CN104078623B - A kind of organic electroluminescence device, organic electroluminescence display device and method of manufacturing same - Google Patents
A kind of organic electroluminescence device, organic electroluminescence display device and method of manufacturing same Download PDFInfo
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- CN104078623B CN104078623B CN201410270075.1A CN201410270075A CN104078623B CN 104078623 B CN104078623 B CN 104078623B CN 201410270075 A CN201410270075 A CN 201410270075A CN 104078623 B CN104078623 B CN 104078623B
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- 238000005401 electroluminescence Methods 0.000 title claims abstract description 40
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 239000000463 material Substances 0.000 claims abstract description 159
- 230000005540 biological transmission Effects 0.000 claims abstract description 58
- 230000005525 hole transport Effects 0.000 claims description 20
- 230000027756 respiratory electron transport chain Effects 0.000 claims description 13
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims description 12
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N diphenyl Chemical compound C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims description 8
- 239000004305 biphenyl Substances 0.000 claims description 6
- 238000002347 injection Methods 0.000 claims description 6
- 239000007924 injection Substances 0.000 claims description 6
- -1 (8-hydroxyquinoline) aluminum Chemical compound 0.000 claims description 4
- 235000010290 biphenyl Nutrition 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 230000006798 recombination Effects 0.000 abstract description 9
- 238000005215 recombination Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract description 5
- 230000004308 accommodation Effects 0.000 abstract description 4
- YYMBJDOZVAITBP-UHFFFAOYSA-N rubrene Chemical compound C1=CC=CC=C1C(C1=C(C=2C=CC=CC=2)C2=CC=CC=C2C(C=2C=CC=CC=2)=C11)=C(C=CC=C2)C2=C1C1=CC=CC=C1 YYMBJDOZVAITBP-UHFFFAOYSA-N 0.000 description 19
- TVIVIEFSHFOWTE-UHFFFAOYSA-K tri(quinolin-8-yloxy)alumane Chemical compound [Al+3].C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1.C1=CN=C2C([O-])=CC=CC2=C1 TVIVIEFSHFOWTE-UHFFFAOYSA-K 0.000 description 14
- HXWWMGJBPGRWRS-CMDGGOBGSA-N 4- -2-tert-butyl-6- -4h-pyran Chemical compound O1C(C(C)(C)C)=CC(=C(C#N)C#N)C=C1\C=C\C1=CC(C(CCN2CCC3(C)C)(C)C)=C2C3=C1 HXWWMGJBPGRWRS-CMDGGOBGSA-N 0.000 description 11
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 description 8
- 238000004020 luminiscence type Methods 0.000 description 7
- 230000005611 electricity Effects 0.000 description 5
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- XCJYREBRNVKWGJ-UHFFFAOYSA-N copper(II) phthalocyanine Chemical compound [Cu+2].C12=CC=CC=C2C(N=C2[N-]C(C3=CC=CC=C32)=N2)=NC1=NC([C]1C=CC=CC1=1)=NC=1N=C1[C]3C=CC=CC3=C2[N-]1 XCJYREBRNVKWGJ-UHFFFAOYSA-N 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 238000010791 quenching Methods 0.000 description 3
- 230000001105 regulatory effect Effects 0.000 description 3
- UHXOHPVVEHBKKT-UHFFFAOYSA-N 1-(2,2-diphenylethenyl)-4-[4-(2,2-diphenylethenyl)phenyl]benzene Chemical compound C=1C=C(C=2C=CC(C=C(C=3C=CC=CC=3)C=3C=CC=CC=3)=CC=2)C=CC=1C=C(C=1C=CC=CC=1)C1=CC=CC=C1 UHXOHPVVEHBKKT-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- ZYGHJZDHTFUPRJ-UHFFFAOYSA-N coumarin Chemical compound C1=CC=C2OC(=O)C=CC2=C1 ZYGHJZDHTFUPRJ-UHFFFAOYSA-N 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000005281 excited state Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- NBVXSUQYWXRMNV-UHFFFAOYSA-N fluoromethane Chemical compound FC NBVXSUQYWXRMNV-UHFFFAOYSA-N 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- MRNHPUHPBOKKQT-UHFFFAOYSA-N indium;tin;hydrate Chemical compound O.[In].[Sn] MRNHPUHPBOKKQT-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N naphthalene-acid Natural products C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- XSCHRSMBECNVNS-UHFFFAOYSA-N quinoxaline Chemical compound N1=CC=NC2=CC=CC=C21 XSCHRSMBECNVNS-UHFFFAOYSA-N 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- IWZZBBJTIUYDPZ-DVACKJPTSA-N (z)-4-hydroxypent-3-en-2-one;iridium;2-phenylpyridine Chemical compound [Ir].C\C(O)=C\C(C)=O.[C-]1=CC=CC=C1C1=CC=CC=N1.[C-]1=CC=CC=C1C1=CC=CC=N1 IWZZBBJTIUYDPZ-DVACKJPTSA-N 0.000 description 1
- PRPAGESBURMWTI-UHFFFAOYSA-N [C].[F] Chemical compound [C].[F] PRPAGESBURMWTI-UHFFFAOYSA-N 0.000 description 1
- CUJRVFIICFDLGR-UHFFFAOYSA-N acetylacetonate Chemical compound CC(=O)[CH-]C(C)=O CUJRVFIICFDLGR-UHFFFAOYSA-N 0.000 description 1
- UNRQTHVKJQUDDF-UHFFFAOYSA-N acetylpyruvic acid Chemical compound CC(=O)CC(=O)C(O)=O UNRQTHVKJQUDDF-UHFFFAOYSA-N 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229960000956 coumarin Drugs 0.000 description 1
- 235000001671 coumarin Nutrition 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229910052731 fluorine Inorganic materials 0.000 description 1
- 229910052741 iridium Inorganic materials 0.000 description 1
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 description 1
- RTRAMYYYHJZWQK-UHFFFAOYSA-N iridium;2-phenylpyridine Chemical compound [Ir].C1=CC=CC=C1C1=CC=CC=N1 RTRAMYYYHJZWQK-UHFFFAOYSA-N 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
- 150000002894 organic compounds Chemical class 0.000 description 1
- 150000002902 organometallic compounds Chemical class 0.000 description 1
- 150000004880 oxines Chemical class 0.000 description 1
- 238000005424 photoluminescence Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 125000000999 tert-butyl group Chemical group [H]C([H])([H])C(*)(C([H])([H])[H])C([H])([H])[H] 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
-
- 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]
- H10K50/14—Carrier transporting layers
- H10K50/15—Hole transporting layers
- H10K50/155—Hole transporting layers comprising dopants
-
- 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]
- H10K50/14—Carrier transporting layers
- H10K50/16—Electron transporting layers
- H10K50/165—Electron transporting layers comprising dopants
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K59/00—Integrated devices, or assemblies of multiple devices, comprising at least one organic light-emitting element covered by group H10K50/00
- H10K59/10—OLED displays
- H10K59/12—Active-matrix OLED [AMOLED] displays
- H10K59/122—Pixel-defining structures or layers, e.g. banks
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The present invention provides a kind of organic electroluminescence device and organic electroluminescence display device and method of manufacturing same, belonging to Display Technique field, it can solve existing organic electroluminescence device and organic electroluminescence display device and method of manufacturing same owing to the percent mass ratio of guest materials is too low or too high causes the problem that device glow color is impure or luminous efficiency is low.The organic electroluminescence device of the present invention and organic electroluminescence display device and method of manufacturing same are owing to the addition of adulterant at organic luminous layer, the electric charge transmission that can regulate organic luminous layer makes the exciton recombination region of organic luminous layer broaden, and overcomes guest materials too much or very few shortcoming that the glow color caused is impure, luminous efficiency is the highest in material of main part；The guest materials mass percent amplitude of accommodation making organic luminous layer is bigger, and the range of choice of material is wider.
Description
Technical field
The invention belongs to Display Technique field, be specifically related to a kind of organic electroluminescence device
With the organic electroluminescence display device and method of manufacturing same including this organic electroluminescence device.
Background technology
Organic Light Emitting Diode (OLED, Organic Light Emitting Diode) display dress
Put, there is all solid state, active illuminating, fast response time, high-contrast, limit without visual angle
System and the plurality of advantages such as Flexible Displays can be realized, be mid-twentieth century grow up one
Plant novel Display Technique, be widely used in the daily production of people, life.Although
Liquid crystal display is the flat faced display of main flow at present, is especially combining film crystal
After Manifold technology, the light and thin degree of its response speed, brightness, contrast and display all obtains
To being substantially improved, can not be luminous yet with display panels itself, it is necessary to use
Backlight counter plate is irradiated luminous, thus there is a definite limitation, it is impossible to obtain more
Further promote.So, OLED display will become of future generation optimal flat
Flat-panel display device, its superior function and huge market potential, attract the numerous factory in the whole world
Family and scientific research institution put in production and the research and development of OLED display.
The structure of existing organic electroluminescence device is as it is shown in figure 1, on underlay substrate
The anode layer 1 that sets gradually, hole injection layer 2, hole transmission layer 3, organic luminous layer
4, electron transfer layer 5, electron injecting layer 6 and cathode layer 7.Described organic luminous layer 4
Including material of main part, for luminous guest materials.Under certain voltage drives, electronics
It is injected into electron transfer layer 5 and hole transmission layer 3 from negative electrode and anode respectively, electricity with hole
Son and hole move to organic light emission respectively through electron transfer layer 5 and hole transmission layer 3
Layer, and the formation exciton that meets in luminescent layer, transfer to object by energy from material of main part
Material makes guest materials molecule excite, it is achieved luminous.
Wherein, material of main part includes hole transport shaped material and electricity as charge transport materials
Sub-mode transmission material, guest materials realizes luminescence for the energy receiving material of main part.Example
As, for HONGGUANG and green glow guest materials, use phosphorescent guest material more, pass through
The structure design of material of main part and guest materials, it is thus achieved that shifted to the energy of object by main body,
Thus realize the luminescence of phosphorescent guest material.One advantage of phosphorescence luminescence is, with list
All excitons that weight or triplet excited state are formed (are combined at luminescent layer by electronics and hole
Obtain) all can participate in luminescence.Energy due to the minimum triplet excited state in organic molecule
The energy of amount end singlet excited, therefore, for most phosphorescent guest
For material (phosphorescent organometallic compound), singlet state can be realized and arrive triplet
Decay realizes luminescence rapidly.Phosphorescence organic luminous layer (material of main part and guest materials) with
Fluorescence organic luminous layer (material of main part is fluorescent material, without guest materials) (is only compared
The exciton having 25% can realize luminescence), its luminous efficiency is greatly improved.
But, the ratio (relative to the quality of material of main part) of guest materials is to luminous light
Spectrum and luminous efficiency impact are very big, when guest materials mass fraction is less, and material of main part
Energy can not be transferred to guest materials completely, cause material of main part self the most luminous, lead
The glow color causing organic electroluminescence device is impure.And when the mass fraction of guest materials
Time higher, there is Exciton quenching phenomenon, reduce luminous efficiency.
Summary of the invention
Present invention aim to address organic electroluminescence device and the Organic Electricity of prior art
Photoluminescence display device is owing to the percent mass ratio of guest materials is too low or too high causes device
The problem that part glow color is impure or luminous efficiency is low, it is provided that a kind of energy balancing charge transmission
And improve organic electroluminescence device and the ORGANIC ELECTROLUMINESCENCE DISPLAYS dress of luminous efficiency
Put.
Solve the technology of the present invention problem and be employed technical scheme comprise that a kind of organic electroluminescent
Device, including anode layer, hole injection layer, hole transmission layer, organic luminous layer, electricity
Sub-transport layer, electron injecting layer and cathode layer, described organic luminous layer includes material of main part,
For luminous guest materials, described organic luminous layer also includes for adjusting electric charge transmission
Adulterant.
Preferably, described adulterant is relative to the mass percent of described material of main part
It is increased or decreased along hole transmission layer to the direction doping content of electron transfer layer.
Preferably, described adulterant is relative to the mass percent of described material of main part
Linearly increasing or linear reduction, or gradient increases or gradient reduces.
Preferably, described material of main part is electric transmission shaped material, and described adulterant is
Hole transport shaped material；Or
Described material of main part is hole transport shaped material, and described adulterant is electron-transporting type
Material.
Preferably, described hole transport shaped material is selected from N, N'-diphenyl-N, N'-(1-
Naphthyl)-1,1'-biphenyl-4,4'-diamidogen, 4,4'-bis-(9-carbazole) biphenyl, 4,4'-bis-(2,2-hexichol second
Thiazolinyl)-1,1'-biphenyl, any one in Rubrene.
Preferably, described electric transmission shaped material is selected from three (8-hydroxyquinoline) aluminum,
1,3,5-tri-(1-phenyl-1H-benzimidazolyl-2 radicals-yl) benzene, 4,7-diphenyl-1,10-o-phenanthroline
In any one.
Preferably, described adulterant is in terms of 100% by material of main part quality, adulterant matter
Amount percentage ratio is 0.1%-30%.
It is a further object to provide a kind of organic electroluminescence display device and method of manufacturing same, institute
The organic electroluminescence display device and method of manufacturing same stated includes above-mentioned organic electroluminescence device.
The organic electroluminescence device of the present invention and organic electroluminescence display device and method of manufacturing same due to
Organic luminous layer with the addition of the adulterant for adjusting electric charge transmission, can regulate organic light emission
The electric charge transmission of layer makes the exciton recombination region of organic luminous layer broaden, and overcomes object material
Material is too much or the very few glow color caused is impure, luminous efficiency is the highest in material of main part
Shortcoming；The guest materials mass percent amplitude of accommodation making organic luminous layer is bigger,
The range of choice of material is wider.
Accompanying drawing explanation
Fig. 1 is the structural representation of organic electroluminescence device.
Wherein:
1. anode layer；2. hole injection layer；3. hole transmission layer；4. organic luminous layer；5.
Electron transfer layer；6. electron injecting layer；7. cathode layer.
Detailed description of the invention
For making those skilled in the art be more fully understood that technical scheme, knot below
Close the drawings and specific embodiments the present invention is described in further detail.
For convenience of with reference to for the sake of, below by the organic compound that the present embodiments relate to
Full name and structural formula are listed as follows:
The present invention provides a kind of organic electroluminescence device, including anode layer 1, hole note
Enter layer 2, hole transmission layer 3, organic luminous layer 4, electron transfer layer 5, electronics injection
Layer 6 and cathode layer 7, described organic luminous layer includes material of main part, for luminous object
Material, organic luminous layer 4 also includes the adulterant for adjusting electric charge transmission.
Its overall structure of the organic electroluminescence device of present invention phase basic with prior art
With, except for the difference that, organic luminous layer is except including material of main part, for luminous object material
Material, also includes the adulterant for adjusting electric charge transmission.
The present invention is by with the addition of the doping for adjusting electric charge transmission at organic luminous layer
Agent, the electric charge transmission that can regulate organic luminous layer makes the exciton recombination region of organic luminous layer
Broaden, overcome guest materials too much or very few glow color caused in material of main part
The shortcoming that impure, luminous efficiency is the highest；Make the guest materials quality hundred of organic luminous layer
The proportion by subtraction amplitude of accommodation is bigger, and the range of choice of material is wider.
Preferably, described adulterant is relative to the mass percent edge of described material of main part
Hole transmission layer is increased or decreased to the direction doping content of electron transfer layer.
Improve quality percentage ratio and then tune at organic luminous layer different cross section by adjusting adulterant
The electric charge transmission of joint organic luminous layer makes the exciton recombination region of organic luminous layer broaden.
Preferably, described adulterant is relative to the mass percent line of described material of main part
Property increase or linear reduction, gradient increase or gradient reduce.
Preferably, described material of main part is electric transmission shaped material, and described adulterant is empty
Cave mode transmission material；Or
Described material of main part is hole transport shaped material, and described adulterant is electron-transporting type
Material.
Preferably, described hole transport shaped material is selected from N, N'-diphenyl-N, N'-(1-naphthalene
Base)-1,1'-biphenyl-4,4'-diamidogen (NPB), 4,4'-bis-(9-carbazole) biphenyl (CBP), 4,4'-bis-
(2,2-diphenylethyllene)-1,1'-biphenyl (DPVBi), Rubrene
(Rubrene) any one in.
Preferably, described electric transmission shaped material is selected from three (8-hydroxyquinoline) aluminum
(Alq3), 1,3,5-tri-(1-phenyl-1H-benzimidazolyl-2 radicals-yl) benzene (TPBi), 4,7-diphenyl
Any one in-1,10-o-phenanthroline (Bephen).
Preferably, described adulterant is in terms of 100% by material of main part quality, adulterant quality
Percentage ratio is 0.1%-30%.
Embodiment 1
As it is shown in figure 1, the present embodiment provides a kind of organic electroluminescence device, including sun
Pole layer 1, hole injection layer 2, hole transmission layer 3, organic luminous layer 4, electric transmission
Layer 5, electron injecting layer 6 and cathode layer 7, described organic luminous layer include material of main part,
For luminous guest materials, organic luminous layer 4 also includes for adjusting electric charge transmission
Adulterant.
In the present embodiment, the design of HONGGUANG organic light emission Rotating fields is as follows:
Adulterant rubrene starts to electricity from the interface of hole transmission layer 3/ organic luminous layer 4
The interface of sub-transport layer 5/ organic luminous layer 4 terminates to be divided into n region, and (n can be 2
Above natural number), the present embodiment n is 3, the adulterant rubrene's in each region
Mass percent increases with certain gradient respectively.
Specifically, the structure of red organic electroluminescence device is as follows:
ITO/CuPc(40nm)/NPB(40nm)/Alq3: rubrene (5wt%): DCJTB (2wt%) (1
5nm)/Alq3: rubrene (10wt%): DCJTB (2wt%) (15nm)/Alq3:rubrene(15wt
%): DCJTB (2wt%) (15nm)/Alq3(40nm)/LiF(1nm)/Al(120nm)。
Wherein, ITO is tin indium oxide；CuPc is CuPc；LiF is lithium fluoride；Have
The material of main part of machine luminescent layer 4 is Alq3, guest materials is DCJTB, and adulterant is red
Glimmering alkene (rubrene), the present embodiment is introduced as a example by emitting red light system, it should be understood that
, other blue and green light luminescence system is also feasible.
Material of main part Alq described in the present embodiment3For electric transmission shaped material, guest materials
Being hole transport shaped material for DCJTB, adulterant rubrene (rubrene) is that hole passes
Defeated shaped material.
Wherein, guest materials DCJTB is hole transport shaped material, the sky to material of main part
Cave transmittability also has certain regulating power, but guest materials DCJTB mass fraction is not
Can be too low or too high, when guest materials DCJTB mass fraction is too low, material of main part
Energy can not be transferred to guest materials completely, causes material of main part self the most luminous, device
Glow color is impure；When guest materials DCJTB mass fraction is too high, it is susceptible to swash
Sub-quenching phenomenon, reduces luminous efficiency.
Therefore, guest materials DCJTB is maintained at the percent mass of preferable illumination effect
Ratio, such as, the 2wt% of the present embodiment；
Material of main part cavity transmission ability is strengthened by adding adulterant rubrene；And then
The electric charge transmission of balance organic luminous layer, improves luminous efficiency.Adulterant in above-mentioned device
The mass percent of rubrene is divided into three gradients, 5wt%, 10wt%, 15wt%, from
And improve the cavity transmission ability of organic luminous layer, improve luminous efficiency.
Due to material of main part Alq during undoped p adulterant rubrene3The transmittability of electronics
Being far longer than hole, therefore the recombination region of exciton is close to organic luminous layer/hole transport
The interface of layer, and exciton recombination region is less, easy and hole mobile material generation cancellation.
In HONGGUANG organic light emission system in the present embodiment, adulterant rubrene provides energy level
The transmission from main body to object of ladder, beneficially energy, simultaneously because adulterant rubrene is
Hole transport shaped material, its cavity transmission ability is better than material of main part Alq3, therefore made
The overall cavity transmission ability of machine luminescent layer is strengthened, and the exciton making organic luminous layer is multiple
Conjunction region broadens.
In the present embodiment from the interface of hole transmission layer/luminescent layer to electron transfer layer/send out
The interface doping content of photosphere gradually steps up, so that the concentration in hole is divided in adulterant
Cloth presents variation tendency from low to high.Relative, owing to main body is electric transmission section bar
Material, therefore the hole concentration in material of main part is relatively low, and in the transmitting procedure in hole
Density near the hole of hole transmission layer is higher, relatively low near the density of electron transfer layer,
Contrary relative to the mass percent variation tendency of described material of main part with adulterant, reach
The effect of balance hole concentration, thus have adjusted the transmission balance of hole and electronics, improve
Luminous efficiency；
Simultaneously as guest materials too much or very few luminous face caused in material of main part
The shortcoming that color is impure, luminous efficiency is the highest, increases adulterant and regulates electric charge as another kind
The material of transmission, it is possible to make the guest materials mass percent regulation width of organic luminous layer
Degree is bigger, and the range of choice of material is wider.Such as, guest materials can select hole to regulate
The other materials that ability is more weak, or make its mass percent be in the luminance of optimum.
The red organic electroluminescence device of the present embodiment is relative to not having grade doping
Rubrene, its luminous efficiency brings up to more than 5cd/A from less than 2cd/A.
If it should be appreciated that material of main part is hole transport shaped material, then doping should be selected
Electric transmission shaped material, to adjust the electron transport ability of material of main part.
It should be appreciated that hole transport shaped material is selected from N, N'-diphenyl-N, N'-(1-naphthalene
Base)-1,1'-biphenyl-4,4'-diamidogen (NPB), 4,4'-bis-(9-carbazole) biphenyl (CBP), 4,4'-bis-
(2,2-diphenylethyllene)-1,1'-biphenyl (DPVBi), Rubrene
(Rubrene) any one in.
It should be appreciated that electric transmission shaped material is selected from three (8-hydroxyquinoline) aluminum
(Alq3), 1,3,5-tri-(1-phenyl-1H-benzimidazolyl-2 radicals-yl) benzene (TPBi), 4,7-diphenyl
Any one in-1,10-o-phenanthroline (Bephen).
Guest materials can be selected from 4-(methylene dicyanoethyl)-2-methyl-6-(4-Dimethylaminobenzene second
Thiazolinyl)-4H-pyrans (DCM), the 4-dintrile methylene-2-tert-butyl group-6-(1,1,7,7-tetramethyl
Base julolidine vinyl) pyrans (DCJTB), acetopyruvic acid two (2-phenylpyridine)
Iridium (Ir (ppy) 2 (acac)), (acetylacetone,2,4-pentanedione) double (2-methyldiphenyl also [F, H] quinoxaline) close
Iridium (Ir (mphq) 2 (acac)), 5,6,11,12-tetraphenyl aphthacene (Rubrene), 2,3,6,7-
Tetrahydrochysene-1,1,7,7-tetramethyl-1H, 5H, 11H-10-(2-[4-morpholinodithio base)-quinolizino
Any one in [9,9A, 1GH] coumarin (C545T).
Embodiment 2
The present embodiment provides the structure of a kind of organic electroluminescence device, specific as follows:
ITO/fluorocarbon(1nm)/NPB(120nm)/Alq3: NPB (5wt%):
C545T (1wt%) (10nm)/Alq3: NPB (10wt%): C545T (1wt%) (10nm)/
Alq3: NPB (30wt%): C545T (1wt%) (10nm)/Alq3(40nm)/LiF(1nm)/Al(1
20nm)。
Wherein, ITO is tin indium oxide；Fluorocarbon is fluorine carbon；Material of main part is
Alq3, guest materials is C545T, and adulterant is NPB,
Material of main part Alq described in the present embodiment3For electric transmission shaped material, guest materials
Being hole transport shaped material for C545T, adulterant NPB is hole transport shaped material.
Wherein, guest materials C545T is hole transport shaped material, the sky to material of main part
Cave transmittability also has certain regulating power, but guest materials C545T mass fraction is not
Can be too low or too high, when guest materials C545T mass fraction is too low, material of main part
Energy can not be transferred to guest materials completely, causes material of main part self the most luminous, device
Glow color is impure；When guest materials C545T mass fraction is too high, it is susceptible to swash
Sub-quenching phenomenon, reduces luminous efficiency.
Therefore, guest materials C545T is maintained at the percent mass of preferable illumination effect
Ratio, such as, the 1wt% of the present embodiment；
Material of main part cavity transmission ability is strengthened by adding adulterant NPB, thus flat
The electric charge transmission of weighing apparatus organic luminous layer, improves luminous efficiency.Adulterant NPB in above-mentioned device
Mass percent be divided into three gradients, 5wt%, 10wt%, 30wt%, thus improve
The cavity transmission ability of organic luminous layer, improves luminous efficiency.
Due to material of main part Alq during undoped p adulterant NPB3The transmittability of electronics
Being far longer than hole, therefore the recombination region of exciton is close to organic luminous layer/hole transport
The interface of layer, and exciton recombination region is less, easy and hole mobile material generation cancellation.
In HONGGUANG organic light emission system in the present embodiment, adulterant NPB provides energy level rank
The transmission from main body to object of ladder, beneficially energy, simultaneously because adulterant NPB is hole
Mode transmission material, its cavity transmission ability is better than material of main part Alq3, therefore make organic
The overall cavity transmission ability of photosphere is strengthened, and makes the exciton recombination zone of organic luminous layer
Territory broadens.
In the present embodiment from the interface of hole transmission layer/luminescent layer to electron transfer layer/send out
The interface doping content of photosphere gradually steps up, so that the concentration in hole is divided in adulterant
Cloth presents variation tendency from low to high, relative, owing to main body is electric transmission section bar
Material, therefore the hole concentration in material of main part is relatively low, and in the transmitting procedure in hole
Density near the hole of hole transmission layer is higher, relatively low near the density of electron transfer layer,
Contrary relative to the mass percent variation tendency of described material of main part with adulterant, reach
The effect of balance hole concentration, thus have adjusted the transmission balance of hole and electronics, improve
Luminous efficiency.Simultaneously as guest materials is too much or very few cause in material of main part
The shortcoming that glow color is impure, luminous efficiency is the highest, increase adulterant as another kind
The material of regulation electric charge transmission, it is possible to make the guest materials percent mass of organic luminous layer
Bigger than the amplitude of accommodation, the range of choice of material is wider, and such as, guest materials can select
The other materials that hole regulating power is more weak, or make its mass percent be in sending out of optimum
Light state
The red organic electroluminescence of the present embodiment sends out device relative to not having grade doping NPB,
Its luminous efficiency brings up to more than 8.5cd/A from less than 7.0cd/A.
It should be appreciated that can be according to concrete applicable cases by the quality hundred of adulterant
Proportion by subtraction linear increase, or gradient reduce or linear reduction；It is also possible to according to concrete
The mass fraction of adulterant is increased by applicable cases in the amplitude range internal linear of 0.1%-30%
Grow, or gradient reduces or linear reduction.
Embodiment 3
The present embodiment provides a kind of organic electroluminescence display device and method of manufacturing same, including above-mentioned organic
Electroluminescent device.Described organic electroluminescence display device and method of manufacturing same can be: oled panel,
Mobile phone, panel computer, television set, display, notebook computer, DPF, lead
Any product with display function or the parts such as boat instrument.
It is understood that the principle that embodiment of above is intended to be merely illustrative of the present
And the illustrative embodiments used, but the invention is not limited in this.For ability
For those of ordinary skill in territory, in the situation without departing from spirit and substance of the present invention
Under, various modification and improvement can be made, these modification and improvement are also considered as the present invention's
Protection domain.
Claims (6)
1. an organic electroluminescence device, including anode layer, hole injection layer, hole
Transport layer, organic luminous layer, electron transfer layer, electron injecting layer and cathode layer, described
Organic luminous layer includes material of main part, for luminous guest materials, it is characterised in that
Described organic luminous layer also includes the adulterant for adjusting electric charge transmission；
Described material of main part is electric transmission shaped material, and described adulterant is hole-transporting type
Material；Or
Described material of main part is hole transport shaped material, and described adulterant is electron-transporting type
Material；
Described adulterant relative to the mass percent of described material of main part along hole transport
Layer is increased or decreased to the direction doping content of electron transfer layer.
2. organic electroluminescence device as claimed in claim 1, it is characterised in that institute
The adulterant stated is linearly increasing relative to the mass percent of described material of main part or linearly drops
Low, or gradient increases or gradient reduces.
3. organic electroluminescence device as claimed in claim 1, it is characterised in that institute
The hole transport shaped material stated is selected from N, N'-diphenyl-N, N'-(1-naphthyl)-1,1'-biphenyl
-4,4'-diamidogen, 4,4'-bis-(9-carbazole) biphenyl, 4,4'-bis-(2,2-diphenylethyllenes)-1,1'-biphenyl,
Any one in 5,6,11,12-tetraphenyl aphthacene.
4. organic electroluminescence device as claimed in claim 1, it is characterised in that institute
The electric transmission shaped material stated is selected from three (8-hydroxyquinoline) aluminum, 1,3,5-tri-(1-phenyl-1H-
Benzimidazolyl-2 radicals-yl) benzene, 4,7-diphenyl-1, any one in 10-o-phenanthroline.
5. the organic electroluminescence device as described in claim 1-4 is arbitrary, its feature exists
In, described adulterant is in terms of 100% by material of main part quality, and adulterant mass percent is
0.1%-30%.
6. an organic electroluminescence display device and method of manufacturing same, it is characterised in that include that right such as is wanted
Seek the arbitrary described organic electroluminescence device of 1-5.
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| CN201410270075.1A CN104078623B (en) | 2014-06-17 | 2014-06-17 | A kind of organic electroluminescence device, organic electroluminescence display device and method of manufacturing same |
| PCT/CN2014/090802 WO2015192591A1 (en) | 2014-06-17 | 2014-11-11 | Organic electroluminescence device and organic electroluminescence display apparatus |
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| CN106252523B (en) * | 2016-09-30 | 2018-02-09 | 福州大学 | A kind of new structure for improving organic luminescent device luminous efficiency |
| CN109585668B (en) * | 2019-01-10 | 2021-01-29 | 京东方科技集团股份有限公司 | OLED display device, display panel and preparation method of OLED display device |
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| CN101118953A (en) * | 2007-08-10 | 2008-02-06 | 信利半导体有限公司 | Organic electroluminescent device and method for producing the same |
| CN101128559A (en) * | 2004-12-17 | 2008-02-20 | 伊斯曼柯达公司 | Phosphorescent OLEDs with exciton blocking layer |
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| CN1897777A (en) * | 2006-05-16 | 2007-01-17 | 清华大学 | Organic electroluminescent device |
| JP5380275B2 (en) * | 2007-02-19 | 2014-01-08 | 大日本印刷株式会社 | Organic electroluminescence device |
| JP2009032987A (en) * | 2007-07-27 | 2009-02-12 | Fujifilm Corp | Organic electroluminescent element |
| WO2010026859A1 (en) * | 2008-09-05 | 2010-03-11 | Semiconductor Energy Laboratory Co., Ltd. | Light-emitting element, light-emitting device, and electronic device |
| CN104078623B (en) * | 2014-06-17 | 2016-08-17 | 京东方科技集团股份有限公司 | A kind of organic electroluminescence device, organic electroluminescence display device and method of manufacturing same |
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