CN104183706A - Organic electroluminescent device and preparation method thereof - Google Patents

Organic electroluminescent device and preparation method thereof Download PDF

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Publication number
CN104183706A
CN104183706A CN201310189877.5A CN201310189877A CN104183706A CN 104183706 A CN104183706 A CN 104183706A CN 201310189877 A CN201310189877 A CN 201310189877A CN 104183706 A CN104183706 A CN 104183706A
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layer
luminescence unit
substrate
thickness
negative electrode
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周明杰
冯小明
陈吉星
王平
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Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Engineering Co Ltd
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Oceans King Lighting Science and Technology Co Ltd
Shenzhen Oceans King Lighting Engineering Co Ltd
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Priority to CN201310189877.5A priority Critical patent/CN104183706A/en
Publication of CN104183706A publication Critical patent/CN104183706A/en
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    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
    • H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/841—Self-supporting sealing arrangements
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K50/00—Organic light-emitting devices
    • H10K50/80—Constructional details
    • H10K50/84—Passivation; Containers; Encapsulations
    • H10K50/842—Containers
    • H10K50/8428—Vertical spacers, e.g. arranged between the sealing arrangement and the OLED
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K71/00—Manufacture or treatment specially adapted for the organic devices covered by this subclass
    • H—ELECTRICITY
    • H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
    • H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
    • H10K85/00—Organic materials used in the body or electrodes of devices covered by this subclass
    • H10K85/30—Coordination compounds
    • H10K85/341—Transition metal complexes, e.g. Ru(II)polypyridine complexes
    • H10K85/342—Transition metal complexes, e.g. Ru(II)polypyridine complexes comprising iridium

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  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

The invention provides an organic electroluminescent device which comprises the components of: a first light emitting unit set, a second light emitting unit set, and a transparent separating layer which is arranged therebetween. The first light emitting unit set comprises a first substrate and a first light emitting unit arranged on the first substrate. A first closed space is formed by the first substrate and the transparent separating layer through adhesive. The first light emitting unit is accommodated in the first closed space. The second light emitting unit set comprises a second substrate, a second light emitting unit and a third light emitting unit; wherein second light emitting unit and the third light emitting unit which are separated by a separating column. The second light emitting unit and the third light emitting unit are accommodated in a second closed space which is formed by the second substrate and the transparent separating layer through the adhesive. The organic electroluminescent device comprises two organic electroluminescent light emitting unit sets and is composed of three light emitting units which respectively emit green light, blue light and red light. Finally stable white light emission can be obtained. The invention further provides a preparation method for the organic electroluminescent device.

Description

A kind of organic electroluminescence device and preparation method thereof
Technical field
The present invention relates to organic electroluminescence device, be specifically related to a kind of organic electroluminescence device and preparation method thereof.
Background technology
Organic electroluminescent (Organic Light Emission Diode, hereinafter to be referred as OLED), have that brightness is high, material range of choice is wide, driving voltage is low, entirely solidify the characteristics such as active illuminating, have high definition, wide viewing angle simultaneously, and the advantage such as fast response time, be a kind of Display Technique and light source that has potentiality, meet the development trend that information age mobile communication and information show, and the requirement of green lighting technique, be current lot of domestic and foreign researcher's focal point.
The OLED major part of prior art can only go out light from a side-draw of anode or negative electrode, make end transmitting or top transmitting OLED device.The OLED device that the double-side of some researcher's inventions shows, adopt two OLED luminescence units simultaneously, by adhesive, fit together back-to-back, such structure more complicated that becomes, the processing procedure of package unit is also many, makes the weight of OLED device become heavy simultaneously.In addition, for realizing the OLED light-emitting device of white light emission, the OLED of this double-side means need to be simultaneously by multicolor luminous layer, as red, indigo plant, the green luminescent material that waits carries out reasonable disposition, easily exists energy between each luminescent layer to shift, make glow color unstable, be difficult to all once controlling.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of organic electroluminescence device and preparation method thereof.This organic electroluminescence device comprises two independently organic electroluminescence cells, the mixed light of a red-emitting and orange light, the mixed light of transmitting green light and blue light; Two luminescence units can be luminous photochromic by drive unit control separately respectively, and two luminescence units are separated by transparent spacer layer, when energising is not used, can present higher transmitance, energy transmitting white when energising is used, and white light is photochromic stable, and luminous efficiency is high.
First aspect, the invention provides a kind of organic electroluminescence device, comprise the first luminescence unit group and the second luminescence unit group, and be arranged on the transparent spacer layer between described the first luminescence unit group and the second luminescence unit group, described the first luminescence unit group comprises first substrate and is arranged on the first luminescence unit on described first substrate, described first substrate forms the first enclosure space by binding agent and described transparent spacer layer, described the first luminescence unit is contained in described the first enclosure space, described the first luminescence unit comprises the first anode being cascading on described first substrate surface, the first hole injection layer, the first hole transmission layer, green luminescence layer, the first electron transfer layer, the first electron injecting layer and the first negative electrode,
Described the second luminescence unit group comprises second substrate and is arranged side by side the second luminescence unit and the 3rd luminescence unit on described second substrate, described the second luminescence unit and described the 3rd luminescence unit are spaced apart by being arranged on the insulated column on described second substrate surface, described second substrate forms the second enclosure space by binding agent and described transparent spacer layer, described insulated column is separated into the first receiving space and the second receiving space by described the second enclosure space, described the second luminescence unit is contained in described the first receiving space, described the 3rd luminescence unit is contained in described the second receiving space, described the second luminescence unit comprises the second plate being cascading on described second substrate surface, the second hole injection layer, the second hole transmission layer, blue light-emitting, the second electron transfer layer, the second electron injecting layer and the second negative electrode, described the 3rd luminescence unit comprises third anode, the 3rd hole injection layer, the 3rd hole transmission layer, red light luminescent layer, the 3rd electron transfer layer, the 3rd electron injecting layer and the 3rd negative electrode being cascading on described second substrate surface.
Preferably, the material of described green luminescence layer is the composite material that fluorescence luminescent material or green glow material of main part Doping Phosphorus luminescent material form, and described fluorescence luminescent material is 2,3,6,7-tetrahydrochysene-1,1,7,7-tetramethyl-1H, 5H, 11H-10-(2-[4-morpholinodithio base)-quinolizino [9,9A, 1GH] cumarin (C545T), (oxine)-aluminium (Alq 3) and dimethylquinacridone (DMQA) in a kind of, described green glow material of main part is 4,4 ', 4 ' '-tri-(carbazole-9-yl)-triphenylamine (TCTA) or 1,3,5-tri-(1-phenyl-1H-benzimidazolyl-2 radicals-yl) benzene (TPBi), described phosphor material is acetopyruvic acid two (2-phenylpyridine) iridium (Ir (ppy) 2 (acac)), three (2-phenylpyridines) close iridium (Ir (ppy) 3) or three [2-(p-methylphenyl) pyridines] close iridium (III) (Ir (mppy) 3), the doping mass fraction of described phosphor material is 5～20%.
Preferably, the material of described blue light-emitting is the composite material that Blue-light emitting host material Doping Phosphorus luminescent material forms, and described Blue-light emitting host material is 1,3,5-tri-(1-phenyl-1H-benzimidazolyl-2 radicals-yl) benzene (TPBi) or 4,4'-bis-(9-carbazole) biphenyl (CBP); Described phosphor material is that two (4,6-difluorophenyl pyridine-N, C2) pyridine formyls close iridium (FIrpic) or two (4,6-difluorophenyl pyridines)-tetra-(1-pyrazolyl) boric acid closes iridium (FIr6), and the doping mass fraction of described phosphor material is 2～20%.
Preferably, the material of described red light luminescent layer is 4-(dintrile methyl)-2-butyl-6-(1,1,7,7-tetramethyl Lip river of a specified duration pyridine-9-vinyl)-4H-pyrans (DCJTB) is entrained in oxine aluminium (Alq 3) the middle composite material forming, (acetylacetone,2,4-pentanedione) closes iridium (Ir (MDQ) 2 (acac)) and is entrained in N, N'-diphenyl-N, N'-bis-(1-naphthyl)-1,1'-biphenyl-4, the composite material forming in 4'-diamines (NPB), three (1-phenyl-isoquinolin) close iridium (Ir (piq) 3) be entrained in N, N'-diphenyl-N, N'-bis-(1-naphthyl)-1,1'-biphenyl-4, the composite material forming in 4'-diamines (NPB), or two (2-(benzo [b] thiophene-2-yl) pyridine) (acetylacetone,2,4-pentanedione) (Ir (btp) 2 (acac)) closes iridium and is entrained in the composite material forming in 4,4'-bis-(9-carbazole) biphenyl (CBP), and doping mass fraction is 1～20%.
Preferably, the thickness of described green luminescence layer is 10～30nm; The thickness of described red light luminescent layer is 1～20nm; The thickness of described blue light-emitting is 5～20nm.
The material of described insulated column is inorganic oxide or nitride.
Preferably, the material of described insulated column is silicon dioxide, titanium dioxide or silicon nitride.
Preferably, the height of insulated column is equal to or less than the thickness of the second luminescence unit and the 3rd luminescence unit.
Preferably, described the second luminescence unit is 0.2～5:1 with the ratio of the area of the 3rd luminescence unit.More preferably, described the second luminescence unit is 1:1 with the ratio of the area of the 3rd luminescence unit.
The area summation of described the second luminescence unit and the 3rd luminescence unit is slightly less than the area of the first luminescence unit.
Preferably, described transparent spacer layer is conventional clear glass, flexible clear materials layer or transparent insulation coating.The transmitance >80% at visible ray of transparent spacer layer.The effect of separator is mainly that two OLED structures are isolated, so that independent, controls.
Preferably, described flexible clear materials layer is PETG (PET) film.
Preferably, described transparent insulation coating is the transparent UV gel coating of photocuring.
Preferably, the thickness of described transparent spacer layer is 0.05～2mm.
Preferably, described first substrate and second substrate are conventional clear glass substrate, and thickness is 0.2～2mm.
Preferably, the material of the described first anode, second plate and third anode is transparent conductive oxide film.
Preferably, described transparent conductive oxide film is indium and tin oxide film (ITO), indium-zinc oxide (IZO), aluminium zinc oxide (AZO) or gallium zinc oxide (GZO).Preferably, the thickness of described transparent conductive oxide film is 70～200nm.
Preferably, the material of described the first hole injection layer, the second hole injection layer and the 3rd hole injection layer is all selected from CuPc (CuPc), Phthalocyanine Zinc (ZnPc), ranadylic phthalocyanine (VOPc), a kind of in TiOPc (TiOPc) and phthalocyanine platinum (PtPc).Preferably, the thickness of described the first hole injection layer, the second hole injection layer and the 3rd hole injection layer is 10～30nm.More preferably, the material of the first hole injection layer, the second hole injection layer and the 3rd hole injection layer is all selected from CuPc (CuPc), and thickness is 20nm.
Preferably, the material of described the first hole transmission layer, the second hole transmission layer and the 3rd hole transmission layer is all selected from 4,4', 4''-tri-(2-naphthyl phenyl amino) triphenylamine (2-TNATA), N, N'-diphenyl-N, N'-bis-(1-naphthyl)-1,1'-biphenyl-4,4'-diamines (NPB), (4,4', 4''-tri-(N-3-aminomethyl phenyl-N-phenyl amino) triphenylamine (m-MTDATA), N, N'-diphenyl-N, N'-bis-(3-aminomethyl phenyl)-1,1'-biphenyl-4,4'-diamines (TPD) and 4,4', a kind of in 4''-tri-(carbazole-9-yl) triphenylamine (TCTA).Preferably, the thickness of described the first hole transmission layer, the second hole transmission layer and the 3rd hole transmission layer is 10～60nm.
More preferably, the material of described the first hole transmission layer, the second hole transmission layer and the 3rd hole transmission layer is all selected from N, N'-diphenyl-N, and N'-bis-(1-naphthyl)-1,1'-biphenyl-4,4'-diamines (NPB), thickness is 30nm.
Preferably, the material of described the first electron transfer layer, the second electron transfer layer and the 3rd electron transfer layer is all selected from 2-(4-xenyl)-5-(4-the tert-butyl group) phenyl-1,3,4-oxadiazole (PBD), 4,7-diphenyl-o-phenanthroline (Bphen), 1,3,5-tri-(1-phenyl-1H-benzimidazolyl-2 radicals-yl) benzene (TPBi), 2,9-dimethyl-4,7-biphenyl-1, a kind of in 10-phenanthrolene (BCP) and 1,2,4-triazole derivative (TAZ).Preferably, the thickness of described the first electron transfer layer, the second electron transfer layer and the 3rd electron transfer layer is 20～60nm.
More preferably, the material of described the first electron transfer layer, the second electron transfer layer and the 3rd electron transfer layer is all selected from 1,3,5-tri-(1-phenyl-1H-benzimidazolyl-2 radicals-yl) benzene (TPBi), and thickness is 30nm.
Preferably, the material of described the first electron injecting layer, the second electron injecting layer and the 3rd electron injecting layer is all selected from a kind of in lithium fluoride (LiF) and cesium fluoride (CsF).Preferably, the thickness of described the first electron injecting layer, the second electron injecting layer and the 3rd electron injecting layer is 0.5～1nm.More preferably, the material of the first electron injecting layer, the second electron injecting layer and the 3rd electron injecting layer is all selected from lithium fluoride (LiF), and thickness is 1nm.
Preferably, the material of described the first negative electrode, the second negative electrode and the 3rd negative electrode is all selected from a kind of in argent (Ag), aluminium (Al), samarium (Sm) and gold (Au).Preferably, the thickness of described the first negative electrode, the second negative electrode and the 3rd negative electrode is 18～30nm.More preferably, the material of described the first negative electrode, the second negative electrode and the 3rd negative electrode is all selected from argent (Ag), and thickness is 20nm.
The organic electroluminescence device that first aspect present invention provides, by two luminescence unit groups, combined, comprise altogether three independently organic generating electroluminescent units, difference transmitting green light, blue light and ruddiness, the utilizing emitted light of two organic electroluminescence cell groups all passes through transparent spacer layer, mix with the emission spectrum of a relative luminescence unit group, thereby finally formed white light emission.Due in white light, the proportion of green glow composition is larger, so the present invention is arranged on green luminescence unit independently on a substrate, makes its light-emitting area larger, thereby can make in luminescent spectrum the composition of green glow more, can make device obtain higher luminous efficiency; By red, blue light emitting unit is arranged on same public substrate, by insulated column, separate, and control by control unit independently, such three luminescence units all can by separately independently control unit control, can be by regulating different electric currents or voltage parameter to obtain white light emission.And in three luminescence units, red, the size of blue luminescence unit can also carry out free adjustment can be controlled, and obtains different white light emissions, the controllability of device is improved.Carry out stacked setting with traditional three luminescence units and independent control compared, this structure decrease stacked thickness, and the luminescence unit on two substrates can separately be prepared, and improved make efficiency.
In organic electroluminescence device structure of the present invention, adopted transparent separator to isolate two luminescence unit groups, and adopt transparent cathode material, photochromic can the accessing of two luminescence unit groups penetrated, and in static state, when not lighting, this appearance of device presents transparence, can also allow passing of natural daylight, therefore, can be used as Transparent Parts and use, greatly widened the use field of this device.
On the other hand, the invention provides a kind of preparation method of organic electroluminescence device, comprise the following steps:
Clean first substrate and second substrate is provided, in vacuum coating system, on described first substrate, prepare the first luminescence unit, obtain the first luminescence unit group, on described second substrate, prepare insulated column, on the second substrate of described insulated column both sides, prepare side by side again the second luminescence unit and the 3rd luminescence unit, obtain the second luminescence unit group;
Between described the first luminescence unit group and the second luminescence unit group, transparent spacer layer is set, then adopts binding agent by first substrate and second substrate bonding, form hermetically-sealed construction, obtain organic electroluminescence device;
Described first substrate forms the first enclosure space by binding agent and described transparent spacer layer, described the first luminescence unit is contained in described the first enclosure space, and described the first luminescence unit comprises the first anode, the first hole injection layer, the first hole transmission layer, green luminescence layer, the first electron transfer layer, the first electron injecting layer and the first negative electrode being cascading on described first substrate surface;
Described second substrate forms the second enclosure space by binding agent and described transparent spacer layer, described insulated column is separated into the first receiving space and the second receiving space by described the second enclosure space, described the second luminescence unit is contained in described the first receiving space, described the 3rd luminescence unit is contained in described the second receiving space, described the second luminescence unit comprises the second plate being cascading on described second substrate surface, the second hole injection layer, the second hole transmission layer, blue light-emitting, the second electron transfer layer, the second electron injecting layer and the second negative electrode, described the 3rd luminescence unit comprises third anode, the 3rd hole injection layer, the 3rd hole transmission layer, red light luminescent layer, the 3rd electron transfer layer, the 3rd electron injecting layer and the 3rd negative electrode being cascading on described second substrate surface,
Wherein, the vacuum degree of described vacuum coating system is 1 * 10 -5～1 * 10 -3pa, the described first anode, second plate, third anode and insulated column adopt the mode of magnetron sputtering to prepare, and described the first hole injection layer, the first hole transmission layer, green luminescence layer, the first electron transfer layer, the first electron injecting layer and the first negative electrode adopt the mode of vacuum evaporation to prepare; Described the second hole injection layer, the second hole transmission layer, blue light-emitting, the second electron transfer layer, the second electron injecting layer and the second negative electrode adopt the mode of vacuum evaporation to prepare; Described the 3rd hole injection layer, the 3rd hole transmission layer, blue light-emitting, the 3rd electron transfer layer, the 3rd electron injecting layer and the 3rd negative electrode adopt the mode of vacuum evaporation to prepare.
Preferably, the material of described green luminescence layer is the composite material that fluorescence luminescent material or green glow material of main part Doping Phosphorus luminescent material form, and described fluorescence luminescent material is 2,3,6,7-tetrahydrochysene-1,1,7,7-tetramethyl-1H, 5H, 11H-10-(2-[4-morpholinodithio base)-quinolizino [9,9A, 1GH] cumarin (C545T), (oxine)-aluminium (Alq 3) and dimethylquinacridone (DMQA) in a kind of, described green glow material of main part is 4,4 ', 4 ' '-tri-(carbazole-9-yl)-triphenylamine (TCTA) or 1,3,5-tri-(1-phenyl-1H-benzimidazolyl-2 radicals-yl) benzene (TPBi), described phosphor material is acetopyruvic acid two (2-phenylpyridine) iridium (Ir (ppy) 2 (acac)), three (2-phenylpyridines) close iridium (Ir (ppy) 3) or three [2-(p-methylphenyl) pyridines] close iridium (III) (Ir (mppy) 3), the doping mass fraction of described phosphor material is 5～20%.Preferably, the material evaporation speed of green luminescence layer is 0.01～1nm/s.
Preferably, the material of described blue light-emitting is the composite material that Blue-light emitting host material Doping Phosphorus luminescent material forms, and described Blue-light emitting host material is 1,3,5-tri-(1-phenyl-1H-benzimidazolyl-2 radicals-yl) benzene (TPBi) or 4,4'-bis-(9-carbazole) biphenyl (CBP); Described phosphor material is that two (4,6-difluorophenyl pyridine-N, C2) pyridine formyls close iridium (FIrpic) or two (4,6-difluorophenyl pyridines)-tetra-(1-pyrazolyl) boric acid closes iridium (FIr6), and the doping mass fraction of described phosphor material is 2～20%.Preferably, the material evaporation speed of blue light-emitting is 0.01～1nm/s.
Preferably, the material of described red light luminescent layer is 4-(dintrile methyl)-2-butyl-6-(1,1,7,7-tetramethyl Lip river of a specified duration pyridine-9-vinyl)-4H-pyrans (DCJTB) is entrained in oxine aluminium (Alq 3) the middle composite material forming, (acetylacetone,2,4-pentanedione) closes iridium (Ir (MDQ) 2 (acac)) and is entrained in N, N'-diphenyl-N, N'-bis-(1-naphthyl)-1,1'-biphenyl-4, the composite material forming in 4'-diamines (NPB), three (1-phenyl-isoquinolin) close iridium (Ir (piq) 3) be entrained in N, N'-diphenyl-N, N'-bis-(1-naphthyl)-1,1'-biphenyl-4, the composite material forming in 4'-diamines (NPB), or two (2-(benzo [b] thiophene-2-yl) pyridine) (acetylacetone,2,4-pentanedione) (Ir (btp) 2 (acac)) closes iridium and is entrained in the composite material forming in 4,4'-bis-(9-carbazole) biphenyl (CBP), and doping mass fraction is 1～20%.Preferably, the material evaporation speed of red light luminescent layer is 0.01～1nm/s.
Preferably, the thickness of described green luminescence layer is 10～30nm; The thickness of described blue light-emitting is 5～20nm; The thickness of described red light luminescent layer is 1～20nm.
The material of described insulated column is inorganic oxide or nitride.
Preferably, the material of described insulated column is silicon dioxide (SiO 2), titanium dioxide (TiO 2) or silicon nitride (Si 3n 4).
Preferably, the height of insulated column is equal to or less than the thickness of the second luminescence unit and the 3rd luminescence unit.
Insulated column adopts the mode of magnetron sputtering to prepare, and sputter rate is preferably 0.2～2nm/s.
Preferably, described the second luminescence unit is 0.2～5:1 with the ratio of the area of the 3rd luminescence unit.More preferably, described the second luminescence unit is 1:1 with the ratio of the area of the 3rd luminescence unit.
The area summation of described the second luminescence unit and the 3rd luminescence unit is slightly less than the area of the first luminescence unit.
Preferably, described transparent spacer layer is conventional clear glass, flexible clear materials layer or transparent insulation coating.
Preferably, described flexible clear materials layer is PETG (PET) film.
Preferably, described transparent insulation coating is the transparent UV gel coating of photocuring.
Preferably, the thickness of described transparent spacer layer is 0.05～2mm.
Preferably, described first substrate and second substrate are conventional clear glass substrate, and thickness is 0.2～2mm.
Conventional clear glass substrate can adopt following manner to clean: be placed in the deionized water that contains washing agent and carry out ultrasonic cleaning, use successively isopropyl alcohol after cleaning up, acetone is processed 20 minutes in ultrasonic wave, and then dries up with nitrogen.
Preferably, the material of the described first anode, second plate and third anode is transparent conductive oxide film.
Preferably, described transparent conductive oxide film is indium and tin oxide film (ITO), indium-zinc oxide (IZO), aluminium zinc oxide (AZO) or gallium zinc oxide (GZO).Preferably, the thickness of described transparent conductive oxide film is 70～200nm.The first anode, second plate and third anode adopt the mode of magnetron sputtering to prepare, and sputter rate is 0.2～2nm/s.
Preferably, the material of described the first hole injection layer, the second hole injection layer and the 3rd hole injection layer is all selected from CuPc (CuPc), Phthalocyanine Zinc (ZnPc), ranadylic phthalocyanine (VOPc), a kind of in TiOPc (TiOPc) and phthalocyanine platinum (PtPc).Preferably, the thickness of described the first hole injection layer, the second hole injection layer and the 3rd hole injection layer is 10～30nm.More preferably, the material of the first hole injection layer, the second hole injection layer and the 3rd hole injection layer is all selected from CuPc (CuPc), and thickness is 20nm.
Preferably, the evaporation speed of the first hole injection layer, the second hole injection layer and the 3rd hole injection layer is 0.1～1nm/s.
Preferably, the material of described the first hole transmission layer, the second hole transmission layer and the 3rd hole transmission layer is all selected from 4,4', 4''-tri-(2-naphthyl phenyl amino) triphenylamine (2-TNATA), N, N'-diphenyl-N, N'-bis-(1-naphthyl)-1,1'-biphenyl-4,4'-diamines (NPB), (4,4', 4''-tri-(N-3-aminomethyl phenyl-N-phenyl amino) triphenylamine (m-MTDATA), N, N'-diphenyl-N, N'-bis-(3-aminomethyl phenyl)-1,1'-biphenyl-4,4'-diamines (TPD) and 4,4', a kind of in 4''-tri-(carbazole-9-yl) triphenylamine (TCTA).Preferably, the thickness of described the first hole transmission layer, the second hole transmission layer and the 3rd hole transmission layer is 10～60nm.
More preferably, the material of described the first hole transmission layer, the second hole transmission layer and the 3rd hole transmission layer is all selected from N, N'-diphenyl-N, and N'-bis-(1-naphthyl)-1,1'-biphenyl-4,4'-diamines (NPB), thickness is 30nm.
Preferably, the evaporation speed of the first hole transmission layer, the second hole transmission layer and the 3rd hole transmission layer is 0.1～1nm/s.
Preferably, the material of described the first electron transfer layer, the second electron transfer layer and the 3rd electron transfer layer is all selected from 2-(4-xenyl)-5-(4-the tert-butyl group) phenyl-1,3,4-oxadiazole (PBD), 4,7-diphenyl-o-phenanthroline (Bphen), 1,3,5-tri-(1-phenyl-1H-benzimidazolyl-2 radicals-yl) benzene (TPBi), 2,9-dimethyl-4,7-biphenyl-1, a kind of in 10-phenanthrolene (BCP) and 1,2,4-triazole derivative (TAZ).Preferably, the thickness of described the first electron transfer layer, the second electron transfer layer and the 3rd electron transfer layer is 20～60nm.
More preferably, the material of described the first electron transfer layer, the second electron transfer layer and the 3rd electron transfer layer is all selected from 1,3,5-tri-(1-phenyl-1H-benzimidazolyl-2 radicals-yl) benzene (TPBi), and thickness is 30nm.
Preferably, the evaporation speed of the first electron transfer layer, the second electron transfer layer and the 3rd electron transfer layer is 0.1～1nm/s.
Preferably, the material of described the first electron injecting layer, the second electron injecting layer and the 3rd electron injecting layer is all selected from a kind of in lithium fluoride (LiF) and cesium fluoride (CsF).Preferably, the thickness of described the first electron injecting layer, the second electron injecting layer and the 3rd electron injecting layer is 0.5～1nm.More preferably, the material of the first electron injecting layer, the second electron injecting layer and the 3rd electron injecting layer is all selected from lithium fluoride (LiF), and thickness is 1nm.
Preferably, the evaporation speed of the first electron injecting layer, the second electron injecting layer and the 3rd electron injecting layer is 0.1～1nm/s.
Preferably, the material of described the first negative electrode, the second negative electrode and the 3rd negative electrode is all selected from a kind of in argent (Ag), aluminium (Al), samarium (Sm) and gold (Au).Preferably, the thickness of described the first negative electrode, the second negative electrode and the 3rd negative electrode is 18～30nm.More preferably, the material of described the first negative electrode, the second negative electrode and the 3rd negative electrode is all selected from argent (Ag), and thickness is 20nm.
Preferably, the evaporation speed of the first negative electrode, the second negative electrode and the 3rd negative electrode is 0.2～2nm/s.
The invention provides a kind of organic electroluminescence device and preparation method thereof and there is following beneficial effect:
(1) organic electroluminescence device of the present invention is combined by two luminescence unit groups, comprise altogether three independently organic generating electroluminescent units, difference transmitting green light, blue light and ruddiness, the emission spectrum of two luminescence unit groups rationally mixes, can obtain white light emission, and this white light is photochromic stable, and luminous efficiency is high;
(2) three of organic electroluminescence device of the present invention luminescence units all can control separately luminous, can be by regulating different electric currents or voltage parameter to obtain white light emission, the controllability of device is high; Device is not switched on while using, and can present higher transmitance, can be used as Transparent Parts and uses, and has greatly widened the use field of this device;
(3) preparation method of organic electroluminescence device provided by the invention, the luminescence unit on two substrates can separately be prepared, and has improved make efficiency, and technique is simple, is conducive to large-scale production.
Accompanying drawing explanation
Fig. 1 is the structural representation of the organic electroluminescence device that makes of the embodiment of the present invention 1;
Fig. 2 is the structural representation of the organic electroluminescence device that makes of the embodiment of the present invention 2;
Fig. 3 is the structural representation of the organic electroluminescence device that makes of the embodiment of the present invention 3.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Embodiment based in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment 1
A preparation method for organic electroluminescence device, comprises the following steps:
(1) providing thickness is the first glass substrate and the second glass substrate of 0.2mm, is placed in the deionized water that contains washing agent and carries out ultrasonic cleaning, then use successively isopropyl alcohol, and acetone is processed 20 minutes in ultrasonic wave, and then dries up with nitrogen;
(2) the first glass substrate after clean being placed in to vacuum degree is 1 * 10 -5in the vacuum coating system of Pa, prepare the first luminescence unit, obtain the first luminescence unit group: first adopt the mode of magnetron sputtering to prepare the first anode on the first glass substrate, material is ITO, thickness is 100nm, then on ITO surface successively evaporation, prepares the first hole injection layer, the first hole transmission layer, green luminescence layer, the first electron transfer layer, the first electron injecting layer and the first negative electrode;
Wherein, the material of green luminescence layer is TPBi doping Ir (ppy) 3the composite material forming, doping mass fraction is 5%, and thickness is 30nm, and evaporation speed is 0.01nm/s;
The material of the first hole injection layer is CuPc, and thickness is 20nm, and evaporation speed is 0.1nm/s; The material of the first hole transmission layer is NPB, and thickness is 30nm, and evaporation speed is 0.1nm/s; The material of the first electron transfer layer is TPBi, and thickness is 30nm, and evaporation speed is 0.1nm/s; The material of the first electron injecting layer is LiF, and thickness is 1nm, and evaporation speed is 0.1nm/s; The material of the first negative electrode is metal A g, and thickness is 20nm.
The structure of the first luminescence unit is: the first glass substrate/ITO (100nm)/CuPc(20nm)/NPB (30nm)/TPBi:Ir (ppy) 3(5%, 30nm)/TPBi (30nm)/LiF (1nm)/Ag (20nm).
(3) the second glass substrate after clean being placed in to vacuum degree is 1 * 10 -5in the vacuum coating system of Pa, on the second glass substrate, prepare insulated column, and the ratio of preparing side by side area occupied in insulated column both sides be 1:1 the second luminescence unit and the 3rd luminescence unit, obtain the second luminescence unit group: first adopt the mode of magnetron sputtering to prepare insulated column at the positive middle part of the second glass substrate, material is SiO 2, thickness is 100nm, sputter rate is 0.2nm/s; In a side of insulated column, prepare second plate again, material is ITO, thickness is 100nm, then on ITO surface successively evaporation, prepares the second hole injection layer, the second hole transmission layer, blue light-emitting, the second electron transfer layer, the second electron injecting layer and the second negative electrode; Opposite side at insulated column is prepared third anode, material is ITO, thickness is 100nm, then on ITO surface successively evaporation, prepares the 3rd hole injection layer, the 3rd hole transmission layer, red light luminescent layer, the 3rd electron transfer layer, the 3rd electron injecting layer and the 3rd negative electrode;
Wherein, the material of blue light-emitting is the composite material that CBP doped F Irpic forms, and doping mass fraction is 20%, and thickness is 10nm, and evaporation speed is 0.01nm/s;
The material of the second hole injection layer is CuPc, and thickness is 20nm, and evaporation speed is 0.1nm/s; The material of the second hole transmission layer is NPB, and thickness is 30nm, and evaporation speed is 0.1nm/s; The material of the second electron transfer layer is TPBi, and thickness is 30nm, and evaporation speed is 0.1nm/s; The material of the second electron injecting layer is LiF, and thickness is 1nm, and evaporation speed is 0.1nm/s; The material of the second negative electrode is metal A g, and thickness is 20nm.
The structure of the second luminescence unit is: the second glass substrate/ITO (100nm)/CuPc(20nm)/NPB (30nm)/CBP:FIrpic (20%, 10nm)/TPBi (30nm)/LiF (1nm)/Ag (20nm).
The material of red light luminescent layer is Ir (btp) 2(acac) be entrained in the composite material forming in CBP, doping mass fraction is 20%, and thickness is 10nm, and evaporation speed is 0.01nm/s;
The material of the 3rd hole injection layer is CuPc, and thickness is 20nm, and evaporation speed is 0.1nm/s; The material of the 3rd hole transmission layer is NPB, and thickness is 30nm, and evaporation speed is 0.1nm/s; The material of the 3rd electron transfer layer is TPBi, and thickness is 30nm, and evaporation speed is 0.1nm/s; The material of the 3rd electron injecting layer is LiF, and thickness is 1nm, and evaporation speed is 0.1nm/s; The material of the 3rd negative electrode is metal A g, and thickness is 20nm.
The structure of the 3rd luminescence unit is: the second glass substrate/ITO (100nm)/CuPc(20nm)/NPB (30nm)/CBP:Ir (btp) 2(acac) (20%, 10nm)/TPBi (30nm)/LiF (1nm)/Ag (20nm).
(4) using clear glass that thickness is 0.1mm as transparent spacer layer, be placed between the first glass substrate and the second glass substrate, adopt adhesive that the first glass substrate and the second glass substrate are bonded together, form hermetically-sealed construction, obtain organic electroluminescence device, the first glass substrate forms the first enclosure space by binding agent and transparent spacer layer, the first luminescence unit is contained in the first enclosure space, the second glass substrate forms the second enclosure space by binding agent and transparent spacer layer, insulated column is separated into the first receiving space and the second receiving space by the second enclosure space, described the second luminescence unit is contained in described the first receiving space, described the 3rd luminescence unit is contained in described the second receiving space.
Fig. 1 is the structural representation of the organic electroluminescence device that makes of the embodiment of the present invention 1.As shown in Figure 1, the present embodiment organic electroluminescence device, comprise the first luminescence unit group 10 and the second luminescence unit group 20 and be arranged on the first luminescence unit group 10 and the second luminescence unit group 20 between transparent spacer layer 30, wherein, the first luminescence unit group 10 comprises the first glass substrate 11 and is arranged on the first luminescence unit 12 on the first glass substrate 11, the first luminescence unit 12 is green luminescence unit, the first glass substrate 11 forms the first enclosure space by binding agent and transparent spacer layer 30, and the first luminescence unit 12 is contained in the first enclosure space, the second luminescence unit group 20 comprises the second glass substrate 21 and is arranged on the second luminescence unit 22 and the 3rd luminescence unit 23 on the second glass substrate 21, the second luminescence unit 22 is blue light emitting unit, the 3rd luminescence unit 23 is red light-emitting unit, the ratio of the second luminescence unit 22 and the 3rd luminescence unit 23 shared area on the second glass substrate 21 is 1:1, the second glass substrate 21 forms the second enclosure space by binding agent and transparent spacer layer 30, insulated column 24 is separated into the first receiving space and the second receiving space by the second enclosure space, the second luminescence unit 22 is contained in the first receiving space, the 3rd luminescence unit 23 is contained in the second receiving space.
Embodiment 2
A preparation method for organic electroluminescence device, comprises the following steps:
(1) providing thickness is the first glass substrate and the second glass substrate of 2mm, is placed in the deionized water that contains washing agent and carries out ultrasonic cleaning, then use successively isopropyl alcohol, and acetone is processed 20 minutes in ultrasonic wave, and then dries up with nitrogen;
(2) the first glass substrate after clean being placed in to vacuum degree is 1 * 10 -5in the vacuum coating system of Pa, prepare the first luminescence unit, obtain the first luminescence unit group: first adopt the mode of magnetron sputtering to prepare the first anode on the first glass substrate, material is ITO, thickness is 100nm, then on ITO surface successively evaporation, prepares the first hole injection layer, the first hole transmission layer, green luminescence layer, the first electron transfer layer, the first electron injecting layer and the first negative electrode;
Wherein, the material of green luminescence layer is TPBi doping Ir (ppy) 2(acac) composite material forming, doping mass fraction is 20%, and thickness is 30nm, and evaporation speed is 0.2nm/s;
The material of the first hole injection layer is ZnPc, and thickness is 20nm, and evaporation speed is 1nm/s; The material of the first hole transmission layer is TPD, and thickness is 30nm, and evaporation speed is 1nm/s; The material of the first electron transfer layer is TPBi, and thickness is 30nm, and evaporation speed is 1nm/s; The material of the first electron injecting layer is CsF, and thickness is 1nm, and evaporation speed is 1nm/s; The material of the first negative electrode is metal A g, and thickness is 20nm.
The structure of the first luminescence unit is: the first glass substrate/ITO (100nm)/CuPc(20nm)/NPB (30nm)/TPBi:Ir (ppy) 3(20%, 30nm)/TPBi (30nm)/CsF (1nm)/Ag (20nm).
(3) the second glass substrate after clean being placed in to vacuum degree is 1 * 10 -5in the vacuum coating system of Pa, on the second glass substrate, prepare insulated column, and the ratio of preparing side by side area occupied in insulated column both sides be 0.2:1 the second luminescence unit and the 3rd luminescence unit, obtain the second luminescence unit group: first adopt the mode of magnetron sputtering to prepare insulated column at the positive middle part of the second glass substrate, material is TiO 2, thickness is 100nm, sputter rate is 2nm/s; In a side of insulated column, prepare second plate again, material is ITO, thickness is 100nm, then on ITO surface successively evaporation, prepares the second hole injection layer, the second hole transmission layer, blue light-emitting, the second electron transfer layer, the second electron injecting layer and the second negative electrode; Opposite side at insulated column is prepared third anode, material is ITO, thickness is 100nm, then on ITO surface successively evaporation, prepares the 3rd hole injection layer, the 3rd hole transmission layer, red light luminescent layer, the 3rd electron transfer layer, the 3rd electron injecting layer and the 3rd negative electrode;
Wherein, the material of blue light-emitting is the composite material that CBP doped F Ir6 forms, and doping mass fraction is 10%, and thickness is 20nm, and evaporation speed is 0.1nm/s;
The material of the second hole injection layer is CuPc, and thickness is 20nm, and evaporation speed is 1nm/s; The material of the second hole transmission layer is NPB, and thickness is 30nm, and evaporation speed is 1nm/s; The material of the second electron transfer layer is Bphen, and thickness is 30nm, and evaporation speed is 1nm/s; The material of the second electron injecting layer is LiF, and thickness is 1nm, and evaporation speed is 1nm/s; The material of the second negative electrode is metal A g, and thickness is 20nm.
The structure of the second luminescence unit is: the second glass substrate/ITO (100nm)/CuPc(20nm)/NPB (30nm)/CBP:FIr6 (10%, 20nm)/Bphen (30nm)/LiF (1nm)/Ag (20nm).
The material of red light luminescent layer is Ir (piq) 3be entrained in the composite material forming in CBP, doping mass fraction is 8%, and thickness is 20nm, and evaporation speed is 0.5nm/s;
The material of the 3rd hole injection layer is CuPc, and thickness is 20nm, and evaporation speed is 1nm/s; The material of the 3rd hole transmission layer is NPB, and thickness is 30nm, and evaporation speed is 1nm/s; The material of the 3rd electron transfer layer is TPBi, and thickness is 30nm, and evaporation speed is 1nm/s; The material of the 3rd electron injecting layer is LiF, and thickness is 1nm, and evaporation speed is 0.2nm/s; The material of the 3rd negative electrode is metal A g, and thickness is 20nm.
The structure of the 3rd luminescence unit is: the second glass substrate/ITO (100nm)/CuPc(20nm)/NPB (30nm)/CBP:Ir (piq) 3(8%, 20nm)/TPBi (30nm)/LiF (1nm)/Ag (20nm).
(4) take the transparent PET film that thickness is 0.1mm is transparent spacer layer, be placed between the first glass substrate and the second glass substrate, adopt adhesive that the first glass substrate and the second glass substrate are bonded together, form hermetically-sealed construction, obtain organic electroluminescence device, the first glass substrate forms the first enclosure space by binding agent and transparent spacer layer, the first luminescence unit is contained in the first enclosure space, the second glass substrate forms the second enclosure space by binding agent and transparent spacer layer, insulated column is separated into the first receiving space and the second receiving space by the second enclosure space, described the second luminescence unit is contained in described the first receiving space, described the 3rd luminescence unit is contained in described the second receiving space.
Fig. 2 is the structural representation of the organic electroluminescence device that makes of the embodiment of the present invention 2.As shown in Figure 2, the present embodiment organic electroluminescence device, comprise the first luminescence unit group 10 ' and the second luminescence unit group 20 ', and be arranged on the transparent spacer layer 30 ' between the first luminescence unit group 10 ' and the second luminescence unit group 20 ', wherein, the first luminescence unit group 10 ' comprises the first glass substrate 11 ' and is arranged on the first luminescence unit 12 ' on the first glass substrate 11 ', the first luminescence unit 12 ' is green luminescence unit, the first glass substrate 11 ' forms the first enclosure space by binding agent and transparent spacer layer 30 ', the first luminescence unit 12 ' is contained in the first enclosure space, the second luminescence unit group 20 ' comprises the second glass substrate 21 ' and is arranged on the second luminescence unit 22 ' and the 3rd luminescence unit 23 ' on the second glass substrate 21 ', the second luminescence unit 22 ' is blue light emitting unit, the 3rd luminescence unit 23 ' is red light-emitting unit, the second luminescence unit 22 ' and the 3rd luminescence unit 23 ' are 0.2:1 at the ratio of the second glass substrate 21 ' upper shared area, the second glass substrate 21 ' forms the second enclosure space by binding agent and transparent spacer layer 30 ', insulated column 24 ' is separated into the first receiving space and the second receiving space by the second enclosure space, the second luminescence unit 22 ' is contained in the first receiving space, the 3rd luminescence unit 23 ' is contained in the second receiving space.
Embodiment 3
A preparation method for organic electroluminescence device, comprises the following steps:
(1) providing thickness is the first glass substrate and the second glass substrate of 1mm, is placed in the deionized water that contains washing agent and carries out ultrasonic cleaning, then use successively isopropyl alcohol, and acetone is processed 20 minutes in ultrasonic wave, and then dries up with nitrogen;
(2) the first glass substrate after clean being placed in to vacuum degree is 1 * 10 -5in the vacuum coating system of Pa, prepare the first luminescence unit, obtain the first luminescence unit group: first adopt the mode of magnetron sputtering to prepare the first anode on the first glass substrate, material is ITO, thickness is 100nm, then on ITO surface successively evaporation, prepares the first hole injection layer, the first hole transmission layer, green luminescence layer, the first electron transfer layer, the first electron injecting layer and the first negative electrode;
Wherein, the material of green luminescence layer is Alq 3the composite material that doping C545T forms, doping mass fraction is 10%, and thickness is 10nm, and evaporation speed is 0.1nm/s;
The material of the first hole injection layer is ZnPc, and thickness is 20nm, and evaporation speed is 0.2nm/s; The material of the first hole transmission layer is TPD, and thickness is 30nm, and evaporation speed is 0.2nm/s; The material of the first electron transfer layer is TPBi, and thickness is 30nm, and evaporation speed is 0.2nm/s; The material of the first electron injecting layer is LiF, and thickness is 1nm, and evaporation speed is 0.2nm/s; The material of the first negative electrode is metal A g, and thickness is 20nm.
The structure of the first luminescence unit is: the first glass substrate/ITO (100nm)/CuPc(20nm)/NPB (30nm)/Alq 3: C545T (10%, 10nm)/TPBi (30nm)/LiF (1nm)/Ag (20nm).
(3) the second glass substrate after clean being placed in to vacuum degree is 1 * 10 -5in the vacuum coating system of Pa, on the second glass substrate, prepare insulated column, and the ratio of preparing side by side area occupied in insulated column both sides be 5:1 the second luminescence unit and the 3rd luminescence unit, obtain the second luminescence unit group: first adopt the mode of magnetron sputtering to prepare insulated column at the positive middle part of the second glass substrate, material is Si 3n 4, thickness is that 100nm sputter rate is 1nm/s; In a side of insulated column, prepare second plate again, material is ITO, thickness is 100nm, then on ITO surface successively evaporation, prepares the second hole injection layer, the second hole transmission layer, blue light-emitting, the second electron transfer layer, the second electron injecting layer and the second negative electrode; Opposite side at insulated column is prepared third anode, material is ITO, thickness is 100nm, then on ITO surface successively evaporation, prepares the 3rd hole injection layer, the 3rd hole transmission layer, red light luminescent layer, the 3rd electron transfer layer, the 3rd electron injecting layer and the 3rd negative electrode;
Wherein, the material of blue light-emitting is the composite material that CBP doped F Irpic forms, and doping mass fraction is 2%, and thickness is 20nm, and evaporation speed is 0.1nm/s;
The material of the second hole injection layer is CuPc, and thickness is 20nm, and evaporation speed is 0.2nm/s; The material of the second hole transmission layer is NPB, and thickness is 30nm, and evaporation speed is 0.2nm/s; The material of the second electron transfer layer is TPBi, and thickness is 30nm, and evaporation speed is 0.2nm/s; The material of the second electron injecting layer is LiF, and thickness is 1nm, and evaporation speed is 0.2nm/s; The material of the second negative electrode is metal A g, and thickness is 20nm.
The structure of the second luminescence unit is: the second glass substrate/ITO (100nm)/CuPc(20nm)/NPB (30nm)/CBP:FIrpic (2%, 20nm)/TPBi (30nm)/LiF (1nm)/Ag (20nm).
The material of red light luminescent layer is that DCJTB is entrained in Alq 3the composite material of middle formation, doping mass fraction is 1%, and thickness is 5nm, and evaporation speed is 0.2nm/s;
The material of the 3rd hole injection layer is CuPc, and thickness is 20nm, and evaporation speed is 0.2nm/s; The material of the 3rd hole transmission layer is NPB, and thickness is 30nm, and evaporation speed is 0.2nm/s; The material of the 3rd electron transfer layer is Bphen, and thickness is 30nm, and evaporation speed is 0.2nm/s; The material of the 3rd electron injecting layer is LiF, and thickness is 1nm, and evaporation speed is 0.2nm/s; The material of the 3rd negative electrode is metal A g, and thickness is 20nm.
The structure of the 3rd luminescence unit is: the second glass substrate/ITO (100nm)/CuPc(20nm)/NPB (30nm)/Alq 3: DCJTB (1%, 5nm)/Bphen (30nm)/LiF (1nm)/Ag (20nm).
(4) using clear glass that thickness is 2mm as transparent spacer layer, be placed between the first glass substrate and the second glass substrate, adopt adhesive that the first glass substrate and the second glass substrate are bonded together, form hermetically-sealed construction, obtain organic electroluminescence device, the first glass substrate forms the first enclosure space by binding agent and transparent spacer layer, the first luminescence unit is contained in the first enclosure space, the second glass substrate forms the second enclosure space by binding agent and transparent spacer layer, insulated column is separated into the first receiving space and the second receiving space by the second enclosure space, described the second luminescence unit is contained in described the first receiving space, described the 3rd luminescence unit is contained in described the second receiving space.
Fig. 3 is the structural representation of the organic electroluminescence device that makes of the embodiment of the present invention 3.As shown in Figure 3, the present embodiment organic electroluminescence device, comprise the first luminescence unit group 10 " and the second luminescence unit group 20 ", and be arranged on the first luminescence unit group 10 " and the second luminescence unit group 20 " between transparent spacer layer 30 ", wherein, the first luminescence unit group 10 " comprise the first glass substrate 11 " and be arranged on the first glass substrate 11 " on the first luminescence unit 12 ", the first luminescence unit 12 " be green luminescence unit, the first glass substrate 11 " by binding agent and transparent spacer layer 30 " formation the first enclosure space, the first luminescence unit 12 " be contained in the first enclosure space, the second luminescence unit group 20 " comprise the second glass substrate 21 " and be arranged on the second glass substrate 21 " on the second luminescence unit 22 " and the 3rd luminescence unit 23 ", the second luminescence unit 22 " be blue light emitting unit, the 3rd luminescence unit 23 " be red light-emitting unit, the second luminescence unit 22 " and the 3rd luminescence unit 23 " at the second glass substrate 21 " ratio of upper shared area is 5:1, the second glass substrate 21 " by binding agent and transparent spacer layer 30 " formation the second enclosure space, insulated column 24 " the second enclosure space is separated into the first receiving space and the second receiving space, the second luminescence unit 22 " be contained in the first receiving space, the 3rd luminescence unit 23 " be contained in the second receiving space.
Effect embodiment
For embodying creativeness of the present invention, respectively the organic electroluminescence device of embodiment 1～3 preparation is carried out to luminescent properties test:
The organic electroluminescence device of the embodiment of the present invention 1 preparation is carried out to luminescent properties test, and test data is as shown in table 1.When the driving voltage in adopting table 1 and drive current, can make this embodiment organic electroluminescence device obtain white light emission, the data of its CIE1931 chromaticity coordinates are (0.42,0.41), and the transmitance of this device can reach 75%.
Table 1
The organic electroluminescence device of the embodiment of the present invention 2 preparations is carried out to luminescent properties test, and test data is as shown in table 2.When the driving voltage in adopting table 2 and drive current, can make this embodiment organic electroluminescence device obtain white light emission, the data of its CIE1931 chromaticity coordinates are (0.43,0.41), and the transmitance of this device can reach 74%.
Table 2
The organic electroluminescence device of these embodiment 3 preparations is carried out to luminescent properties test, and test data is as shown in table 3.When the driving voltage in adopting table 3 and drive current, can make this embodiment organic electroluminescence device obtain white light emission, the data of its CIE1931 chromaticity coordinates are (0.38,0.39), and the transmitance of this device can reach 75%.
Table 3
It should be pointed out that each luminescence unit provides after driving voltage, just there will be corresponding drive current, only have simultaneously when these two driving voltages all meet, just there will be white light.And realize white light emission, can there is multiple voltage combination, just list a kind of situation wherein here.
The above is the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.

Claims (10)

1. an organic electroluminescence device, it is characterized in that, comprise the first luminescence unit group and the second luminescence unit group, and be arranged on the transparent spacer layer between described the first luminescence unit group and the second luminescence unit group, described the first luminescence unit group comprises first substrate and is arranged on the first luminescence unit on described first substrate, described first substrate forms the first enclosure space by binding agent and described transparent spacer layer, described the first luminescence unit is contained in described the first enclosure space, described the first luminescence unit comprises the first anode being cascading on described first substrate surface, the first hole injection layer, the first hole transmission layer, green luminescence layer, the first electron transfer layer, the first electron injecting layer and the first negative electrode,
Described the second luminescence unit group comprises second substrate and is arranged side by side the second luminescence unit and the 3rd luminescence unit on described second substrate, described the second luminescence unit and described the 3rd luminescence unit are spaced apart by being arranged on the insulated column on described second substrate surface, described second substrate forms the second enclosure space by binding agent and described transparent spacer layer, described insulated column is separated into the first receiving space and the second receiving space by described the second enclosure space, described the second luminescence unit is contained in described the first receiving space, described the 3rd luminescence unit is contained in described the second receiving space, described the second luminescence unit comprises the second plate being cascading on described second substrate surface, the second hole injection layer, the second hole transmission layer, blue light-emitting, the second electron transfer layer, the second electron injecting layer and the second negative electrode, described the 3rd luminescence unit comprises third anode, the 3rd hole injection layer, the 3rd hole transmission layer, red light luminescent layer, the 3rd electron transfer layer, the 3rd electron injecting layer and the 3rd negative electrode being cascading on described second substrate surface.
2. organic electroluminescence device as claimed in claim 1, it is characterized in that, the material of described green luminescence layer is the composite material that fluorescence luminescent material or green glow material of main part Doping Phosphorus luminescent material form, described fluorescence luminescent material is 2, 3, 6, 7-tetrahydrochysene-1, 1, 7, 7-tetramethyl-1H, 5H, 11H-10-(2-[4-morpholinodithio base)-quinolizino [9, 9A, 1GH] cumarin, a kind of in (oxine)-aluminium and dimethylquinacridone, described green glow material of main part is 4, 4 ', 4 ' '-tri-(carbazole-9-yl)-triphenylamine or 1, 3, 5-tri-(1-phenyl-1H-benzimidazolyl-2 radicals-yl) benzene, described phosphor material is acetopyruvic acid two (2-phenylpyridine) iridium, three (2-phenylpyridines) close iridium or three [2-(p-methylphenyl) pyridine] and close iridium (III), the doping mass fraction of described phosphor material is 5～20%.
3. organic electroluminescence device as claimed in claim 1, it is characterized in that, the material of described blue light-emitting is the composite material that Blue-light emitting host material Doping Phosphorus luminescent material forms, described Blue-light emitting host material is 1,3,5-tri-(1-phenyl-1H-benzimidazolyl-2 radicals-yl) benzene or 4,4'-bis-(9-carbazole) biphenyl; Described phosphor material is that two (4,6-difluorophenyl pyridine-N, C2) pyridine formyls close iridium or two (4,6-difluorophenyl pyridines)-tetra-(1-pyrazolyl) boric acid closes iridium, and the doping mass fraction of described phosphor material is 2～20%.
4. organic electroluminescence device as claimed in claim 1, it is characterized in that, the material of described red light luminescent layer is 4-(dintrile methyl)-2-butyl-6-(1, 1, 7, 7-tetramethyl Lip river of a specified duration pyridine-9-vinyl)-4H-pyrans is entrained in the composite material forming in oxine aluminium, (acetylacetone,2,4-pentanedione) closes iridium and is entrained in N, N'-diphenyl-N, N'-bis-(1-naphthyl)-1, 1'-biphenyl-4, the composite material forming in 4'-diamines, three (1-phenyl-isoquinolin) close iridium and are entrained in N, N'-diphenyl-N, N'-bis-(1-naphthyl)-1, 1'-biphenyl-4, the composite material forming in 4'-diamines, or two (2-(benzo [b] thiophene-2-yl) pyridine) (acetylacetone,2,4-pentanedione) closes iridium and is entrained in 4, the composite material forming in 4'-bis-(9-carbazole) biphenyl, doping mass fraction is 1～20%.
5. organic electroluminescence device as claimed in claim 1, is characterized in that, the material of described insulated column is silicon dioxide, titanium dioxide or silicon nitride.
6. organic electroluminescence device as claimed in claim 1, is characterized in that, the thickness of described green luminescence layer is 10～30nm; The thickness of described blue light-emitting is 5～20nm; The thickness of described red light luminescent layer is 1～20nm.
7. organic electroluminescence device as claimed in claim 1, is characterized in that, described the second luminescence unit is 0.2～5:1 with the ratio of the area of the 3rd luminescence unit.
8. organic electroluminescence device as claimed in claim 1, is characterized in that, the area summation of described the second luminescence unit and the 3rd luminescence unit is slightly less than the area of the first luminescence unit.
9. organic electroluminescence device as claimed in claim 1, is characterized in that, described transparent spacer layer is conventional clear glass, flexible clear materials layer or transparent insulation coating.
10. a preparation method for organic electroluminescence device, is characterized in that, comprises the following steps:
Clean first substrate and second substrate is provided, in vacuum coating system, on described first substrate, prepare the first luminescence unit, obtain the first luminescence unit group, on described second substrate, prepare insulated column, on the second substrate of described insulated column both sides, prepare side by side again the second luminescence unit and the 3rd luminescence unit, obtain the second luminescence unit group;
Between described the first luminescence unit group and the second luminescence unit group, transparent spacer layer is set, then adopts binding agent by first substrate and second substrate bonding, form hermetically-sealed construction, obtain organic electroluminescence device;
Described first substrate forms the first enclosure space by binding agent and described transparent spacer layer, described the first luminescence unit is contained in described the first enclosure space, and described the first luminescence unit comprises the first anode, the first hole injection layer, the first hole transmission layer, green luminescence layer, the first electron transfer layer, the first electron injecting layer and the first negative electrode being cascading on described first substrate surface;
Described second substrate forms the second enclosure space by binding agent and described transparent spacer layer, described insulated column is separated into the first receiving space and the second receiving space by described the second enclosure space, described the second luminescence unit is contained in described the first receiving space, described the 3rd luminescence unit is contained in described the second receiving space, described the second luminescence unit comprises the second plate being cascading on described second substrate surface, the second hole injection layer, the second hole transmission layer, blue light-emitting, the second electron transfer layer, the second electron injecting layer and the second negative electrode, described the 3rd luminescence unit comprises third anode, the 3rd hole injection layer, the 3rd hole transmission layer, red light luminescent layer, the 3rd electron transfer layer, the 3rd electron injecting layer and the 3rd negative electrode being cascading on described second substrate surface,
Wherein, the vacuum degree of described vacuum coating system is 1 * 10 -5～1 * 10 -3pa, the described first anode, second plate, third anode and insulated column adopt the mode of magnetron sputtering to prepare, and described the first hole injection layer, the first hole transmission layer, green luminescence layer, the first electron transfer layer, the first electron injecting layer and the first negative electrode adopt the mode of vacuum evaporation to prepare; Described the second hole injection layer, the second hole transmission layer, blue light-emitting, the second electron transfer layer, the second electron injecting layer and the second negative electrode adopt the mode of vacuum evaporation to prepare; Described the 3rd hole injection layer, the 3rd hole transmission layer, blue light-emitting, the 3rd electron transfer layer, the 3rd electron injecting layer and the 3rd negative electrode adopt the mode of vacuum evaporation to prepare.
CN201310189877.5A 2013-05-21 2013-05-21 Organic electroluminescent device and preparation method thereof Pending CN104183706A (en)

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Publication number Priority date Publication date Assignee Title
CN1592517A (en) * 2003-08-28 2005-03-09 奇美电子股份有限公司 OLED display and production method thereof
CN1658711A (en) * 2004-02-17 2005-08-24 株式会社日立显示器 Organic electroluminescent display device
CN1700484A (en) * 2004-05-17 2005-11-23 深圳大学 A novel white light LED structure
CN1731905A (en) * 2005-08-23 2006-02-08 悠景科技股份有限公司 Low power color organic electro-luminescence display device
US20070126354A1 (en) * 2005-12-02 2007-06-07 Ching-Ian Chao Encapsulation structure of double sided organic light emitting device and method of fabricating the same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1592517A (en) * 2003-08-28 2005-03-09 奇美电子股份有限公司 OLED display and production method thereof
CN1658711A (en) * 2004-02-17 2005-08-24 株式会社日立显示器 Organic electroluminescent display device
CN1700484A (en) * 2004-05-17 2005-11-23 深圳大学 A novel white light LED structure
CN1731905A (en) * 2005-08-23 2006-02-08 悠景科技股份有限公司 Low power color organic electro-luminescence display device
US20070126354A1 (en) * 2005-12-02 2007-06-07 Ching-Ian Chao Encapsulation structure of double sided organic light emitting device and method of fabricating the same

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Application publication date: 20141203