CN109686853A - A kind of organic electroluminescence device of color-adjustable - Google Patents
A kind of organic electroluminescence device of color-adjustable Download PDFInfo
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- CN109686853A CN109686853A CN201811600579.XA CN201811600579A CN109686853A CN 109686853 A CN109686853 A CN 109686853A CN 201811600579 A CN201811600579 A CN 201811600579A CN 109686853 A CN109686853 A CN 109686853A
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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
- 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
- H10K50/125—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light
- H10K50/13—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit
- H10K50/131—OLEDs or polymer light-emitting diodes [PLED] characterised by the electroluminescent [EL] layers specially adapted for multicolour light emission, e.g. for emitting white light comprising stacked EL layers within one EL unit with spacer layers between the electroluminescent layers
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- 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
Abstract
The invention discloses a kind of organic electroluminescence devices of color-adjustable.The device successively includes glass substrate, ito film, hole injection layer, hole transmission layer, light emitting structure layer, electron transfer layer, electron injecting layer and metal electrode from top to bottom；Light emitting structure layer successively includes Yellow light emitting layer, transition zone and red light luminescent layer from top to bottom；The material of Yellow light emitting layer is mixed by 8-hydroxyquinoline aluminium and 4- (dimercapto methylene) -2- methyl -6- (to dimethylaminostyryl) -4H- pyrans；The material of transition zone is mixed by three (4- carbazole -9- base phenyl) amine and 8-hydroxyquinoline aluminium；The material of red light luminescent layer is mixed by three (4- carbazole -9- base phenyl) amine and (E) -4- dintrile methylene -2- tert-butyl -6- (1,1,7,7- tetramethyl julolidine vinyl) pyrans.Using the organic electroluminescence device of color-adjustable of the invention, have and reduce polychromatic light piece number, save lighting lamp occupied space, and automobile tail is avoided the advantages of part red light missing occur.
Description
Technical field
The present invention relates to organic electroluminescence device technical fields, more particularly to a kind of organic electroluminescent of color-adjustable
Device.
Background technique
With the development of science and technology, automotive luminaire technology, just after change, it is preferred that OLED is increasingly becoming high-end vehicle car light.Vapour
Tail-light needs large area feux rouges, while being also required to yellow and turning to signaling lamp.Currently, automobile tail light is realizing red and yellow hair
Light time needs to add the OLED lamp piece of part Yellow light-emitting low temperature in large area feux rouges, is will lead in this way using automobile feux rouges taillight
Automobile tail will appear the missing of part red light in the process.
Summary of the invention
The object of the present invention is to provide a kind of organic electroluminescence devices of color-adjustable, have and reduce polychromatic light piece number,
Save lighting lamp occupied space, and automobile tail is avoided the advantages of part red light missing occur.
To achieve the above object, the present invention provides following schemes:
A kind of organic electroluminescence device of color-adjustable, comprising:
Glass substrate, ito film, hole injection layer, hole transmission layer, light emitting structure layer, electron transfer layer, electron injecting layer
And metal electrode；The ito film is set to above glass substrate, and the hole injection layer is arranged in the ito film, the sky
Cave transport layer is arranged on the upper surface of the hole injection layer, and the upper of the hole transmission layer is arranged in the light emitting structure layer
On surface, the electron transfer layer is arranged on the upper surface of the light emitting structure layer, and the electron injecting layer is arranged described
On the upper surface of electron transfer layer, the metal electrode is arranged on the upper surface of the electron injecting layer；
The light emitting structure layer, comprising: Yellow light emitting layer, transition zone and red light luminescent layer；The Yellow light emitting layer setting
On the upper surface of the electron transfer layer, the transition zone is arranged in the transition zone and the upper of the Yellow light emitting layer is arranged in
On surface, the red light luminescent layer is arranged on the upper surface of the transition zone, and the hole transmission layer is arranged in the feux rouges
On the upper surface of luminescent layer；
The material of the Yellow light emitting layer is by 8-hydroxyquinoline aluminium and 4- (dimercapto methylene) -2- methyl -6- (to diformazan
Aminostyryl) -4H- pyrans mixes；The material of the transition zone is by three (4- carbazole -9- base phenyl) amine and 8- hydroxyl
Quinoline aluminum mixes；The material of the red light luminescent layer is by three (4- carbazole -9- base phenyl) amine and (E) -4- dintrile methylene -
2- tert-butyl -6- (1,1,7,7- tetramethyl julolidine vinyl) pyrans mixes.
Optionally, the light emitting structure layer, further includes: deielectric-coating；Deielectric-coating setting the electron transfer layer with
Among the Yellow light emitting layer.
Optionally, the material of the deielectric-coating is 8-hydroxyquinoline aluminium；The deielectric-coating with a thickness of 3-8nm.
Optionally, the Yellow light emitting layer with a thickness of 3-10nm；The transition zone with a thickness of 5-10nm；The feux rouges
Luminescent layer with a thickness of 10-20nm.
Optionally, the ito film with a thickness of 140-160nm；The hole injection layer with a thickness of 5-12nm；The sky
Cave transport layer with a thickness of 30-40nm；The electron transfer layer with a thickness of 30-60nm；The electron injecting layer with a thickness of
0.5-1nm；The metal electrode with a thickness of 100-200nm.
Optionally, the material of the hole injection layer be N, N '-diphenyl-N, N '-(1- naphthalene) -1,1 '-biphenyl -4,
4 '-diamines；The material of the hole transmission layer is three (4- carbazole -9- base phenyl) amine；The material of the electron transfer layer is 4,
7- diphenyl -1,10- phenanthroline；The material of the electron injecting layer is (8-hydroxyquinoline)-lithium；The material of the metal electrode
For aluminium.
Optionally, the material of the hole injection layer is 4,4', 4 "-three [2- naphthylphenyl amino] triphenylamines.
Optionally, the doping of three (4- carbazole -9- base phenyl) amine and 8-hydroxyquinoline aluminium of the transition zone is compared for 1:3.
Optionally, the doping of three (4- carbazole -9- base phenyl) amine and 8-hydroxyquinoline aluminium of the transition zone is compared for 1:5.
Optionally, the 8-hydroxyquinoline aluminium of the Yellow light emitting layer and 4- (dimercapto methylene) -2- methyl -6- are (to two
Methylamino styryl) doping of -4H- pyrans compares for 23:2；Three (4- carbazole -9- base phenyl) amine of the red light luminescent layer and
(E) doping of -4- dintrile methylene -2- tert-butyl -6- (1,1,7,7- tetramethyl julolidine vinyl) pyrans is compared for 23:2.
Compared with prior art, the beneficial effects of the present invention are:
The invention proposes a kind of organic electroluminescence devices of color-adjustable, to the light emitting structure layer of traditional OLED device
Improvement is made, light emitting structure layer includes Yellow light emitting layer, transition zone and red light luminescent layer, and the material of Yellow light emitting layer is by 8- hydroxyl
Quinoline aluminum and 4- (dimercapto methylene) -2- methyl -6- (to dimethylaminostyryl) -4H- pyrans mix, transition zone
Material mixed by three (4- carbazole -9- base phenyl) amine and 8-hydroxyquinoline aluminium；The material of red light luminescent layer is by three (4- clicks
Azoles -9- base phenyl) amine and (E) -4- dintrile methylene -2- tert-butyl -6- (1,1,7,7- tetramethyl julolidine vinyl) pyrrole
It mutters and mixes；When applying lower voltage in OLED device, hole and electronics are combined in Yellow light emitting layer, issue yellow light；?
When applying high voltage in OLED device, hole and electronics are combined in red light luminescent layer, issue feux rouges.The present invention is by changing electricity
It presses size to realize the OLED lamp of color-adjustable, the occupied space of headlamp can be reduced and reduces polychromatic light piece number, reduce system
Make the cost of OLED headlamp.
Detailed description of the invention
It in order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, below will be to institute in embodiment
Attached drawing to be used is needed to be briefly described, it should be apparent that, the accompanying drawings in the following description is only some implementations of the invention
Example, for those of ordinary skill in the art, without any creative labor, can also be according to these attached drawings
Obtain other attached drawings.
Fig. 1 is the organic electroluminescence device structure chart of color-adjustable in the embodiment of the present invention.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
The object of the present invention is to provide a kind of organic electroluminescence devices of color-adjustable, have and reduce polychromatic light piece number,
Save lighting lamp occupied space, and automobile tail is avoided the advantages of part red light missing occur.
In order to make the foregoing objectives, features and advantages of the present invention clearer and more comprehensible, with reference to the accompanying drawing and specific real
Applying mode, the present invention is described in further detail.
Embodiment
Fig. 1 is figure of the embodiment of the present invention.As shown in Figure 1, a kind of organic electroluminescence of color-adjustable provided by the invention
Part characterized by comprising glass substrate 1, ito film 2, hole injection layer 3, hole transmission layer 4, light emitting structure layer, electronics pass
Defeated layer 8, deielectric-coating 9, electron injecting layer 10 and metal electrode 11.The ito film 2 is set to 1 top of glass substrate, the hole
Implanted layer 3 is arranged in the ito film 2, and the hole transmission layer 4 is arranged on the upper surface of the hole injection layer 3, described
Light emitting structure layer is arranged on the upper surface of the hole transmission layer 4, and the electron transfer layer 8 is arranged in the light emitting structure layer
Upper surface on, the electron injecting layer 10 is arranged on the upper surface of the electron transfer layer 8, and the metal electrode 11 is arranged
On the upper surface of the electron injecting layer 10.
The ito film 2 with a thickness of 140-160nm；The hole injection layer 3 with a thickness of 5-12nm；The hole passes
Defeated layer 4 with a thickness of 30-40nm；The electron transfer layer 8 with a thickness of 30-60nm；Electron injecting layer with a thickness of 0.5-
1nm；Metal electrode with a thickness of 100-200nm.The material of the hole injection layer 3 is N, N '-diphenyl-N, N '-(1- naphthalene
Base) -1,1 '-biphenyl -4,4 '-diamines；The material of the hole injection layer 3 may be 4,4', 4 "-three [2- naphthylphenyl ammonia
Base] triphenylamine.The material of the hole transmission layer 4 is three (4- carbazole -9- base phenyl) amine；The material of the electron transfer layer 8
Matter is 4,7- diphenyl -1,10- phenanthroline；The material of the electron injecting layer 10 is 8-hydroxyquinoline)-lithium；The metal electricity
The material of pole 11 is aluminium.
The light emitting structure layer, comprising: Yellow light emitting layer 5, transition zone 6 and red light luminescent layer 7；The Yellow light emitting layer 5
It is arranged on the upper surface of the electron transfer layer 8, the setting of transition zone 6 is sent out in the transition zone 6 setting in the yellow light
On the upper surface of photosphere 5, the red light luminescent layer 7 is arranged on the upper surface of the transition zone 6, and the hole transmission layer 4 is set
It sets on the upper surface of the red light luminescent layer 7.
The material of the Yellow light emitting layer 5 is by 8-hydroxyquinoline aluminium and 4- (dimercapto methylene) -2- methyl -6- (to two
Methylamino styryl) -4H- pyrans mixes；The material of the transition zone 6 is by three (4- carbazole -9- base phenyl) amine and 8-
Hydroxyquinoline aluminum mixes；The material of the red light luminescent layer 7 is sub- by three (4- carbazole -9- base phenyl) amine and (E) -4- dintrile
Methyl -2- tert-butyl -6- (1,1,7,7- tetramethyl julolidine vinyl) pyrans mixes.The Yellow light emitting layer 5
With a thickness of 3-10nm；The transition zone 6 with a thickness of 5-10nm；The red light luminescent layer 7 with a thickness of 10-20nm.The mistake
The doping for crossing three (4- carbazole -9- base phenyl) amine and 8-hydroxyquinoline aluminium of layer 6 is compared for 1:3 or is 1:5.The Yellow light emitting
The 8-hydroxyquinoline aluminium and 4- (dimercapto methylene) -2- methyl -6- (to dimethylaminostyryl) -4H- pyrans of layer are mixed
Miscellaneous ratio is 23:2；Three (4- carbazole -9- base phenyl) amine and (E) -4- dintrile methylene -2- tert-butyl-of the red light luminescent layer
The doping of 6- (1,1,7,7- tetramethyl julolidine vinyl) pyrans is compared for 23:2.
Among the electron transfer layer 8 with the Yellow light emitting layer 5, the material of deielectric-coating 9 is for the setting of deielectric-coating 9
8-hydroxyquinoline aluminium；The deielectric-coating 9 with a thickness of 3-8nm.Deielectric-coating 9 is used as a kind of hole blocking layer, and hole is stopped to enter
Electronic shell.
When applying different voltages, the light of different colours can be issued.Apply on the organic electroluminescence device of color-adjustable
When lower voltage, the transmittability of electronics is poor can not to pass through too many organic layer, and the transmittability in hole is good, hole and electronics
It will be combined in Yellow light emitting layer, issue yellow light.When applying high voltage on the device, the transmittability of electronics is strengthened
Across organic layer, hole and electronics will be combined in red light luminescent layer, issue feux rouges.And in modification transition zone three can be passed through
The doping ratio of (4- carbazole -9- base phenyl) amine and 8-hydroxyquinoline aluminium adjusts control voltage.
Issue yellow light and feux rouges principle are as follows: when electrons and holes are met in luminescent layer, complex effect can be generated, it is compound
Exciton is generated in the process, and exciton migrates under the action of electric field, and energy is transferred to the dopant material in luminescent layer, dopant material
In Electron absorption energy after, from ground state transition to excitation state because excitation state be it is unstable, electrons from excitation state again
Ground state is returned in transition, is given off energy simultaneously, and photon is generated, and according to the difference of luminescent material excited level, electronics is returned in transition
The photon that different-energy is released during ground state, according to formula E=hv, energy determines the wavelength of light, and wavelength means
The color of light.The energy of Yellow light emitting layer photon meets the wavelength of yellow light, issues yellow light, and the energy of red light luminescent layer photon meets
The wavelength of feux rouges issues feux rouges.
Used herein a specific example illustrates the principle and implementation of the invention, and above embodiments are said
It is bright to be merely used to help understand method and its core concept of the invention；At the same time, for those skilled in the art, foundation
Thought of the invention, there will be changes in the specific implementation manner and application range.In conclusion the content of the present specification is not
It is interpreted as limitation of the present invention.
Claims (10)
1. a kind of organic electroluminescence device of color-adjustable characterized by comprising
Glass substrate, ito film, hole injection layer, hole transmission layer, light emitting structure layer, electron transfer layer, electron injecting layer and gold
Belong to electrode；The ito film is set to above glass substrate, and the hole injection layer is arranged in the ito film, and the hole passes
Defeated layer is arranged on the upper surface of the hole injection layer, and the upper surface of the hole transmission layer is arranged in the light emitting structure layer
On, the electron transfer layer is arranged on the upper surface of the light emitting structure layer, and the electron injecting layer is arranged in the electronics
On the upper surface of transport layer, the metal electrode is arranged on the upper surface of the electron injecting layer；
The light emitting structure layer, comprising: Yellow light emitting layer, transition zone and red light luminescent layer；The Yellow light emitting layer is arranged in institute
It states on the upper surface of electron transfer layer, the upper surface that the Yellow light emitting layer is arranged in the transition zone is arranged in the transition zone
On, the red light luminescent layer is arranged on the upper surface of the transition zone, and the hole transmission layer is arranged in the red light-emitting
On the upper surface of layer；
The material of the Yellow light emitting layer is by 8-hydroxyquinoline aluminium and 4- (dimercapto methylene) -2- methyl -6- (to dimethylamino
Styryl) -4H- pyrans mixes；The material of the transition zone is by three (4- carbazole -9- base phenyl) amine and 8-hydroxyquinoline
Aluminium mixes；The material of the red light luminescent layer is by three (4- carbazole -9- base phenyl) amine and (E) -4- dintrile methylene -2- uncle
Butyl -6- (1,1,7,7- tetramethyl julolidine vinyl) pyrans mixes.
2. the organic electroluminescence device of color-adjustable according to claim 1, which is characterized in that the light emitting structure layer,
Further include: deielectric-coating；The deielectric-coating is arranged among the electron transfer layer and the Yellow light emitting layer.
3. the organic electroluminescence device of color-adjustable according to claim 2, which is characterized in that the material of the deielectric-coating
For 8-hydroxyquinoline aluminium；The deielectric-coating with a thickness of 3-8nm.
4. the organic electroluminescence device of color-adjustable according to claim 1, which is characterized in that the Yellow light emitting layer
With a thickness of 3-10nm；The transition zone with a thickness of 5-10nm；The red light luminescent layer with a thickness of 10-20nm.
5. the organic electroluminescence device of color-adjustable according to claim 1, which is characterized in that the thickness of the ito film
For 140-160nm；The hole injection layer with a thickness of 5-12nm；The hole transmission layer with a thickness of 30-40nm；The electricity
Sub- transport layer with a thickness of 30-60nm；The electron injecting layer with a thickness of 0.5-1nm；The metal electrode with a thickness of
100-200nm。
6. the organic electroluminescence device of color-adjustable according to claim 1, which is characterized in that the hole injection layer
Material is N, N '-diphenyl-N, N '-(1- naphthalene) -1,1 '-biphenyl -4,4 '-diamines；The material of the hole transmission layer is three
(4- carbazole -9- base phenyl) amine；The material of the electron transfer layer is 4,7- diphenyl -1,10- phenanthroline；The electron injection
The material of layer is (8-hydroxyquinoline)-lithium；The material of the metal electrode is aluminium.
7. the organic electroluminescence device of color-adjustable according to claim 1, which is characterized in that the hole injection layer
Material is 4,4', 4 "-three [2- naphthylphenyl amino] triphenylamines.
8. the organic electroluminescence device of color-adjustable according to claim 1, which is characterized in that the three of the transition zone
The doping of (4- carbazole -9- base phenyl) amine and 8-hydroxyquinoline aluminium is compared for 1:3.
9. the organic electroluminescence device of color-adjustable according to claim 1, which is characterized in that the three of the transition zone
The doping of (4- carbazole -9- base phenyl) amine and 8-hydroxyquinoline aluminium is compared for 1:5.
10. the organic electroluminescence device of color-adjustable according to claim 1, which is characterized in that the Yellow light emitting layer
8-hydroxyquinoline aluminium and 4- (dimercapto methylene) -2- methyl -6- (to dimethylaminostyryl) -4H- pyrans doping
Than for 23:2；Three (4- carbazole -9- base phenyl) amine and (E) -4- dintrile methylene -2- tert-butyl -6- of the red light luminescent layer
The doping of (1,1,7,7- tetramethyl julolidine vinyl) pyrans is compared for 23:2.
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| CN109686853B (en) | 2020-12-01 |
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