CN108807706A - A kind of white light series connection organic electroluminescence device - Google Patents
A kind of white light series connection organic electroluminescence device Download PDFInfo
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- CN108807706A CN108807706A CN201810568473.XA CN201810568473A CN108807706A CN 108807706 A CN108807706 A CN 108807706A CN 201810568473 A CN201810568473 A CN 201810568473A CN 108807706 A CN108807706 A CN 108807706A
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- 238000002360 preparation method Methods 0.000 abstract description 6
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- 101000837344 Homo sapiens T-cell leukemia translocation-altered gene protein Proteins 0.000 description 18
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- CINYXYWQPZSTOT-UHFFFAOYSA-N 3-[3-[3,5-bis(3-pyridin-3-ylphenyl)phenyl]phenyl]pyridine Chemical compound C1=CN=CC(C=2C=C(C=CC=2)C=2C=C(C=C(C=2)C=2C=C(C=CC=2)C=2C=NC=CC=2)C=2C=C(C=CC=2)C=2C=NC=CC=2)=C1 CINYXYWQPZSTOT-UHFFFAOYSA-N 0.000 description 15
- FJDQFPXHSGXQBY-UHFFFAOYSA-L caesium carbonate Chemical compound [Cs+].[Cs+].[O-]C([O-])=O FJDQFPXHSGXQBY-UHFFFAOYSA-L 0.000 description 14
- DKHNGUNXLDCATP-UHFFFAOYSA-N dipyrazino[2,3-f:2',3'-h]quinoxaline-2,3,6,7,10,11-hexacarbonitrile Chemical compound C12=NC(C#N)=C(C#N)N=C2C2=NC(C#N)=C(C#N)N=C2C2=C1N=C(C#N)C(C#N)=N2 DKHNGUNXLDCATP-UHFFFAOYSA-N 0.000 description 14
- 238000004020 luminiscence type Methods 0.000 description 9
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- 239000000047 product Substances 0.000 description 8
- -1 anode Substances 0.000 description 7
- HRQXKKFGTIWTCA-UHFFFAOYSA-L beryllium;2-pyridin-2-ylphenolate Chemical compound [Be+2].[O-]C1=CC=CC=C1C1=CC=CC=N1.[O-]C1=CC=CC=C1C1=CC=CC=N1 HRQXKKFGTIWTCA-UHFFFAOYSA-L 0.000 description 7
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- 238000000034 method Methods 0.000 description 5
- VQGHOUODWALEFC-UHFFFAOYSA-N 2-phenylpyridine Chemical compound C1=CC=CC=C1C1=CC=CC=N1 VQGHOUODWALEFC-UHFFFAOYSA-N 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 4
- 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 4
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- ZOKIJILZFXPFTO-UHFFFAOYSA-N 4-methyl-n-[4-[1-[4-(4-methyl-n-(4-methylphenyl)anilino)phenyl]cyclohexyl]phenyl]-n-(4-methylphenyl)aniline Chemical compound C1=CC(C)=CC=C1N(C=1C=CC(=CC=1)C1(CCCCC1)C=1C=CC(=CC=1)N(C=1C=CC(C)=CC=1)C=1C=CC(C)=CC=1)C1=CC=C(C)C=C1 ZOKIJILZFXPFTO-UHFFFAOYSA-N 0.000 description 2
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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
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K30/00—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation
- H10K30/80—Constructional details
- H10K30/865—Intermediate layers comprising a mixture of materials of the adjoining active layers
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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
- H10K50/10—OLEDs or polymer light-emitting diodes [PLED]
- H10K50/11—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers
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- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K2101/00—Properties of the organic materials covered by group H10K85/00
- H10K2101/10—Triplet emission
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- Electromagnetism (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses a kind of white light series connection organic electroluminescence devices, it includes substrate, anode, cathode and at least two layers of the white-light emitting elementary layer between the anode and cathode, it is connected by charge generating layers between described two layers adjacent white-light emitting elementary layer, the white-light emitting layer includes organic function layer, the organic function layer includes at least one layer of doping blu-ray layer and at least one layer of undoped complementary luminescent layer, and white light is obtained after photochromic mixing caused by at least one layer of doping blu-ray layer and at least one layer of undoped complementation luminescent layer.The present invention connects white-light emitting elementary layer to form organic electroluminescent device using charge generating layers, and special selection and laminated form by improving each layer of organic function layer in white-light emitting layer, to enormously simplify the structure and preparation process of the device on ensureing base material of the device with excellent luminance performance, and it is the device stable luminescent property, low to dependence of angle, there is broader practice field.
Description
Technical field
The present invention relates to organic semiconductor technologies field, more particularly to a kind of organic electroluminescence device.
Background technology
OLED (full name in English is Organic Light Emitting Diodes, is looked like for organic electroluminescence device,
Abbreviation OLED) have from main light emission, visual angle is wide, light-weight, Acclimation temperature range is wide, area is big, all solidstate, flexibility, power consumption
The many merits such as low, fast response time and manufacturing cost are low have important application in display with lighting area, thus are learned
The extensive concern of art circle and industrial quarters.
In order to further increase efficiency and the service life of device, multiple independent luminescence units are stacked up, make by researcher
An equal amount of electric current successively flows through multiple and different luminescence units and carries out common shine to improve light emission luminance and efficiency, shape
At tandem OLED.Tandem OLED usually uses charge generating layers (charge generation layer, CGL) to be used as articulamentum
Multiple luminescence unit devices in series are got up, compared with single-shot light unit device, the current efficiency and hair of Tandem devices
Brightness can be multiplied, and the current density of Tandem devices is relatively low under same brightness, thus its service life also increases
Add.
2005, Ma Dongge of Changchun Institute of Applied Chemistry et al. report for the first time series connection WOLED devices structure be：ITO/NPB/
DNA/BCP/Alq3/BCP:Li/V2O5/NPB/Alq3:DCJTB/Alq3/ LiF/Al (Appl.Phys.Lett.2005,87,
173510) wherein with DNA/BCP/Alq3Blue light and green light, Alq are generated as the first luminescence unit3:DCJTB shines as second
Unit generates feux rouges, BCP:Li/V2O5Two luminescence units are effectively connected as charge generating layers, hole and electronics are in charge
It is generated in generation layer, under electric field action, is respectively transmitted to adjacent NPB and Alq3In layer, and they pass through comparison first
Bluish-green optical device (the 2.2cdA of luminescence unit-1, 0.5lmW-1, 890cdm-2) and the second luminescence unit red device
(6cd·A-1, 2.1lmW-1, 8300cdm-2), it is found that the current efficiency of series connection WOLED and brightness are both greater than two single-shot light
(maximal efficiency is up to 10.7cdA for the summation of unit component-1, maximum brightness 10200cdm-2), and power efficiency is then equal to
Summation (the 2.6lmW of two single-shot light unit devices-1).Chang et al. is using the lower Mg of optical absorptivity simultaneously:Alq3/
WO3As charge generating layers, two single white-light emitting units are connected, discovery is influenced by microcavity effect, and connect WOLED
Efficiency (22cdA-1) it is three times of single-shot light unit device, and in 100cdm-2Under brightness, the service life is more than 80000h
(Appl.Phys.Lett.2005,87,253501).Recently, Son et al. synthesizes a kind of efficient blue phosphorescent main body first
(TATA), it can obtain based on the luminous high efficiency blue OLED (46.2cdA of FIrpic-1, 45.4lmW-1), and will be efficient
Yellow light elementary layer (86.8cdA-1, 90.5lmW-1) pass through charge generating layers TmPyPB：Rb2CO3/ Al/HAT-CN is connected
It connects, device opens bright voltage (brightness 1cdm-2) down to 4.55V, maximum power efficiency 65.4lmW-1, maximum current
Efficiency is 129.5cdA-1, maximum external quantum efficiency is 49.5%.Even if in 1000cdm-2Under brightness, the power of device is imitated
Rate is still up to 63.1lmW-1, current efficiency is up to 128.8cdA-1, external quantum efficiency is up to 49.2%, this is fully opened up
The good prospect (J.Mater.Chem.C 2013,1,5008) of tandem OLED is shown.
At present on document white light Tandem devices it is complicated, and be almost required for applying to doping techniques and be prepared
Luminescent layer.In addition, seldom improving to blu-ray layer in Tandem white device, also seldom dependence of angle is accounted for.Cause
This, provides a kind of novel, efficient, simple in structure, simple for process, spectrum-stable white light series connection organic electroluminescence device
It is very necessary.
Invention content
It is an object of the invention in view of the above shortcomings of the prior art, provide a kind of white light series connection organic electroluminescence
Part has both the multiple advantages such as luminous efficiency height, spectrum-stable, simple in structure, preparation process be simple.
The technical solution used in the present invention is：A kind of white light series connection organic electroluminescence device comprising substrate, sun
Pole, cathode and at least two layers of the white-light emitting elementary layer between the anode and cathode, described two layers adjacent white light
It is connected by charge generating layers between luminescence unit layer, the white-light emitting layer includes organic function layer, the organic function layer
Including at least one layer of doping blu-ray layer and at least one layer of undoped complementary luminescent layer, at least one layer of doping blu-ray layer
White light is obtained with after photochromic mixing caused by least one layer of undoped complementary luminescent layer.
Specifically, the charge generating layers connect N layers of white-light emitting elementary layer, wherein N >=2, white-light emitting list
First layer is overlapped series connection by charge generating layers, and charge generating layers can effectively generate hole and electronics so that the hair of the device
Light efficiency greatly increases, and is conducive to the service life of the device.Meanwhile white-light emitting elementary layer being together in series and can effectively be reduced
Dependence of angle, be conducive to the device has broader practice in fields such as displays.
As being further improved for said program, at least one layer of undoped complementary luminescent layer includes at least one light
Color, i.e., heretofore described white-light emitting elementary layer can all be two-color white light, three color white lights or four color white lights, can also be
Arbitrary two kinds of combinations in two-color white light, three color white lights, four color white lights.Complementary luminescent layer is limited in the present invention as non-doped layer,
The preparation process of device can effectively be reduced, saved time and cost.When undoped complementary light luminescent layer is polychrome, each complementary light
Luminescent layer can be with direct neighbor, can not also be adjacent, and in order to avoid excessive energy transfer or concentration quenching, the white light
Each luminescent layer inside luminescence unit layer needs spacer layer separates to come.The energy level of the wall and the direct energy level of luminescent layer
Matched, especially triplet otherwise less than contacted luminescent layer triplet 0.2eV, avoid excessive
Exciton is quenched, and influences the efficiency of device.It is the heretofore described undoped complementary luminous undoped yellow light layer of layer choosing, undoped red
One of which in photosphere, non-doping green layer.
As being further improved for said program, in order to make device have both the characteristic that simple in structure and luminous efficiency is stablized,
The doping blu-ray layer of the white-light emitting elementary layer is up to two layers.When it is two layers to adulterate blu-ray layer, blue light can be placed in
The main generating region of exciton, to guarantee to generate enough blue lights.
As being further improved for said program, the main body of doping blue light is bipolarity main body in the doping blu-ray layer.
Specifically, the main body of heretofore described doping blue light is bipolarity main body, can effectively widen the production of exciton
Raw region, enhancing efficiency, stable color coordinate, service life and reduction efficiency roll-off phenomenon.Bipolarity main body of the present invention is
The hole mobility for referring to the material is equal or approximate with electron mobility.Further, the bipolarity main body can be one kind
Material is constituted, and can also be mixed by p-type main body and N-shaped main body, but preferably homogenous material is constituted.Wherein p-type main body is
The hole mobility for referring to the material is more than electron mobility, and N-shaped main body refers to that the hole mobility of the material is less than electron transfer
Rate.
In addition, two layers of doping blu-ray layer can be disposed adjacent or non-conterminous setting.
Two layers of doping blu-ray layer be when being disposed adjacent, and can utilize between two different subjects that there are energy levels to mismatch principle,
The different principle of the charge-transporting of two different subjects can also be utilized, naturally it is also possible to while two kinds of principles are utilized, it can
Effectively to widen the generating region of exciton, further enhances efficiency, stable color coordinate, service life and reduce efficiency roll-off phenomenon.
It refers to the HOMO between two blue-light-emitting layer main bodies that the energy level, which mismatches principle, between lumo energy at least it is a kind of not
Together, charge is caused to be accumulated in blue light interlayer, and the different principle of the charge-transporting refers to main in two blue blu-ray layers
The polarity of body material therefor is different, is the arbitrary two kinds of combinations of combination of p-type material, n-type material and bipolar materials, but not
It can be p-type and the combination of p-type or the combination of N-shaped and N-shaped, otherwise can not ensure that light emitting surface is located at blue-light-emitting interlayer.Into
For one step, adulterate blu-ray layer when two layers and be disposed adjacent, two-layer luminescent layer main body is identical at this time and when object difference, can utilize
There are energy levels to mismatch principle between two different objects, the difference of the charge-transporting of two different objects can also be utilized former
Reason, naturally it is also possible to while two kinds of principles are utilized, the generating region of exciton can be effectively widened, efficiency, color are further enhanced
Coordinate stability, service life and reduction efficiency roll-off phenomenon.The energy level mismatch principle refer to two blue light-emitting layer objects it
Between HOMO, at least a kind of difference between lumo energy causes charge to be accumulated in blu-ray layer, and the charge transmission
Property different principle refer to object material therefor in two blue blu-ray layers polarity it is different, be p-type material, n-type material and double
Arbitrary two kinds of combinations of the combination of polar material, but cannot be p-type and the combination of p-type or the combination of N-shaped and N-shaped, otherwise without
Method ensures that light emitting surface is located at blue-light-emitting interlayer.
When two layers of doping non-conterminous setting of blu-ray layer, then two layers of doping blu-ray layer is respectively placed in the main generation of exciton
Region makes complementary luminous energy effectively generate by way of energy transfer.
As being further improved for said program, the doping blu-ray layer in the white-light emitting elementary layer and undoped complementation
Wall is equipped between luminescent layer.Further, the wall is undoped wall, can effectively simplify the system of the device
Standby technique.The energy level of the wall will be matched with the direct energy level of luminescent layer, especially triplet otherwise be less than
The triplet 0.2eV of the luminescent layer contacted, avoids excessive exciton from being quenched, and influences the efficiency of device.
As being further improved for said program, the doping blu-ray layer and the thickness of undoped complementary luminescent layer are
0.01~200nm, the present invention in preferably by layer thickness be 0.01~100nm, this further improves the stabilizations of the device
Property.
As being further improved for said program, the thickness of the wall is 0.01~30nm, between preferred in of the invention
The thickness of interlayer is 0.1~10nm, and this further improves the stability of the device.
As being further improved for said program, the organic function layer further includes being located at the organic function layer side
Electron injecting layer, electron transfer layer and hole transmission layer, hole injection layer positioned at the organic function layer other side.
In addition, the position of each white-light emitting elementary layer in heretofore described Tandem devices can be according to actual needs
It is exchanged mutually, so as to optimised devices.Luminescent layer position in each white-light emitting elementary layer can also be according to reality
Border needs to be exchanged mutually, so as to optimised devices.
The beneficial effects of the invention are as follows：The present invention connects white-light emitting elementary layer to form organic cause using charge generating layers
Electroluminescence device, and special selection and laminated form by improving each layer of organic function layer in white-light emitting layer, to protect
The structure and preparation process that the device is enormously simplified on base material of the device with excellent luminance performance are demonstrate,proved, and the device shines
Performance is stable, low to dependence of angle, has broader practice field.
Description of the drawings
Fig. 1 is the schematic diagram of a layer structure of the white light series connection organic electroluminescence device of the embodiment of the present invention 1；
Fig. 2 is the schematic diagram of a layer structure of the white light series connection organic electroluminescence device of the embodiment of the present invention 2；
Fig. 3 is the schematic diagram of a layer structure of the white light series connection organic electroluminescence device of the embodiment of the present invention 3；
Fig. 4 is the schematic diagram of a layer structure of the white light series connection organic electroluminescence device of the embodiment of the present invention 4；
Fig. 5 is the schematic diagram of a layer structure of the white light series connection organic electroluminescence device of the embodiment of the present invention 5；
Fig. 6 is the schematic diagram of a layer structure of the white light series connection organic electroluminescence device of the embodiment of the present invention 6；
Fig. 7 is the schematic diagram of a layer structure of the white light series connection organic electroluminescence device of the embodiment of the present invention 7；
Fig. 8 is the performance map of the white light series connection organic electroluminescence device of the embodiment of the present invention 1.
Specific implementation mode
The present invention is specifically described with reference to embodiment, in order to technical field personnel to the present invention
Understand.It is necessary to it is emphasized that embodiment is only intended to, the present invention will be further described herein, should not be understood as to this
The limitation of invention protection domain, fields person skilled in the art, the non-intrinsically safe that the present invention is made according to foregoing invention content
The modifications and adaptations of property, should still fall within protection scope of the present invention.Mentioned raw materials following simultaneously are unspecified, are
Commercial product；The processing step or preparation method not referred in detail be processing step known to a person skilled in the art or
Preparation method.
Embodiment 1
A kind of white light series connection organic electroluminescent device, the structure of the device are：
ITO/HAT-CN(100nm)/NPB(15nm)/TCTA(5nm)/TCTA：FIrpic (10nm, 8%)/26DCzPPy：
FIrpic (10nm, 20%)/PO-01 (0.5nm)/TmPyPB (15nm)/Bepp2：KBH4 (10nm, 15%)/HAT-CN
(100nm)/NPB(15nm)/TCTA(5nm)/TCTA：FIrpic (10nm, 8%)/26DCzPPy：FIrpic (10nm, 20%)/
PO-01(0.5nm)//TmPyPB(50nm)/Cs2CO3(1nm)/Al(200nm)。
The structure of the device is as described in Figure 1, is added successively by following stacking：Substrate, anode, hole injection layer, hole pass
Defeated layer 1, hole transmission layer 2, doping blu-ray layer, undoped yellow light layer, electron transfer layer, electron injecting layer, charge generating layers, sky
Cave implanted layer, hole transmission layer, doping blu-ray layer, undoped yellow light layer, electron transfer layer, electron injecting layer, cathode.
1 device finished product of embodiment obtained by the present embodiment is subjected to performance detection, efficiency chart is as shown in figure 8, be the reality
The maximal efficiency for applying 1 device finished product of example is 65cd/A.
Embodiment 2
A kind of white light series connection organic electroluminescent device, the structure of the device are：
ITO/HAT-CN(100nm)/NPB(15nm)/PO-01(0.5nm)/m-MTDATA(3nm)/TCTA：FIrpic
(10nm, 8%)/TmPyPB (15nm)/Bepp2：KBH4 (10nm, 15%)/HAT-CN (100nm)/NPB (15nm)/TCTA
(5nm)/PO-01(0.5nm)/Bphen(1.5nm)/TCTA：FIrpic (10nm, 8%)/TmPyPB (50nm)/Cs2CO3
(1nm)/Al(200nm)。
The structure of the device is as described in Figure 2, is added successively by following stacking：Substrate, anode, hole injection layer, hole pass
Defeated layer, undoped yellow light layer, undoped wall, doping blu-ray layer, electron transfer layer, electron injecting layer, charge generating layers, sky
Cave implanted layer, hole transmission layer, undoped yellow light layer, undoped wall, doping blu-ray layer, electron transfer layer, electron injection
Layer, cathode.
2 device finished product of embodiment obtained by the present embodiment is subjected to performance detection, it is 63.5cd/A to measure its maximal efficiency.
Embodiment 3
A kind of white light series connection organic electroluminescent device, the structure of the device are：
ITO/HAT-CN(100nm)/NPB(15nm)/PO-01(0.5nm)/TCTA：FIrpic (10nm, 8%)/TmPyPB
(15nm)/Bepp2：KBH4 (10nm, 15%)/HAT-CN (100nm)/NPB (15nm)/TCTA (5nm)/Ir (piq)3
(0.3nm)/TCTA：FIrpic (10nm, 8%)/TmPyPB (50nm)/Cs2CO3(1nm)/Al(200nm)。
The structure of the device is as described in Figure 3, is added successively by following stacking：Substrate, anode, hole injection layer, hole pass
Defeated layer, undoped yellow light layer, doping blu-ray layer, electron transfer layer, electron injecting layer, charge generating layers, hole injection layer, hole
Transport layer, undoped feux rouges layer, doping blu-ray layer, electron transfer layer, electron injecting layer, cathode.
3 device finished product of embodiment obtained by the present embodiment is subjected to performance detection, it is 71.8cd/A to measure its maximal efficiency.
Embodiment 4
A kind of white light series connection organic electroluminescent device, the structure of the device are：
ITO/HAT-CN(100nm)/NPB(15nm)/Ir(piq)3(0.3nm)/Ir(ppy)3(0.3nm)/26DCzPPy：
FIrpic (10nm, 20%)/TmPyPB (15nm)/Bepp2：KBH4 (10nm, 15%)/HAT-CN (100nm)/NPB (15nm)/
TCTA(5nm)/Ir(piq)3(0.3nm)/Ir(ppy)3(0.3nm)/TCTA：FIrpic (10nm, 8%)/TmPyPB (50nm)/
Cs2CO3(1nm)/Al(200nm)。
The structure of the device is as described in Figure 4, is added successively by following stacking：Substrate, anode, hole injection layer, hole pass
Defeated layer, undoped feux rouges layer, non-doping green layer, doping blu-ray layer, electron transfer layer, electron injecting layer, charge generating layers, sky
Cave implanted layer, hole transmission layer, undoped feux rouges layer, non-doping green layer, doping blu-ray layer, electron transfer layer, electron injection
Layer, cathode.
4 device finished product of embodiment obtained by the present embodiment is subjected to performance detection, it is 69cd/A to measure its maximal efficiency.
Embodiment 5
A kind of white light series connection organic electroluminescent device, the structure of the device are：
ITO/HAT-CN(100nm)/NPB(15nm)/Ir(piq)3(0.3nm)/TAPC(3nm)/PO-01(0.5nm)/
TAPC(3nm)/26DCzPPy：FIrpic (10nm, 20%)/TmPyPB (15nm)/Bepp2：KBH4 (10nm, 15%)/HAT-
CN(100nm)/NPB(15nm)/TCTA(5nm)/Ir(piq)3(0.3nm)/TPBi(1.5nm)/PO-01(0.5nm)/TPBi
(1.5nm)/TCTA：FIrpic (10nm, 8%)/TmPyPB (50nm)/Cs2CO3(1nm)/Al(200nm)。
The structure of the device is as described in Figure 5, is added successively by following stacking：Substrate, anode, hole injection layer, hole pass
Defeated layer, undoped feux rouges layer, undoped wall, undoped yellow light layer, undoped wall, doping blu-ray layer, electron-transport
Layer, charge generating layers, hole injection layer, hole transmission layer, undoped feux rouges layer, undoped wall, non-is mixed electron injecting layer
Miscellaneous yellow light layer, undoped wall, doping blu-ray layer, electron transfer layer, electron injecting layer, cathode.
5 device finished product of embodiment obtained by the present embodiment is subjected to performance detection, it is 72cd/A to measure its maximal efficiency.
Embodiment 6
A kind of white light series connection organic electroluminescent device, the structure of the device are：
ITO/HAT-CN(100nm)/NPB(15nm)/PO-01(0.5nm)/26DCzPPy：FIrpic (10nm, 20%)/
TmPyPB(15nm)/Bepp2：KBH4 (10nm, 15%)/HAT-CN (100nm)/NPB (15nm)/TCTA (5nm)/Ir (piq)3
(0.3nm)/Ir(ppy)3(0.3nm)/TCTA：FIrpic (10nm, 8%)/TmPyPB (50nm)/Cs2CO3(1nm)/Al
(200nm)。
The structure of the device is as described in Figure 6, is added successively by following stacking：Substrate, anode, hole injection layer, hole pass
Defeated layer, undoped yellow light layer, doping blu-ray layer, electron transfer layer, electron injecting layer, charge generating layers, hole injection layer, hole
Transport layer, undoped feux rouges layer, non-doping green layer, doping blu-ray layer, electron transfer layer, electron injecting layer, cathode.
6 device finished product of embodiment obtained by the present embodiment is subjected to performance detection, it is 70cd/A to measure its maximal efficiency.
Embodiment 7
A kind of white light series connection organic electroluminescent device, the structure of the device are：
ITO/HAT-CN(100nm)/NPB(15nm)/Ir(piq)3(0.3nm)/26DCzPPy：FIrpic (10nm,
20%)/TmPyPB (15nm)/Bepp2：KBH4 (10nm, 15%)/HAT-CN (100nm)/NPB (15nm)/TCTA (5nm)/Ir
(piq)3(0.3nm)/Ir(ppy)3(0.3nm)/TCTA：FIrpic (10nm, 8%)/TmPyPB (50nm)/Cs2CO3(1nm)/
Al(200nm)。
The structure of the device is as described in Figure 7, is added successively by following stacking：Substrate, anode, hole injection layer, hole pass
Defeated layer, undoped feux rouges layer, doping blu-ray layer, electron transfer layer, electron injecting layer, charge generating layers, hole injection layer, hole
Transport layer, undoped feux rouges layer, non-doping green layer, doping blu-ray layer, electron transfer layer, electron injecting layer, cathode.
7 device finished product of embodiment obtained by the present embodiment is subjected to performance detection, it is 68cd/A to measure its maximal efficiency.
Above-described embodiment is the preferred embodiment of the present invention, it is all with similar technique of the invention and made by equivalence changes,
The protection category of the present invention should all be belonged to.
Claims (10)
- The organic electroluminescence device 1. a kind of white light is connected, it is characterised in that：Including substrate, anode, cathode and between the sun At least two layers of white-light emitting elementary layer between pole and cathode passes through electricity between described two layers adjacent white-light emitting elementary layer Lotus generation layer is connected, and the white-light emitting layer includes organic function layer, and the organic function layer includes that at least one layer of doping is blue Photosphere and at least one layer of undoped complementary luminescent layer, at least one layer of doping blu-ray layer and at least one layer of undoped mutual White light is obtained after reissuing photochromic mixing caused by photosphere.
- The organic electroluminescence device 2. a kind of white light according to claim 1 is connected, it is characterised in that：At least one layer Undoped complementary luminescent layer include at least one photochromic.
- The organic electroluminescence device 3. a kind of white light according to claim 1 is connected, it is characterised in that：The white-light emitting The doping blu-ray layer of elementary layer is up to two layers.
- The organic electroluminescence device 4. a kind of white light according to claim 1 is connected, it is characterised in that：The white-light emitting It is equipped with wall between doping blu-ray layer and undoped complementary luminescent layer in elementary layer.
- The organic electroluminescence device 5. a kind of white light according to claim 4 is connected, it is characterised in that：The wall is Undoped wall.
- The organic electroluminescence device 6. a kind of white light according to claim 1 is connected, it is characterised in that：The doping blue light The main body of doping blue light is bipolarity main body in layer.
- The organic electroluminescence device 7. a kind of white light according to claim 1 is connected, it is characterised in that：The doping blue light The thickness of layer and undoped complementary luminescent layer is 0.01~200nm.
- The organic electroluminescence device 8. a kind of white light according to claim 4 is connected, it is characterised in that：The wall Thickness is 0.01~30nm.
- The organic electroluminescence device 9. a kind of white light according to claim 1 is connected, it is characterised in that：The organic functions Layer further includes another positioned at the electron injecting layer of the organic function layer side, electron transfer layer and positioned at the organic function layer Hole transmission layer, the hole injection layer of side.
- The organic electroluminescence device 10. a kind of white light according to claim 2 is connected, it is characterised in that：It is described undoped One of which in the undoped yellow light layer of the luminous layer choosing of complementation, undoped feux rouges layer, non-doping green layer.
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| CN110246976A (en) * | 2019-05-10 | 2019-09-17 | 广东工业大学 | A kind of blue green light prepares white light organic electroluminescent device |
| WO2021035418A1 (en) * | 2019-08-23 | 2021-03-04 | 京东方科技集团股份有限公司 | Display substrate and fabrication method therefor |
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| CN104393184A (en) * | 2014-11-18 | 2015-03-04 | 深圳市华星光电技术有限公司 | White-light OLED display screen and tandem type white-light organic light emitting diode thereof |
| CN106992256A (en) * | 2017-04-24 | 2017-07-28 | 广东工业大学 | A kind of white color organic electroluminescence device |
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| CN106992256A (en) * | 2017-04-24 | 2017-07-28 | 广东工业大学 | A kind of white color organic electroluminescence device |
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| WO2021035418A1 (en) * | 2019-08-23 | 2021-03-04 | 京东方科技集团股份有限公司 | Display substrate and fabrication method therefor |
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