument, with 3000 turn/the speed PEDOT:PSS that spin coating one deck 30nm is thick on described electrode of min, toasts described electrode 30 minutes under 120 ℃ temperature behind the spin coating 1min as hole injection layer; Then 4 * 10 ^-5The NPB hole transmission layer that vacuum evaporation 50nm is thick on hole injection layer under the Pa pressure, the evaporation rate of NPB are 0.1nm/s; The TCTA electronic barrier layer that vacuum evaporation 5nm is thick on hole transmission layer, the evaporation rate of TCTA are 0.1nm/s; Thick (MDQ) of vacuum evaporation 5nm on electronic barrier layer ₂Ir (acac) is entrained in the red light emitting layer that forms among the TCTA, (MDQ) ₂The evaporation rate of Ir (acac) is 0.16nm/s, with the mass percent of TCTA be 8%; The Ir that vacuum evaporation 3nm is thick on red light emitting layer (ppy) ₃Be entrained in the green light emitting layer that forms among the TCTA, Ir (ppy) ₃Evaporation rate be 0.16nm/s, with the mass percent of TCTA be 8%; The FIrpic that vacuum evaporation 5nm is thick on green light emitting layer is entrained in the blue light-emitting layer that forms among the TCTA, and the evaporation rate of FIrpic is 0.30nm/s, with the mass percent of TCTA be 15%; The TmPyPB hole blocking layer that vacuum evaporation 15nm is thick on blue light-emitting layer, the evaporation rate of TmPyPB are 0.1nm/s; The electronic injection transport layer of the lithium carbonate doping TmPyPB that vacuum evaporation 35nm is thick on hole blocking layer, the evaporation rate of lithium carbonate is 0.003nm/s, the evaporation rate of TmPyPB is 0.1nm/s; The lithium carbonate electron injecting layer that vacuum evaporation 1nm is thick on the electronic injection transport layer, the evaporation rate of lithium carbonate are 0.005nm/s; The Al that vacuum evaporation 100nm is thick on electron injecting layer is as negative electrode, and the evaporation rate of Al is 1nm/s, and obtaining the luminous zone area is 16mm ², white light organic electroluminescent device with following structure:

Described white light organic electroluminescent device is carried out performance test, and the result shows that a bright voltage of the organic electroluminescence device of present embodiment preparation is 2.6V, and high-high brightness is 48000cd/m ², the brightness when 3.5V voltage is 1000cd/m ²Maximum current efficient is 45cd/A, and maximum power efficiency is 53lm/A, and brightness is 1000cd/m ²Efficient be 39lm/W; Organic electroluminescence device provided by the invention shows indigo plant, green, red three primary colors are simultaneously luminous, at 1000cd/m ²Brightness under, the chromaticity coordinates of described organic electroluminescence device is (0.39,0.44).

Embodiment 11

The electrode of first ITO on the ito glass is photo-etched into that 4mm is wide, 30mm is long, then with described electrode clean, dry up with nitrogen rear with oxygen plasma treatment 2 minutes; Described electrode is placed on the spin coating instrument, with 3000 turn/the speed PEDOT:PSS that spin coating one deck 30nm is thick on described electrode of min, toasts described electrode 30 minutes under 120 ℃ temperature behind the spin coating 1min as hole injection layer; Then 4 * 10 ^-5The NPB hole transmission layer that vacuum evaporation 50nm is thick on hole injection layer under the Pa pressure, the evaporation rate of NPB are 0.1nm/s; The TCTA electronic barrier layer that vacuum evaporation 5nm is thick on hole transmission layer, the evaporation rate of TCTA are 0.1nm/s; Thick (MDQ) of vacuum evaporation 5nm on electronic barrier layer ₂Ir (acac) is entrained in the red light emitting layer that forms among the TCTA, (MDQ) ₂The evaporation rate of Ir (acac) is 0.16nm/s, with the mass percent of TCTA be 8%; The Ir that vacuum evaporation 3nm is thick on red light emitting layer (ppy) ₃Be entrained in the green light emitting layer that forms among the TCTA, Ir (ppy) ₃Evaporation rate be 0.16nm/s, with the mass percent of TCTA be 8%; The FIrpic that vacuum evaporation 5nm is thick on green light emitting layer is entrained in the blue light-emitting layer that forms among the TCTA, and the evaporation rate of FIrpic is 0.20nm/s, with the mass percent of TCTA be 10%; The TmPyPB hole blocking layer that vacuum evaporation 15nm is thick on blue light-emitting layer, the evaporation rate of TmPyPB are 0.1nm/s; The electronic injection transport layer of the lithium carbonate doping TmPyPB that vacuum evaporation 35nm is thick on hole blocking layer, the evaporation rate of lithium carbonate is 0.003nm/s, the evaporation rate of TmPyPB is 0.1nm/s; The lithium carbonate electron injecting layer that vacuum evaporation 1nm is thick on the electronic injection transport layer, the evaporation rate of lithium carbonate are 0.005nm/s; The Al that vacuum evaporation 100nm is thick on electron injecting layer is as negative electrode, and the evaporation rate of Al is 1nm/s, and obtaining the luminous zone area is 16mm ², white light organic electroluminescent device with following structure:

Described white light organic electroluminescent device is carried out performance test, and the result shows that a bright voltage of the organic electroluminescence device of present embodiment preparation is 2.6V, and high-high brightness is 48000cd/m ², the brightness when 3.5V voltage is 1000cd/m ²Maximum current efficient is 46cd/A, and maximum power efficiency is 52lm/A, and brightness is 1000cd/m ²Efficient be 40lm/W; Organic electroluminescence device provided by the invention shows indigo plant, green, red three primary colors are simultaneously luminous, at 1000cd/m ²Brightness under, the chromaticity coordinates of described organic electroluminescence device is (0.39,0.43).

Embodiment 12

The electrode of first ITO on the ito glass is photo-etched into that 4mm is wide, 30mm is long, then with described electrode clean, dry up with nitrogen rear with oxygen plasma treatment 2 minutes; Described electrode is placed on the spin coating instrument, with 3000 turn/the speed PEDOT:PSS that spin coating one deck 30nm is thick on described electrode of min, toasts described electrode 30 minutes under 120 ℃ temperature behind the spin coating 1min as hole injection layer; Then 4 * 10 ^-5The NPB hole transmission layer that vacuum evaporation 50nm is thick on hole injection layer under the Pa pressure, the evaporation rate of NPB are 0.1nm/s; The TCTA electronic barrier layer that vacuum evaporation 5nm is thick on hole transmission layer, the evaporation rate of TCTA are 0.1nm/s; Thick (MDQ) of vacuum evaporation 5nm on electronic barrier layer ₂Ir (acac) is entrained in the red light emitting layer that forms among the TCTA, (MDQ) ₂The evaporation rate of Ir (acac) is 0.16nm/s, with the mass percent of TCTA be 8%; The Ir that vacuum evaporation 3nm is thick on red light emitting layer (ppy) ₃Be entrained in the green light emitting layer that forms among the TCTA, Ir (ppy) ₃Evaporation rate be 0.16nm/s, with the mass percent of TCTA be 8%; The FIrpic that vacuum evaporation 4.5nm is thick on green light emitting layer is entrained in the blue light-emitting layer that forms among the TCTA, and the evaporation rate of FIrpic is 0.30nm/s, with the mass percent of TCTA be 15%; The TmPyPB hole blocking layer that vacuum evaporation 15nm is thick on blue light-emitting layer, the evaporation rate of TmPyPB are 0.1nm/s; The electronic injection transport layer of the lithium carbonate doping TmPyPB that vacuum evaporation 35nm is thick on hole blocking layer, the evaporation rate of lithium carbonate is 0.003nm/s, the evaporation rate of TmPyPB is 0.1nm/s; The lithium carbonate electron injecting layer that vacuum evaporation 1nm is thick on the electronic injection transport layer, the evaporation rate of lithium carbonate are 0.005nm/s; The Al that vacuum evaporation 100nm is thick on electron injecting layer is as negative electrode, and the evaporation rate of Al is 1nm/s, and obtaining the luminous zone area is 16mm ², white light organic electroluminescent device with following structure:

ITO/PEDOT:PSS(30nm)/NPB(50nm)/TCTA(5nm)/TCTA:(MDQ) ₂Ir(acac)(5nm)/TCTA:Ir(ppy) ₃(3nm)/TCTA:FIrpci(4.5nm)/TmPyPB(15nm)/TmPyPB:Li ₂CO ₃(35nm)/Li ₂CO ₃(1nm)/Al(100nm)。

Described white light organic electroluminescent device is carried out performance test, and the result shows that a bright voltage of the organic electroluminescence device of present embodiment preparation is 2.6V, and high-high brightness is 48000cd/m ², the brightness when 3.5V voltage is 1000cd/m ²Maximum current efficient is 46cd/A, and maximum power efficiency is 53lm/A, and brightness is 1000cd/m ²Efficient be 39lm/W; Organic electroluminescence device provided by the invention shows indigo plant, green, red three primary colors are simultaneously luminous, at 1000cd/m ²Brightness under, the chromaticity coordinates of described organic electroluminescence device is (0.38,0.45).

Embodiment 13

The electrode of first ITO on the ito glass is photo-etched into that 4mm is wide, 30mm is long, then with described electrode clean, dry up with nitrogen rear with oxygen plasma treatment 2 minutes; Described electrode is placed on the spin coating instrument, with 3000 turn/the speed PEDOT:PSS that spin coating one deck 30nm is thick on described electrode of min, toasts described electrode 30 minutes under 120 ℃ temperature behind the spin coating 1min as hole injection layer; Then 4 * 10 ^-5The NPB hole transmission layer that vacuum evaporation 50nm is thick on hole injection layer under the Pa pressure, the evaporation rate of NPB are 0.1nm/s; The TCTA electronic barrier layer that vacuum evaporation 5nm is thick on hole transmission layer, the evaporation rate of TCTA are 0.1nm/s; Thick (MDQ) of vacuum evaporation 5nm on electronic barrier layer ₂Ir (acac) is entrained in the red light emitting layer that forms among the TCTA, (MDQ) ₂The evaporation rate of Ir (acac) is 0.16nm/s, with the mass percent of TCTA be 8%; The Ir that vacuum evaporation 2.5nm is thick on red light emitting layer (ppy) ₃Be entrained in the green light emitting layer that forms among the TCTA, Ir (ppy) ₃Evaporation rate be 0.16nm/s, with the mass percent of TCTA be 8%; The FIrpic that vacuum evaporation 5nm is thick on green light emitting layer is entrained in the blue light-emitting layer that forms among the TCTA, and the evaporation rate of FIrpic is 0.30nm/s, with the mass percent of TCTA be 15%; The TmPyPB hole blocking layer that vacuum evaporation 15nm is thick on blue light-emitting layer, the evaporation rate of TmPyPB are 0.1nm/s; The electronic injection transport layer of the lithium carbonate doping TmPyPB that vacuum evaporation 35nm is thick on hole blocking layer, the evaporation rate of lithium carbonate is 0.003nm/s, the evaporation rate of TmPyPB is 0.1nm/s; The lithium carbonate electron injecting layer that vacuum evaporation 1nm is thick on the electronic injection transport layer, the evaporation rate of lithium carbonate are 0.005nm/s; The Al that vacuum evaporation 100nm is thick on electron injecting layer is as negative electrode, and the evaporation rate of Al is 1nm/s, and obtaining the luminous zone area is 16mm ², white light organic electroluminescent device with following structure:

ITO/PEDOT:PSS(30nm)/NPB(50nm)/TCTA(5nm)/TCTA:(MDQ) ₂Ir(acac)(5nm)/TCTA:Ir(ppy) ₃(2.5nm)/TCTA:FIrpci(5nm)/TmPyPB(15nm)/TmPyPB:Li ₂CO ₃(35nm)/Li ₂CO ₃(1nm)/Al(100nm)。

Described white light organic electroluminescent device is carried out performance test, and the result shows that a bright voltage of the organic electroluminescence device of present embodiment preparation is 2.6V, and high-high brightness is 48000cd/m ², the brightness when 3.5V voltage is 1000cd/m ²Maximum current efficient is 46cd/A, and maximum power efficiency is 54lm/A, and brightness is 1000cd/m ²Efficient be 40lm/W; Organic electroluminescence device provided by the invention shows indigo plant, green, red three primary colors are simultaneously luminous, at 1000cd/m ²Brightness under, the chromaticity coordinates of described organic electroluminescence device is (0.38,0.43).

Embodiment 14

The electrode of first ITO on the ito glass is photo-etched into that 4mm is wide, 30mm is long, then with described electrode clean, dry up with nitrogen rear with oxygen plasma treatment 2 minutes; Described electrode is placed on the spin coating instrument, with 3000 turn/the speed PEDOT:PSS that spin coating one deck 30nm is thick on described electrode of min, toasts described electrode 30 minutes under 120 ℃ temperature behind the spin coating 1min as hole injection layer; Then 4 * 10 ^-5The NPB hole transmission layer that vacuum evaporation 50nm is thick on hole injection layer under the Pa pressure, the evaporation rate of NPB are 0.1nm/s; The TCTA electronic barrier layer that vacuum evaporation 5nm is thick on hole transmission layer, the evaporation rate of TCTA are 0.1nm/s; Thick (MDQ) of vacuum evaporation 5nm on electronic barrier layer ₂Ir (acac) is entrained in the red light emitting layer that forms among the TCTA, (MDQ) ₂The evaporation rate of Ir (acac) is 0.16nm/s, with the mass percent of TCTA be 8%; The Ir that vacuum evaporation 2.5nm is thick on red light emitting layer (ppy) ₃Be entrained in the green light emitting layer that forms among the TCTA, Ir (ppy) ₃Evaporation rate be 0.16nm/s, with the mass percent of TCTA be 8%; The FIrpic that vacuum evaporation 4.5nm is thick on green light emitting layer is entrained in the blue light-emitting layer that forms among the TCTA, and the evaporation rate of FIrpic is 0.30nm/s, with the mass percent of TCTA be 15%; The TmPyPB hole blocking layer that vacuum evaporation 15nm is thick on blue light-emitting layer, the evaporation rate of TmPyPB are 0.1nm/s; The electronic injection transport layer of the lithium carbonate doping TmPyPB that vacuum evaporation 35nm is thick on hole blocking layer, the evaporation rate of lithium carbonate is 0.003nm/s, the evaporation rate of TmPyPB is 0.1nm/s; The lithium carbonate electron injecting layer that vacuum evaporation 1nm is thick on the electronic injection transport layer, the evaporation rate of lithium carbonate are 0.005nm/s; The Al that vacuum evaporation 100nm is thick on electron injecting layer is as negative electrode, and the evaporation rate of Al is 1nm/s, and obtaining the luminous zone area is 16mm ², white light organic electroluminescent device with following structure:

ITO/PEDOT:PSS(30nm)/NPB(50nm)/TCTA(5nm)/TCTA:(MDQ) ₂Ir(acac)(5nm)/TCTA:Ir(ppy) ₃(2.5nm)/TCTA:FIrpci(4.5nm)/TmPyPB(15nm)/TmPyPB:Li ₂CO ₃(35nm)/Li ₂CO ₃(1nm)/Al(100nm)。

Described white light organic electroluminescent device is carried out performance test, and the result shows that a bright voltage of the organic electroluminescence device of present embodiment preparation is 2.6V, and high-high brightness is 48000cd/m ², the brightness when 3.5V voltage is 1000cd/m ²Maximum current efficient is 50cd/A, and maximum power efficiency is 52lm/A, and brightness is 1000cd/m ²Efficient be 38lm/W; Organic electroluminescence device provided by the invention shows indigo plant, green, red three primary colors are simultaneously luminous, at 1000cd/m ²Brightness under, the chromaticity coordinates of described organic electroluminescence device is (0.39,0.45).

Embodiment 15

The electrode of first ITO on the ito glass is photo-etched into that 4mm is wide, 30mm is long, then with described electrode clean, dry up with nitrogen rear with oxygen plasma treatment 2 minutes; Described electrode is placed on the spin coating instrument, with 3000 turn/the speed PEDOT:PSS that spin coating one deck 30nm is thick on described electrode of min, toasts described electrode 30 minutes under 120 ℃ temperature behind the spin coating 1min as hole injection layer; Then 4 * 10 ^-5The NPB hole transmission layer that vacuum evaporation 50nm is thick on hole injection layer under the Pa pressure, the evaporation rate of NPB are 0.1nm/s; The TCTA electronic barrier layer that vacuum evaporation 5nm is thick on hole transmission layer, the evaporation rate of TCTA are 0.1nm/s; Thick (MDQ) of vacuum evaporation 5nm on electronic barrier layer ₂Ir (acac) is entrained in the red light emitting layer that forms among the TCTA, (MDQ) ₂The evaporation rate of Ir (acac) is 0.16nm/s, with the mass percent of TCTA be 8%; The Ir that vacuum evaporation 3nm is thick on red light emitting layer (ppy) ₂(acac) be entrained in the green light emitting layer that forms among the TCTA, Ir (ppy) ₂(acac) evaporation rate is 0.16nm/s, with the mass percent of TCTA be 8%; The FIrpic that vacuum evaporation 5nm is thick on green light emitting layer is entrained in the blue light-emitting layer that forms among the TCTA, and the evaporation rate of FIrpic is 0.20nm/s, with the mass percent of TCTA be 10%; The TmPyPB hole blocking layer that vacuum evaporation 15nm is thick on blue light-emitting layer, the evaporation rate of TmPyPB are 0.1nm/s; The electronic injection transport layer of the lithium carbonate doping TmPyPB that vacuum evaporation 35nm is thick on hole blocking layer, the evaporation rate of lithium carbonate is 0.003nm/s, the evaporation rate of TmPyPB is 0.1nm/s; The lithium carbonate electron injecting layer that vacuum evaporation 1nm is thick on the electronic injection transport layer, the evaporation rate of lithium carbonate are 0.005nm/s; The Al that vacuum evaporation 100nm is thick on electron injecting layer is as negative electrode, and the evaporation rate of Al is 1nm/s, and obtaining the luminous zone area is 16mm ², white light organic electroluminescent device with following structure:

ITO/PEDOT:PSS(30nm)/NPB(50nm)/TCTA(5nm)/TCTA:(MDQ) ₂Ir(acac)(5nm)/TCTA:Ir(ppy) ₂(acac)(3nm)/TCTA:FIrpci(5nm)/TmPyPB(15nm)/TmPyPB:Li ₂CO ₃(35nm)/Li ₂CO ₃(1nm)/Al(100nm)。

Described white light organic electroluminescent device is carried out performance test, and the result shows that a bright voltage of the organic electroluminescence device of present embodiment preparation is 2.6V, and high-high brightness is 48000cd/m ², the brightness when 3.5V voltage is 1000cd/m ²Maximum current efficient is 48cd/A, and maximum power efficiency is 52lm/A, and brightness is 1000cd/m ²Efficient be 37lm/W; Organic electroluminescence device provided by the invention shows indigo plant, green, red three primary colors are simultaneously luminous, at 1000cd/m ²Brightness under, the chromaticity coordinates of described organic electroluminescence device is (0.37,0.44).

Embodiment 16

The electrode of first ITO on the ito glass is photo-etched into that 4mm is wide, 30mm is long, then with described electrode clean, dry up with nitrogen rear with oxygen plasma treatment 2 minutes; Described electrode is placed on the spin coating instrument, with 3000 turn/the speed PEDOT:PSS that spin coating one deck 30nm is thick on described electrode of min, toasts described electrode 30 minutes under 120 ℃ temperature behind the spin coating 1min as hole injection layer; Then 4 * 10 ^-5The NPB hole transmission layer that vacuum evaporation 50nm is thick on hole injection layer under the Pa pressure, the evaporation rate of NPB are 0.1nm/s; The TCTA electronic barrier layer that vacuum evaporation 5nm is thick on hole transmission layer, the evaporation rate of TCTA are 0.1nm/s; Thick (MDQ) of vacuum evaporation 5nm on electronic barrier layer ₂Ir (acac) is entrained in the red light emitting layer that forms among the TCTA, (MDQ) ₂The evaporation rate of Ir (acac) is 0.16nm/s, with the mass percent of TCTA be 8%; The Ir that vacuum evaporation 3nm is thick on red light emitting layer (ppy) ₂(acac) be entrained in the green light emitting layer that forms among the TCTA, Ir (ppy) ₂(acac) evaporation rate is 0.16nm/s, with the mass percent of TCTA be 8%; The FIrpic that vacuum evaporation 4.5nm is thick on green light emitting layer is entrained in the blue light-emitting layer that forms among the TCTA, and the evaporation rate of FIrpic is 0.30nm/s, with the mass percent of TCTA be 15%; The TmPyPB hole blocking layer that vacuum evaporation 15nm is thick on blue light-emitting layer, the evaporation rate of TmPyPB are 0.1nm/s; The electronic injection transport layer of the lithium carbonate doping TmPyPB that vacuum evaporation 35nm is thick on hole blocking layer, the evaporation rate of lithium carbonate is 0.003nm/s, the evaporation rate of TmPyPB is 0.1nm/s; The lithium carbonate electron injecting layer that vacuum evaporation 1nm is thick on the electronic injection transport layer, the evaporation rate of lithium carbonate are 0.005nm/s; The Al that vacuum evaporation 100nm is thick on electron injecting layer is as negative electrode, and the evaporation rate of Al is 1nm/s, and obtaining the luminous zone area is 16mm ², white light organic electroluminescent device with following structure:

ITO/PEDOT:PSS(30nm)/NPB(50nm)/TCTA(5nm)/TCTA:(MDQ) ₂Ir(acac)(5nm)/TCTA:Ir(ppy) ₂(acac)(3nm)/TCTA:FIrpci(4.5nm)/TmPyPB(15nm)/TmPyPB:Li ₂CO ₃(35nm)/Li ₂CO ₃(1nm)/Al(100nm)。

Described white light organic electroluminescent device is carried out performance test, and the result shows that a bright voltage of the organic electroluminescence device of present embodiment preparation is 2.6V, and high-high brightness is 48000cd/m ², the brightness when 3.5V voltage is 1000cd/m ²Maximum current efficient is 50cd/A, and maximum power efficiency is 55lm/A, and brightness is 1000cd/m ²Efficient be 40lm/W; Organic electroluminescence device provided by the invention shows indigo plant, green, red three primary colors are simultaneously luminous, at 1000cd/m ²Brightness under, the chromaticity coordinates of described organic electroluminescence device is (0.40,0.44).

Embodiment 17

The electrode of first ITO on the ito glass is photo-etched into that 4mm is wide, 30mm is long, then with described electrode clean, dry up with nitrogen rear with oxygen plasma treatment 2 minutes; Described electrode is placed on the spin coating instrument, with 3000 turn/the speed PEDOT:PSS that spin coating one deck 30nm is thick on described electrode of min, toasts described electrode 30 minutes under 120 ℃ temperature behind the spin coating 1min as hole injection layer; Then 4 * 10 ^-5The NPB hole transmission layer that vacuum evaporation 50nm is thick on hole injection layer under the Pa pressure, the evaporation rate of NPB are 0.1nm/s; The TCTA electronic barrier layer that vacuum evaporation 5nm is thick on hole transmission layer, the evaporation rate of TCTA are 0.1nm/s; Thick (MDQ) of vacuum evaporation 5nm on electronic barrier layer ₂Ir (acac) is entrained in the red light emitting layer that forms among the TCTA, (MDQ) ₂The evaporation rate of Ir (acac) is 0.16nm/s, with the mass percent of TCTA be 8%; The Ir that vacuum evaporation 2.5nm is thick on red light emitting layer (ppy) ₂(acac) be entrained in the green light emitting layer that forms among the TCTA, Ir (ppy) ₂(acac) evaporation rate is 0.16nm/s, with the mass percent of TCTA be 8%; The FIrpic that vacuum evaporation 5nm is thick on green light emitting layer is entrained in the blue light-emitting layer that forms among the TCTA, and the evaporation rate of FIrpic is 0.30nm/s, with the mass percent of TCTA be 15%; The TmPyPB hole blocking layer that vacuum evaporation 15nm is thick on blue light-emitting layer, the evaporation rate of TmPyPB are 0.1nm/s; The electronic injection transport layer of the lithium carbonate doping TmPyPB that vacuum evaporation 35nm is thick on hole blocking layer, the evaporation rate of lithium carbonate is 0.003nm/s, the evaporation rate of TmPyPB is 0.1nm/s; The lithium carbonate electron injecting layer that vacuum evaporation 1nm is thick on the electronic injection transport layer, the evaporation rate of lithium carbonate are 0.005nm/s; The Al that vacuum evaporation 100nm is thick on electron injecting layer is as negative electrode, and the evaporation rate of Al is 1nm/s, and obtaining the luminous zone area is 16mm ², white light organic electroluminescent device with following structure:

ITO/PEDOT:PSS(30nm)/NPB(50nm)/TCTA(5nm)/TCTA:(MDQ) ₂Ir(acac)(5nm)/TCTA:Ir(ppy) ₂(acac)(2.5nm)/TCTA:FIrpci(5nm)/TmPyPB(15nm)/TmPyPB:Li ₂CO ₃(35nm)/Li ₂CO ₃(1nm)/Al(100nm)。

Described white light organic electroluminescent device is carried out performance test, and the result shows that a bright voltage of the organic electroluminescence device of present embodiment preparation is 2.6V, and high-high brightness is 48000cd/m ², the brightness when 3.5V voltage is 1000cd/m ²Maximum current efficient is 51cd/A, and maximum power efficiency is 56lm/A, and brightness is 1000cd/m ²Efficient be 40lm/W; Organic electroluminescence device provided by the invention shows indigo plant, green, red three primary colors are simultaneously luminous, at 1000cd/m ²Brightness under, the chromaticity coordinates of described organic electroluminescence device is (0.38,0.44).

Embodiment 18

The electrode of first ITO on the ito glass is photo-etched into that 4mm is wide, 30mm is long, then with described electrode clean, dry up with nitrogen rear with oxygen plasma treatment 2 minutes; Described electrode is placed on the spin coating instrument, with 3000 turn/the speed PEDOT:PSS that spin coating one deck 30nm is thick on described electrode of min, toasts described electrode 30 minutes under 120 ℃ temperature behind the spin coating 1min as hole injection layer; Then 4 * 10 ^-5The NPB hole transmission layer that vacuum evaporation 50nm is thick on hole injection layer under the Pa pressure, the evaporation rate of NPB are 0.1nm/s; The TCTA electronic barrier layer that vacuum evaporation 5nm is thick on hole transmission layer, the evaporation rate of TCTA are 0.1nm/s; Thick (MDQ) of vacuum evaporation 5nm on electronic barrier layer ₂Ir (acac) is entrained in the red light emitting layer that forms among the TCTA, (MDQ) ₂The evaporation rate of Ir (acac) is 0.16nm/s, with the mass percent of TCTA be 8%; The Ir that vacuum evaporation 2.5nm is thick on red light emitting layer (ppy) ₂(acac) be entrained in the green light emitting layer that forms among the TCTA, Ir (ppy) ₂(acac) evaporation rate is 0.16nm/s, with the mass percent of TCTA be 8%; The FIrpic that vacuum evaporation 4.5nm is thick on green light emitting layer is entrained in the blue light-emitting layer that forms among the TCTA, and the evaporation rate of FIrpic is 0.30nm/s, with the mass percent of TCTA be 15%; The TmPyPB hole blocking layer that vacuum evaporation 15nm is thick on blue light-emitting layer, the evaporation rate of TmPyPB are 0.1nm/s; The electronic injection transport layer of the lithium carbonate doping TmPyPB that vacuum evaporation 35nm is thick on hole blocking layer, the evaporation rate of lithium carbonate is 0.003nm/s, the evaporation rate of TmPyPB is 0.1nm/s; The lithium carbonate electron injecting layer that vacuum evaporation 1nm is thick on the electronic injection transport layer, the evaporation rate of lithium carbonate are 0.005nm/s; The Al that vacuum evaporation 100nm is thick on electron injecting layer is as negative electrode, and the evaporation rate of Al is 1nm/s, and obtaining the luminous zone area is 16mm ², white light organic electroluminescent device with following structure:

ITO/PEDOT:PSS(30nm)/NPB(50nm)/TCTA(5nm)/TCTA:(MDQ) ₂Ir(acac)(5nm)/TCTA:Ir(ppy) ₂(acac)(2.5nm)/TCTA:FIrpci(4.5nm)/TmPyPB(15nm)/TmPyPB:Li ₂CO ₃(35nm)/Li ₂CO ₃(1nm)/Al(100nm)。

Described white light organic electroluminescent device is carried out performance test, and the result shows that a bright voltage of the organic electroluminescence device of present embodiment preparation is 2.6V, and high-high brightness is 48000cd/m ², the brightness when 3.5V voltage is 1000cd/m ²Maximum current efficient is 49cd/A, and maximum power efficiency is 52lm/A, and brightness is 1000cd/m ²Efficient be 40lm/W; Organic electroluminescence device provided by the invention shows indigo plant, green, red three primary colors are simultaneously luminous, at 1000cd/m ²Brightness under, the chromaticity coordinates of described organic electroluminescence device is (0.39,0.43).

Comparative Examples 1

The TmPyPB film preparation that 200nm is thick becomes single-electron device, and it is carried out performance test, the result is referring to the curve b among Fig. 3, the voltage-to-current densogram of the electron transport material that Fig. 3 provides for the embodiment of the invention, curve b is the voltage-to-current density curve of TmPyPB film, as shown in Figure 3, the current density of TmPyPB film under 10V voltage can only reach 10 ^-1MA/cm ²

The used TmPyPB of above-described embodiment and Comparative Examples is all available from the LuminescenceTechnology Corp. in Taiwan.

The explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection range of claim of the present invention.

Claims

1. an organic electroluminescence device is characterized in that, comprising:

Substrate;

At described substrate the first electrode layer is arranged;

At described the first electrode layer one or more layers organic electro luminescent layer is arranged, described organic electro luminescent layer is entrained in 4 by the organophosphor photoinitiator dye, 4', 4 " three (N-carbazole) triphenylamine or 1; composite material that forms in the 3 two carbazyl benzene consists of, described organophosphor photoinitiator dye and 4,4'; 4 " the mass ratio of-three (N-carbazole) triphenylamines or 1,3 two carbazyl benzene is 0.75%-20%;

In described organic electro luminescent layer the electronic injection transport layer is arranged, described electronic injection transport layer is by Li ₂CO ₃Be entrained in the electron transport material that forms in 1,3,5-three [(3-the pyridine radicals)-3-phenyl] benzene and consist of described Li ₂CO ₃With the mass ratio of 1,3,5-three [(3-pyridine radicals)-3-phenyl] benzene be 0.02-0.1:1;

2. organic electroluminescence device according to claim 1 is characterized in that, also comprises hole injection layer between described the first electrode layer and described organic electro luminescent layer.

3. organic electroluminescence device according to claim 2 is characterized in that, described hole injection layer is made of poly-3,4-rthylene dioxythiophene-polystyrolsulfon acid.

4. organic electroluminescence device according to claim 2 is characterized in that, also comprises hole transmission layer and/or electronic barrier layer between described hole injection layer and described organic electro luminescent layer.

5. organic electroluminescence device according to claim 1 is characterized in that, also comprises hole blocking layer between described organic electro luminescent layer and described electronic injection transport layer.

6. organic electroluminescence device according to claim 5 is characterized in that, described hole blocking layer is made of 1,3,5-three [(3-pyridine radicals)-3-phenyl] benzene.

7. organic electroluminescence device according to claim 1 is characterized in that, also comprises electron injecting layer between described electronic injection transport layer and described the second electrode lay.

8. the preparation method of an organic electroluminescence device is characterized in that, comprising:

Form the first electrode at substrate;

Form one or more layers organic electro luminescent layer at described the first electrode, described organic electro luminescent layer is entrained in 4 by the organophosphor photoinitiator dye, 4', 4 " three (N-carbazole) triphenylamine or 1; composite material that forms in the 3 two carbazyl benzene consists of, described organophosphor photoinitiator dye and 4,4'; 4 " the mass ratio of-three (N-carbazole) triphenylamines or 1,3 two carbazyl benzene is 0.75%-20%;

Form the electronic injection transport layer in described organic electro luminescent layer, described electronic injection transport layer is by Li ₂CO ₃Be entrained in the electron transport material that forms in 1,3,5-three [(3-the pyridine radicals)-3-phenyl] benzene and consist of described Li ₂CO ₃With the mass ratio of 1,3,5-three [(3-pyridine radicals)-3-phenyl] benzene be 0.02-0.1:1;

Form the second electrode at described electron transfer layer.