CN107863445A - A kind of white light OLED device with exchange driving - Google Patents
A kind of white light OLED device with exchange driving Download PDFInfo
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- CN107863445A CN107863445A CN201711039635.2A CN201711039635A CN107863445A CN 107863445 A CN107863445 A CN 107863445A CN 201711039635 A CN201711039635 A CN 201711039635A CN 107863445 A CN107863445 A CN 107863445A
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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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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3225—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED] using an active matrix
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- Optics & Photonics (AREA)
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Abstract
The invention belongs to Organic Light Emitting Diode lighting technical field, discloses a kind of white light OLED device with exchange driving, and the white light OLED device includes the first luminescence unit, the second luminescence unit, and the connection electrode layer between above-mentioned two luminescence unit；What the first luminescence unit and the second luminescence unit were sent is white light；In use, connection electrode layer is connected with one end of AC power, the first luminescence unit and the second luminescence unit are connected with the other end of AC power respectively, form two groups of illuminating circuits in parallel；First luminescence unit is driven in the positive period of AC signal, second luminescence unit is driven in the negative cycle of AC signal, realize exchange driving direct current white light OLED device, and it can reach the effect of no stroboscopic, relative size and frequency independent of positive/negative voltage signal, metastable white light is obtained, and make it that the white light OLED device of the present invention is more diversified using phosphor.
Description
Technical field
The invention belongs to Organic Light Emitting Diode (OLED) lighting technical field, and in particular to a kind of with the white of exchange driving
Light OLED.
Background technology
Organic Light Emitting Diode OLED is illumination and the Display Technique of a kind of great development prospect, and it has very excellent
Performance, in OLED lighting fields, the device has the spies such as caloric value is low, power consumption is small, reaction speed is fast, flexible, impact resistance
Property, while there is the characteristics of frivolous, face is luminous, good ductility, it can abandon all lampshade designs, heat abstractor part etc.
Deng new design concept can be brought to lighting field, the prospect that OLED is applied to lighting field is huge, it is expected to illuminated as future
Main flow.
With the development of semiconductor illumination technique, various emitting device structures are constantly suggested, AC signal driving OLED
Device technology is one of them.It can directly be run under 220V and 50HZ working environment for a kind of, be easy to be directly integrated
There is urgent demand in the exchange driving direct current OLED of alternating electron component.
Periodical Light:" the Get it white that Science＆Applications (2015) is published:color-
Technical scheme disclosed in the texts of tunable AC/DC OLEDs " one, using a kind of OLED of layer structure, there are two to light
Unit (two luminescence unit Yellow light-emitting low temperatures and blue light), in its layer structure, the polarity of transparent conductive electrode and negative electrode is with being applied to
The opposite polarity of alternating voltage on connection electrode layer；Realized by this hierarchical structure and exchange type of drive design
When the positive and negative signal frequency of AC signal is relatively large, the exchange driving direct current white light of flicker free can be obtained.But the technical side
The defects of case, is the exchange driving direct current white light that only when positive and negative signal frequency is relatively large, can just obtain flicker free.
A kind of OLED surface illuminators of AC power driving disclosed in Publication No. CN106972108A Chinese patent
Part, two luminescence units are designed respectively within two half periods of AC power by the special construction of two luminescence units
It is alternately luminous, so as to reach OLED in the complete period of exchange all luminous and without stroboscopic purpose；But have a disadvantage in that two
The shared anode thin film of luminescence unit or negative film produce hole or the efficiency comparison of electronics is low, cause the AC power to drive
OLED surface luminescent device luminous efficiency it is not high.
The content of the invention
For the disadvantages described above or Improvement requirement of prior art, the invention provides a kind of white light OLED with exchange driving
Device, the technical problem relatively low its object is to solve the OLED luminous efficiency of prior art exchange driving.
To achieve the above object, according to one aspect of the present invention, there is provided a kind of white light OLED device with exchange driving
Part, the device include the first luminescence unit, the second luminescence unit, and the electrode connection between above-mentioned two luminescence unit
Layer；First luminescence unit, the second luminescence unit and connection electrode layer are respectively provided with the interface for connecting alternating current；
In use, connection electrode layer is connected with one end of AC power, the first luminescence unit and the second luminescence unit with
The other end of AC power is connected, and forms two groups of illuminating circuits in parallel；Positive period quilt of first luminescence unit in AC signal
Driving, connection electrode layer produces electronics or hole, the second luminescence unit are driven in the negative cycle of AC signal, connection electrode layer
Hole or electronics are produced, realizes exchange driving direct current OLED；
Comparatively speaking, positive pole when then being worked according to anode thin film in the exchange driving direct current OLED of prior art
Film produces hole, and negative film produces electronics when then being worked according to negative film；Its anode thin film or negative film not with
Outside alternating current is connected, and the generation in electronics or hole relies solely on anode thin film and negative film swashing by external electrical field
Hair, related to the material of anode thin film and negative film itself, efficiency is very low, causes unbalanced carrier to inject, therefore
The luminous efficiency of its OLED formed is also very low；And the above-mentioned direct current OLED devices with exchange driving provided by the invention
Part, its connection electrode layer in use are directly electrically connected with external communication, and connection electrode layer produces electricity in the positive period of alternating current
Son or hole, produce hole in the negative cycle of alternating current or electronics, efficiency are greatly improved, and then improve what is formed
The luminous efficiency of OLED.
Preferably, the above-mentioned white light OLED device with exchange driving, its first luminescence unit include the conduction stacked gradually
Electrode, hole injection layer, hole transmission layer, luminescent layer, electron transfer layer, electron injecting layer；
Its second luminescence unit include stack gradually hole injection layer, hole transmission layer, luminescent layer, electron transfer layer,
Electron injecting layer, conductive electrode；
Wherein, the conductive electrode opposite polarity of the conductive electrode of the first luminescence unit and the second luminescence unit；
In use, alternating voltage pole added by the conductive electrode of the conductive electrode of the first luminescence unit and the second luminescence unit
Property is consistent；And the polarity of alternating voltage added by connection electrode layer and the opposite polarity of alternating voltage added by two luminescence units；Make
AC signal certain luminescence unit of half-cycle driving first send white light, in addition the luminescence unit of half-cycle driving second send it is white
Light；
The frequency of usual mains signal is 50Hz, and the time that the luminescent layer of above-mentioned two luminescence unit excites is remote
Less than 50Hz, the distinguishable highest frequency of human eye is 24HZ, that is, reacting once needs 0.042s, therefore is driven with 50Hz alternating current
The effect of no stroboscopic can be reached by moving this OLED.
Preferably, the above-mentioned white light OLED device with exchange driving, its first luminescence unit include the conduction stacked gradually
Electrode, electron injecting layer, electron transfer layer, luminescent layer, hole transmission layer, hole injection layer；Its second luminescence unit include according to
Electron injecting layer, electron transfer layer, luminescent layer, hole transmission layer, hole injection layer, the conductive electrode of secondary stacking.
Preferably, the above-mentioned white light OLED device with exchange driving, emitting layer material is using luminous organic material, inorganic hair
Luminescent material, the one or more of organic-inorganic hybrid luminescent material.
Preferably, the above-mentioned white light OLED device with exchange driving, conductive electrode material are to be prepared by magnetron sputtering
ITO conductive films.
Preferably, the above-mentioned white light OLED device with exchange driving, connection electrode layer are that Ag and Au is combined, by splashing
Penetrate, spin coating or thermal evaporation prepare, have the high grade of transparency electrode layer；In order that connection electrode layer has more preferable injection, it is tied
Structure is Ag：Au：Ag sandwich structures, Au layers are arranged to grating structure；Wherein Ag thickness degree is 2nm, and Au thickness degree is 1nm；
By the design of mask during evaporation by the Ag of sandwich structure：Au：Ag connection electrode layers extract, and connect in electrode
Connecing the end deposition of layer has a thick Al electrodes of 100nm, then by conductor wire with connection electrode layer preferably and external communication
Electrical connection.
Preferably, the above-mentioned white light OLED device with exchange driving, the hole injection layer material of first, second luminescence unit
For MoO3, thickness is 5~20nm；First, second luminescence unit hole transport layer material is NPB, and thickness is 40~80nm.
Preferably, the above-mentioned white light OLED device with exchange driving, the electron transport layer materials of first, second luminescence unit
For TPBI, thickness is 10~20nm；The electron injecting layer material of first, second luminescence unit is Alq3:Li, wherein Li doping
Ratio is 10%；Electron injecting layer thickness is 5~20nm；
Because the mobility in electronics and hole is different, in order to preferably match the transmission of electronics and hole, by electronics and
The thickness of hole transmission layer is set within the above range, may be such that electronics and hole preferably combine to form exciton, favourable to improve
Luminous efficiency；Because electrode has injection barrier when injection, the thickness of electronics and hole injection layer is arranged on above-mentioned
In the range of, injection barrier can be reduced so that electronics and hole are preferably injected into transport layer, and it is luminous to be advantageous to further raising
Efficiency.
In general, by the contemplated above technical scheme of the present invention compared with prior art, it can obtain down and show
Beneficial effect：
(1) the white light OLED device provided by the invention with exchange driving, with periodical Light:Science&
" the Get it white that Applications (2015) is published:Disclosed in the texts of color-tunable AC/DC OLEDs " one
Technical scheme compare；On the one hand, the condition for obtaining white light in the prior art of the latter is the positive and negative letter for needing to rely on alternating current
The relative size of number voltage adjusts chromaticity coordinates to reach the effect of white light；And because two luminescence units are all sent in the present invention
White light, so the relative size of the positive negative signal voltage independent of alternating current；On the other hand, in technical scheme, when
The luminescent layer of first luminescence unit uses organic material, emitted white light, and the luminescent layer of the second luminescence unit is using organic material, hair
During white light, driving alternating current can be the alternating current of any waveform；The luminescent layer of first luminescence unit uses organic material, turned white
Light, and the luminescent layer of the second luminescence unit using inorganic material, emit white light when, driving alternating current can also be any waveform friendship
Stream electricity；And the latter is in the prior art, driving can only use square wave；According to the exchange electric drive of other waveforms, due to exchange
Electricity does not stop to change with the time, and the color of the light of output will be caused unstable, especially when driving ac frequency low more
Add obvious.And because two layers of luminescence unit sends white light in technical scheme, will not with the change of alternating current and
Change, so the color of output light is stable；Color is also very stable when frequency is low, the frequency independent of alternating current；
Therefore relative size and frequency of the technical scheme provided by the invention independent of the positive negative signal voltage of alternating current, no
Pipe is that the alternating current of what frequency and positive and negative relative size does not interfere with the effect to emit white light, and sustainable stabilization sends white light,
Therefore it can be directly used for the illumination under civil power；
(2) the white light OLED device provided by the invention with exchange driving, the China with Publication No. CN106972108A
A kind of OLED surface luminescent device of AC power driving disclosed in patent is compared, and difference is the first luminescence unit and the second hair
Connection electrode layer among light unit can be connected in external circuit；And connection electrode layer is directly connected into external communication electricity, electricity
Pole connects into caused electronics and hole directly by external communication electric control, and the injectability in the electronics of alternating current and hole is very
By force；Therefore there is the injection in the electronics that can improve device and hole, the beneficial effect of the luminous efficiency of device is greatly improved；
(3) the white light OLED device provided by the invention with exchange driving, its emitting layer material are not limited to organic luminous layer,
Phosphor or organic-inorganic hybrid luminescent material can also be used so that the variation of OLED luminescent devices.
Brief description of the drawings
Fig. 1 is the diagrammatic cross-section of one embodiment of the white light OLED device provided by the invention with exchange driving.
Fig. 2 is the knot of the connection electrode layer of one embodiment of the white light OLED device provided by the invention with exchange driving
Structure schematic diagram.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.As long as in addition, technical characteristic involved in each embodiment of invention described below
Conflict can is not formed each other to be mutually combined.
The section that Fig. 1 show one embodiment of the white light OLED device provided by the invention with exchange driving is illustrated
Figure；The OLED includes the first luminescence unit 310, the second luminescence unit 410, the electricity between above-mentioned two luminescence unit
Pole articulamentum 115, and play transparent light guide glass substrate 101；First luminescence unit 310, the and of the second luminescence unit 410
Connection electrode layer 115 is respectively provided with the interface for connecting alternating current；
Wherein, the first luminescence unit 310 includes the conductive electrode 103, hole injection layer 105, hole transport stacked gradually
Layer 107, first layer luminescent layer 109, electron transfer layer 111 and electron injecting layer 113；
Second luminescence unit 410 includes hole injection layer 117, hole transmission layer 119, the second layer luminescent layer stacked gradually
121st, electron transfer layer 123, electron injecting layer 125 and conductive electrode 127；Wherein, the conductive electrode of the first luminescence unit 310
103 and second luminescence unit 410 conductive electrode 127 opposite polarity；
Connection electrode layer 115 is arranged at the luminescence unit 410 of electron injecting layer 113 and second of the first luminescence unit 310
Between hole injection layer 117.
In use, connection electrode layer 115 is connected with one end of AC power, the first luminescence unit 310 and second is luminous single
Member 410 is connected with the other end of AC power, forms two groups of illuminating circuits in parallel；The conductive electrode of first luminescence unit
103 with the conductive electrode 127 of the second luminescence unit added by alternating voltage polarity it is consistent；And alternating current added by connection electrode layer 115
The polarity of pressure and the opposite polarity of alternating voltage added by two luminescence units so that the first luminescence unit 310 is in AC signal
Positive period is driven, and connection electrode layer 115 produces electronics or hole, and thus one of which illuminating circuit sends white light；Second hair
Light unit 410 is driven in the negative cycle of AC signal, and connection electrode layer produces hole or electronics, thus another group of illuminating circuit
White light is sent, realizes exchange driving direct current OLED.
In embodiment 1, the conductive electrode 103 of the first luminescence unit 310 is transparent conductive anode, the second luminescence unit
410 conductive electrode 127 is transparent conductive cathode；First luminescent layer 109 and the second luminescent layer 121 use organic light emission material
Material；First luminescent layer 109 and the second luminescent layer 121 pass through laminate stack by sending the luminescent material of three kinds of colors of RGB
Frame mode sends white light；The structure of connection electrode layer 115 is as shown in Fig. 2 Ag and Au to be prepared by the method for evaporation are combined
The high grade of transparency electrode, wherein, 201 be the first Ag layers, and 202 be to design thermal evaporation by mask to prepare Au layers, and 203 be the
Two Ag layers.
In example 2, the conductive electrode 103 of the first luminescence unit 310 is transparent conductive cathode, the second luminescence unit
410 conductive electrode 127 is transparent conductive anode；First luminescent layer 109 uses phosphor such as quantum dot, and second is luminous
Layer 121 uses luminous organic material；
First luminescent layer 109 and the second luminescent layer 121 pass through lamination by sending the luminescent material of three kinds of colors of RGB
The frame mode of storehouse sends white light or sends white light by way of RGB blending；Connection electrode layer 115 is led to be transparent
Electrode ITO, IZO or Ag nano wire and its high conductance electrode for being co-doped with mixture；Connection electrode layer 115 can by sputtering,
It is prepared by the method for evaporation or spin coating.
First luminescent layer 109, the second luminescent layer 121 can also use organic-inorganic hybrid luminescent material, for example perovskite knot
Organic-inorganic halide (the CH of structure3NH3MX3,CH3NH3=methyl amine (MA), M refer to metal, and X refers to halogen).
In embodiments of the present invention, the transparent conductive electrode that conductive electrode uses, material are to be prepared by magnetron sputtering
ITO conductive films.Connection electrode layer is that Ag and Au is combined, being prepared by sputtering, spin coating or thermal evaporation, has the high grade of transparency
Electrode layer；In order that connection electrode layer has more preferable injection, its structure is Ag：Au：Ag sandwich structures, wherein Ag thickness degree
It is 2nm, Au thickness degree is 1nm；Preferably uniformly contacted in order that electrode has with electron injecting layer and hole injection layer, by Au
Layer is arranged to grating structure；By the design of mask during evaporation by Ag：Au：Ag connection electrode layer extracts,
End deposition of the conductor wire away from connection electrode layer has the thick Al electrodes of 100nm, with cause connection electrode layer preferably with outside
Exchange electrical connection.
Hole injection layer and hole transmission layer and electron transfer layer and electron injecting layer in embodiment are steamed by heat
It is prepared by hair；The hole injection layer material of first, second luminescence unit is MoO3, thickness 5nm；First, second unit hole passes
Defeated layer material is NPB, thickness 65nm.The electron transport layer materials of first, second luminescence unit are TPBI, thickness 15nm；
The electron injecting layer material of first, second luminescence unit is Alq3:Li (Li doping ratio is 10%), thickness 10nm.
The luminescent layer in luminescent layer and the second luminescence unit in first luminescence unit can pass through evaporation or the side of spin coating
It is prepared by formula；Wherein, the light that the luminous organic material in the luminescent layer in the first luminescence unit is sent be blue light, gold-tinted, green glow or
One or more in feux rouges；Luminescent layer in second luminescence unit is phosphor, and the light sent and first light
The light that the luminous organic material of luminescent layer in unit is sent combines to form white light.
In specific implementation, the luminescent layer in the first luminescence unit is prepared by thermal evaporation, the material of the white-light emitting layer
Material component is CBP:Ir(MDQ)2(acac) (feux rouges)/CBP:Ir(mppy)3(green glow)/CBP:FIrpic (blue light)；Wherein CBP:
Ir(MDQ)2(acac) ratio is 1:0.06, thickness 15nm；CBP:Ir(mppy)3Ratio be 1:0.1, thickness 10nm；
CBP:FIrpic ratio is 1:0.03, thickness 20nm.Also CBP can be used:Ir(MDQ)2(acac)/TPBI/CGL/NPB/
CBP:Ir(mppy)3/ TPBI/CGL/NPB/FIrpic laminate stacks structure sends white light；Wherein, CGL is charge generation layer,
CGL constituent is CuPc:C60.Luminescent layer in second luminescence unit is prepared by thermal evaporation, the white-light emitting layer
Material component is CBP:Ir(MDQ)2(acac) (feux rouges)/CBP:Ir(mppy)3(green glow)/CBP:FIrpic (blue light) sends white
Light；Wherein CBP:Ir(MDQ)2(acac) ratio is 1:0.06, thickness 15nm；CBP:Ir(mppy)3Ratio be 1:0.1,
Thickness is 10nm；CBP:FIrpic ratio is 1:0.03, thickness 20nm.Also CBP can be used:Ir(MDQ)2(acac)/
TPBI/CGL/NPB/CBP:Ir(mppy)3/ TPBI/CGL/NPB/FIrpic laminate stacks structure sends white light.
As it will be easily appreciated by one skilled in the art that the foregoing is merely illustrative of the preferred embodiments of the present invention, not to
The limitation present invention, all any modification, equivalent and improvement made within the spirit and principles of the invention etc., all should be included
Within protection scope of the present invention.
Claims (8)
- A kind of 1. white light OLED device with exchange driving, it is characterised in that including the first luminescence unit, the second luminescence unit, And the connection electrode layer between first luminescence unit and the second luminescence unit；First luminescence unit, second Luminescence unit and connection electrode layer are respectively provided with the interface for connecting alternating current；In use, the connection electrode layer is connected with one end of AC power, first luminescence unit and the second luminescence unit It is connected with the other end of AC power, forms two groups of illuminating circuits；Positive period of first luminescence unit in AC signal Driven, connection electrode layer produces electronics or hole, second luminescence unit are driven in the negative cycle of AC signal, electrode Articulamentum produces hole or electronics.
- 2. as claimed in claim 1 with the white light OLED device of exchange driving, it is characterised in that the first luminescence unit bag Include the conductive electrode stacked gradually, hole injection layer, hole transmission layer, luminescent layer, electron transfer layer, electron injecting layer；Second luminescence unit includes hole injection layer, hole transmission layer, luminescent layer, electron transfer layer, the electricity stacked gradually Sub- implanted layer, conductive electrode；The conductive electrode of first luminescence unit and the conductive electrode opposite polarity of the second luminescence unit；In use, alternating voltage pole added by the conductive electrode of first luminescence unit and the conductive electrode of the second luminescence unit Property is consistent；And the polarity of alternating voltage added by connection electrode layer and the opposite polarity of alternating voltage added by two luminescence units；Make AC signal certain luminescence unit of half-cycle driving first send white light, in addition the luminescence unit of half-cycle driving second send it is white Light.
- 3. as claimed in claim 1 or 2 with the white light OLED device of exchange driving, it is characterised in that described first is luminous single Member includes conductive electrode, electron injecting layer, electron transfer layer, luminescent layer, hole transmission layer, the hole injection layer stacked gradually； Second luminescence unit includes electron injecting layer, electron transfer layer, luminescent layer, hole transmission layer, the hole note stacked gradually Enter layer, conductive electrode.
- 4. as claimed in claim 1 or 2 with the white light OLED device of exchange driving, it is characterised in that the emitting layer material Using luminous organic material, phosphor, organic-inorganic hybrid luminescent material one or more.
- 5. as claimed in claim 1 or 2 with the white light OLED device of exchange driving, it is characterised in that described first is luminous single The conductive electrode material of member is the ITO conductive films prepared by magnetron sputtering；The conductive electrode of the second described luminescence unit Material is the Al conductive films prepared by thermal evaporation.
- 6. as claimed in claim 1 or 2 with the white light OLED device of exchange driving, it is characterised in that the connection electrode layer Electrode layer combined for Ag and Au, being prepared by sputtering, spin coating or thermal evaporation, that there is the high grade of transparency；Its structure is Ag： Au：Ag sandwich structures, Au layers are arranged to grating structure；Wherein Ag thickness degree is 2nm, and Au thickness degree is 1nm；Pass through mask The design of version is during evaporation by Ag：Au：Ag connection electrode layer extracts, and in the end of connection electrode layer, deposition has Al electrodes thick 100nm, then be preferably connected by conductor wire connection electrode layer with external ac power source.
- 7. as claimed in claim 1 or 2 with the white light OLED device of exchange driving, it is characterised in that described first is luminous single Member, the hole injection layer material of the second luminescence unit are MoO3, thickness 5nm；First luminescence unit, the second luminescence unit Hole transport layer material is NPB, thickness 65nm.
- 8. as claimed in claim 1 or 2 with the white light OLED device of exchange driving, it is characterised in that described first is luminous single Member, the electron transport layer materials of the second luminescence unit are TPBI, thickness 15nm；First luminescence unit, the second luminous list The electron injecting layer material of member is Alq3:Li, wherein Li doping ratio are 10%；First luminescence unit, second light The electron injecting layer thickness of unit is 10nm.
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Cited By (6)
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| CN110838550A (en) * | 2018-08-15 | 2020-02-25 | Tcl集团股份有限公司 | Mixed type light-emitting diode and preparation method thereof |
| CN111354856A (en) * | 2018-12-24 | 2020-06-30 | Tcl集团股份有限公司 | Quantum dot light-emitting diode |
| WO2020232763A1 (en) * | 2019-05-23 | 2020-11-26 | 深圳市华星光电半导体显示技术有限公司 | Light-emitting device and driving method therefor, and display panel |
| CN113451521A (en) * | 2021-06-01 | 2021-09-28 | 深圳大学 | Quantum dot light-emitting diode device, preparation method thereof and display panel |
| CN113659087A (en) * | 2021-08-13 | 2021-11-16 | 苏州大学 | Alternating current driving organic light emitting diode device |
| US11737343B2 (en) | 2018-09-17 | 2023-08-22 | Excyton Limited | Method of manufacturing perovskite light emitting device by inkjet printing |
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| WO2020232763A1 (en) * | 2019-05-23 | 2020-11-26 | 深圳市华星光电半导体显示技术有限公司 | Light-emitting device and driving method therefor, and display panel |
| US11569407B2 (en) * | 2019-05-23 | 2023-01-31 | Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Display panel, light-emitting device, and driving method thereof |
| CN113451521A (en) * | 2021-06-01 | 2021-09-28 | 深圳大学 | Quantum dot light-emitting diode device, preparation method thereof and display panel |
| CN113659087A (en) * | 2021-08-13 | 2021-11-16 | 苏州大学 | Alternating current driving organic light emitting diode device |
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