CN105428550B - A kind of organic electroluminescence device - Google Patents
A kind of organic electroluminescence device Download PDFInfo
- Publication number
- CN105428550B CN105428550B CN201510975755.8A CN201510975755A CN105428550B CN 105428550 B CN105428550 B CN 105428550B CN 201510975755 A CN201510975755 A CN 201510975755A CN 105428550 B CN105428550 B CN 105428550B
- Authority
- CN
- China
- Prior art keywords
- layer
- electrode
- film layer
- organic electroluminescence
- electroluminescence device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
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
- H10K50/80—Constructional details
- H10K50/85—Arrangements for extracting light from the devices
- H10K50/858—Arrangements for extracting light from the devices comprising refractive means, e.g. lenses
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10K—ORGANIC ELECTRIC SOLID-STATE DEVICES
- H10K50/00—Organic light-emitting devices
- H10K50/80—Constructional details
- H10K50/805—Electrodes
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
Organic electroluminescence device of the present invention stacks including substrate and sequentially the first electrode being disposed on the substrate, luminescent layer and second electrode；The first electrode includes the electrically conerolled birefringence film layer being stacked and several conductive film layers, and the ipsilateral of the electrically conerolled birefringence film layer is not arranged in entirely for the conductive film layer.Organic electroluminescence device of the present invention, the reflectivity of first electrode can be regulated and controled by electrically conerolled birefringence material, realize the regulation to microcavity length, while to realize excellent light extraction efficiency, also avoid the method that microcavity effect regulation is realized by the design of multilayer luminous layer structure in the prior art, device architecture is simple, technical maturity, effectively reduces production cost, improves the yield of product.
Description
Technical field
The present invention relates to field of organic electroluminescence, and in particular to a kind of organic electroluminescence device.
Background technique
Organic electroluminescence device (full name in English Organic Light-Emitting Device, abbreviation OLED) is main
Dynamic luminescent device has many advantages, such as that low-power consumption, colour gamut is wide, volume is thinner, is expected to become next-generation mainstream illumination and FPD
Technology.Organic electroluminescence device mostly uses the sandwich structure of sandwich-type, that is, organic layer is clipped between the electrode of two sides,
Hole and electronics are transmitted from two sides electrode injection, and in organic layer respectively, and exciton, exciton recombination luminescence are formed after meeting.
According to light from the difference of device exit direction, organic electroluminescence device is broadly divided into two kinds not in the prior art
Same structure: one is bottom luminescent device, light is projected from first electrode, is incident on air after overdrive circuit and substrate
In；Another kind is top illuminating device, and light is projected from second electrode.With the development of display technology, ORGANIC ELECTROLUMINESCENCE DISPLAYS
Device mostly uses active matrix driving mode, the light issued for bottom light emitting organic electroluminescence display device, Organic Light Emitting Diode
It projects the open area that can only be arranged from driving circuit；However, at least being wrapped in the driving circuit of each Organic Light Emitting Diode
Two thin film transistor (TFT)s and a capacitor are included, the aperture opening ratio of organic elctroluminescent device is greatly reduced.And it pushes up and shines
The above problem is then not present in organic elctroluminescent device, is gradually interested by researchers.
In the light emitting organic electroluminescence display device of top, second electrode is light-emitting surface, and the low work function of preferably clear is led
Electrolemma layer, due to the limitation of the prior art, second electrode is usually metallic diaphragm, is unable to reach fully transparent requirement, therefore, the
Two electrodes can only calculate translucent film layer；And in order to improve luminous efficiency, first electrode is frequently with catoptric arrangement, therefore, sends out on top
In light organic elctroluminescent device, first electrode, second electrode and the organic layer being clipped between the two are easily formed
Fabry-Perot type microcavity has following formula by the spectrum of second electrode emergent ray:
EoutOrganic elctroluminescent device goes out luminous intensity, EinIn organic layer dyestuff in a free state shine
Intensity, LiOptical thickness, R between distance, L- first electrode and second electrode of the complex centre apart from cathodemFirst electrode
Reflectivity, RdSecond electrode reflectivity.
From formula as can be seen that microcavity regulation is related to luminescent layer luminous intensity, centre of luminescence position, the centre of luminescence and second
How all multivariables such as reflectivity of the distance between electrode, first electrode and second electrode are answered by regulation with reducing minor effect
Influence to device is a huge challenge for research staff.
Summary of the invention
For this purpose, to be solved by this invention is existing the problem of microcavity effect is difficult in the prior art, one kind is provided
Structure is simple, easily regulates and controls the organic electroluminescence device of microcavity effect.
In order to solve the above technical problems, The technical solution adopted by the invention is as follows:
A kind of organic electroluminescence device of the present invention stacks including substrate and be sequentially disposed on the substrate first
Electrode, luminescent layer and second electrode；The first electrode includes the electrically conerolled birefringence film layer and several conductions being stacked
Film layer, the electrically conerolled birefringence film layer are set between conductive film layer.
The electrically conerolled birefringence film layer is transparent film layer.
The electrically conerolled birefringence film layer is PLZT ceramics (PLZT) film layer.
The electrically conerolled birefringence film layer with a thickness of 30-70nm.
At least one layer is reflective coating in the conductive film layer.
The side of the electrically conerolled birefringence film layer far from the second electrode is arranged in the reflective coating.
The reflectivity of the reflective coating is not less than 90%, with a thickness of 10-100nm.
The second electrode is transparent electrode.
Optical coupling output layer is additionally provided in the second electrode.
It is also stacked gradually between the first electrode and the luminescent layer and is provided with hole injection layer, hole transmission layer, electricity
One or more layers combination in sub- barrier layer；It is also stacked gradually between the luminescent layer and the second electrode and is provided with electronics
One or more layers combination in implanted layer, electron transfer layer and hole blocking layer.
The above technical solution of the present invention has the following advantages over the prior art:
Organic electroluminescence device of the present invention, including sequentially stacking the first electrode being disposed on the substrate, shining
Layer and second electrode；The first electrode includes the electrically conerolled birefringence film layer that is stacked and several conductive film layers, described
The ipsilateral of the electrically conerolled birefringence film layer is not arranged in entirely for conductive film layer.According to light output formula:
It is found that organic electroluminescence device of the present invention, can regulate and control first electrode by electrically conerolled birefringence material
Reflectivity, regulation to microcavity length is realized, thus while realizing excellent light extraction efficiency, it is thus also avoided that lead in the prior art
Cross the method that microcavity effect regulation is realized in the design of multilayer luminous layer structure, device architecture is simple, technical maturity, effectively reduces life
Cost is produced, the yield of product is improved.
Detailed description of the invention
In order to make the content of the present invention more clearly understood, it below according to specific embodiments of the present invention and combines
Attached drawing, the present invention is described in further detail, wherein
Fig. 1 is the structural schematic diagram of organic electroluminescence device described in the embodiment of the present invention 1.
Appended drawing reference indicates in figure are as follows: the first conductive film layer of 11-, the second conductive film layer of 12-, 13- third conductive film layer, 2-
Electrically conerolled birefringence film layer, 3- luminescent layer, 4- second electrode.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below in conjunction with attached drawing to reality of the invention
The mode of applying is described in further detail.
The present invention can be embodied in many different forms, and should not be construed as limited to embodiment set forth herein.
On the contrary, providing these embodiments, so that the disclosure will be thorough and complete, and design of the invention will be fully conveyed to
Those skilled in the art, the present invention will only be defined by the appended claims.In the accompanying drawings, for clarity, the area Ceng He can be exaggerated
The size and relative size in domain.It should be understood that when element such as layer, region or substrate are referred to as " being formed in " or " setting
" another element "upper" when, which can be arranged directly on another element, or there may also be intermediary elements.
On the contrary, intermediary element is not present when element is referred to as on " being formed directly into " or " being set up directly on " another element.
Embodiment
The present embodiment provides a kind of organic electroluminescence device, be disposed on the substrate first is stacked including substrate and sequentially
Electrode, luminescent layer 3 and second electrode 4；The first electrode includes that the electrically conerolled birefringence film layer being stacked is led with several
The ipsilateral of the electrically conerolled birefringence film layer 2 is not arranged in entirely for electrolemma layer, the conductive film layer.Preferably, as shown in Figure 1,
In the present embodiment, the first electrode includes the first conductive film layer 11 being stacked, the second conductive film layer 12, third conductive film
Layer 13, the electrically conerolled birefringence film layer 2 is folded between second conductive film layer 12 and the third conductive film layer 13.
One or more layers stacking knot of the second electrode lay 4 in MgAg alloy-layer, Ag layers, Al layers
Structure, the present embodiment are Ag layers preferred；The second electrode lay 70 with a thickness of 7~30nm, the present embodiment is preferably 20nm.
In the present embodiment, first conductive film layer 11 is indium tin oxide (ITO) layer, and second conductive film layer 12 is
Silver layer, the third conductive film layer 13 are ITO layer, and thickness is respectively 10nm/100nm/20nm.As convertible reality of the invention
Example is applied, the structure of the first electrode is without being limited thereto, and first conductive film layer 11, the third conductive film layer 13 are selected from but not
It is limited to the conductive oxide or metal of the high work functions such as indium tin oxide (ITO), zinc oxide, gold；Second conductive film layer 12
Selected from but not limited to the high reflections low-resistance material layer such as Ag, Al, as long as meet the conductive film layer described automatically controlled pair is not arranged in entirely
Refractive material film layer 2 it is ipsilateral, and there is catoptric arrangement, the catoptric arrangement is arranged in the electrically conerolled birefringence film layer 2
The purpose of the present invention can be realized in side far from the second electrode 4, belongs to the scope of protection of the present invention.
In order to more effectively adjust microcavity effect, the electrically conerolled birefringence film layer 2 is preferably transparent film layer, this implementation
Example is more preferably PLZT ceramics (PLZT) film layer；The electrically conerolled birefringence film layer 2 with a thickness of 30-70nm,
1/2 wavelength of phase phase difference of e light with o light can be realized under extremely low regulating and controlling voltage, i.e. the phase of e light delays half wavelength,
And then microcavity length can arbitrarily be adjusted by voltage, to realize the adjustment of microcavity effect, and then improve shining for device
Efficiency optimizes visual angle.
Preferably, it is additionally provided in the second electrode optical coupling output layer (CPL), the first electrode shines with described
It is also stacked gradually between layer and is provided with hole injection layer, hole transmission layer, one or more layers the combination in electronic barrier layer；Institute
It states also to stack gradually between luminescent layer and the second electrode and be provided in electron injecting layer, electron transfer layer and hole blocking layer
One or more layers combination.
The structure of organic electroluminescence device described in the present embodiment are as follows: first electrode/HATCN (10nm)/NPB (40nm)/
TCTA(20nm)/CBP(30nm):Ir(ppy)3(10%)/BCP (20nm)/Alq3(50nm)/LiF (0.7nm)/second electrode.
The preparation method of the organic electroluminescence device includes the following steps:
S1, preparation first electrode,
Form the first conductive film layer 11 on the glass substrate by magnetron sputtering technique, first conductive film layer 11 is
The substrate for being formed with ITO layer is carried out in cleaning agent ultrasonic washing, and is carried out using deionized water by transparent conductive layer
It rinses；Then the substrate 10 is placed in acetone/ethanol in the mixed solvent and carries out ultrasonic washing；It is dried under clean environment
It is dry, ultraviolet light and ozone clean are then used, and the surface ITO is bombarded with low energy cation beam.
Silver layer is prepared on first conductive film layer 11 by PVD process, forms the second conductive film layer 12；
Electrically conerolled birefringence film layer 2 is formed by magnetron sputtering technique；
ITO layer, i.e. third conductive film layer are formed in the electrically conerolled birefringence film layer 2 by magnetron sputtering technique
13。
S2, organic layer is prepared
As an embodiment of the present invention, in the present embodiment, the structure of the organic electroluminescence device are as follows: the first electricity
Pole/HATCN (10nm)/NPB (40nm)/TCTA (20nm)/CBP (30nm): Ir (ppy)3(10%)/BCP (20nm)/Alq3
(50nm)/LiF(0.7nm)/Al(150nm)。
Wherein, HATCN prepares 10nm by evaporation process as hole injection layer；NPB is hole transmission layer, passes through steaming
Depositing process preparation, with a thickness of 40nm；TCTA is electronic barrier layer, prepares 20nm by vapor deposition；CBP is luminescent layer material of main part,
Ir(ppy)3For luminescent layer guest materials, 30nm is prepared by total vapor deposition, wherein Ir (ppy)3Mass concentration is 10%；BCP is sky
Cave barrier layer prepares 20nm by vapor deposition；Alq3For electron transfer layer, 50nm is prepared by vapor deposition；LiF is electron injecting layer,
0.7nm is prepared by vapor deposition.
As convertible embodiment of the invention, the structure of the organic electroluminescence device is without being limited thereto.
S3, the second electrode lay 4 is prepared
As an embodiment of the present invention, it in the present embodiment, is prepared by magnetron sputtering technique.
S4, preparation optical coupling output layer
It further include forming optocoupler in the second electrode in the present embodiment as one of embodiment of the invention
The step of closing output layer.The optical coupling output layer is selected from but not limited to: 8-hydroxyquinoline lithium layer, N, N '-diphenyl-N, N '-
Two (9- phenyl -9H- carbazole -3- base) 4- of biphenyl -4 ', bis- amine layer, at least one layer in LiF layers.The present embodiment is preferably 8- hydroxyl
Quinoline lithium layer, is prepared by evaporation process, with a thickness of 3nm.
Comparative example
The present embodiment provides a kind of organic electroluminescence device, specific structure and the preparation method is the same as that of Example 1 is unique different
: do not contain electrically conerolled birefringence film layer 2.
By PR650 spectrophotometer (being purchased from PHOTORESEACH.Inc) to organic in above-described embodiment and comparative example
The optical property of electroluminescent device, test data are as shown in the table:
It, can be to organic electroluminescence device by upper table data it is found that passing through the setting of electrically conerolled birefringence film layer 2
Microcavity length regulated and controled so that microcavity length is controlled to best, be remarkably improved organic electroluminescence device efficiency, and change
Kind visual angle.
Obviously, the above embodiments are merely examples for clarifying the description, and does not limit the embodiments.It is right
For those of ordinary skill in the art, can also make on the basis of the above description it is other it is various forms of variation or
It changes.There is no necessity and possibility to exhaust all the enbodiments.And it is extended from this it is obvious variation or
Variation is still in the protection scope of this invention.
Claims (8)
1. a kind of organic electroluminescence device, including substrate and sequentially stack the first electrode being disposed on the substrate, luminescent layer and
Second electrode；It is characterized in that, the first electrode includes the electrically conerolled birefringence film layer being stacked and several conductive films
Layer, the electrically conerolled birefringence film layer are set between the conductive film layer；At least one layer is anti-in the conductive film layer
Film layer is penetrated, the side of the electrically conerolled birefringence film layer far from the second electrode is arranged in the reflective coating.
2. organic electroluminescence device according to claim 1, which is characterized in that the electrically conerolled birefringence film layer is
Transparent film layer.
3. organic electroluminescence device according to claim 2, which is characterized in that the electrically conerolled birefringence film layer is
PLZT ceramics (PLZT) film layer.
4. organic electroluminescence device according to claim 1-3, which is characterized in that the electrically conerolled birefringence material
Expect film layer with a thickness of 30-70nm.
5. organic electroluminescence device according to claim 1, which is characterized in that the reflectivity of the reflective coating is not small
In 90%, with a thickness of 10-100nm.
6. organic electroluminescence device according to claim 1, which is characterized in that the second electrode is transparent electrode.
7. organic electroluminescence device according to claim 1, which is characterized in that be additionally provided with light in the second electrode
Coupling output layer.
8. organic electroluminescence device according to claim 1, which is characterized in that the first electrode and the luminescent layer
Between also stack gradually and be provided with hole injection layer, hole transmission layer, one or more layers the combination in electronic barrier layer；It is described
It also stacks gradually and is provided in electron injecting layer, electron transfer layer and hole blocking layer between luminescent layer and the second electrode
One or more layers combination.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510975755.8A CN105428550B (en) | 2015-12-22 | 2015-12-22 | A kind of organic electroluminescence device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510975755.8A CN105428550B (en) | 2015-12-22 | 2015-12-22 | A kind of organic electroluminescence device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105428550A CN105428550A (en) | 2016-03-23 |
| CN105428550B true CN105428550B (en) | 2018-12-18 |
Family
ID=55506599
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510975755.8A Active CN105428550B (en) | 2015-12-22 | 2015-12-22 | A kind of organic electroluminescence device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105428550B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106373989B (en) * | 2016-11-24 | 2019-10-22 | 上海天马有机发光显示技术有限公司 | A kind of organic light emitting display panel, electronic equipment and production method |
| KR20180070115A (en) | 2016-12-16 | 2018-06-26 | 엘지디스플레이 주식회사 | Electroluminescent device and Electroluminescent display device including the same |
| CN108776416A (en) * | 2018-06-25 | 2018-11-09 | 常州铱视光电科技有限公司 | A kind of electroluminescent alkali change colour response film |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1116753A (en) * | 1994-07-26 | 1996-02-14 | 三星电管株式会社 | Display device |
| CN1993644A (en) * | 2005-01-20 | 2007-07-04 | 罗姆股份有限公司 | Optical control device having light modulation film |
| CN104557058A (en) * | 2014-12-24 | 2015-04-29 | 中国科学院上海硅酸盐研究所 | Method for preparing high-transparency transparent electrooptic ceramics by performing composite vacuum-oxygen hot pressed sintering |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102916342B (en) * | 2012-10-28 | 2014-12-03 | 北京工业大学 | Vertical-cavity surface-emitting laser device with tunable liquid crystals in inner cavity and manufacturing method thereof |
| CN203225281U (en) * | 2013-04-09 | 2013-10-02 | 桂林电子科技大学 | Inverted top-emitting organic light-emitting device provided with micro-cavity structure and having slightly view-varying spectrums |
| EP2887411A1 (en) * | 2013-12-23 | 2015-06-24 | Nederlandse Organisatie voor toegepast- natuurwetenschappelijk onderzoek TNO | Photoactive birefringent materials in OLEDs |
-
2015
- 2015-12-22 CN CN201510975755.8A patent/CN105428550B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1116753A (en) * | 1994-07-26 | 1996-02-14 | 三星电管株式会社 | Display device |
| CN1993644A (en) * | 2005-01-20 | 2007-07-04 | 罗姆股份有限公司 | Optical control device having light modulation film |
| CN104557058A (en) * | 2014-12-24 | 2015-04-29 | 中国科学院上海硅酸盐研究所 | Method for preparing high-transparency transparent electrooptic ceramics by performing composite vacuum-oxygen hot pressed sintering |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105428550A (en) | 2016-03-23 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6876018B2 (en) | Organic light-emitting diode devices having reduced ambient-light reflection and method of making the same | |
| CN103762317B (en) | A kind of organic electroluminescence device | |
| US10319290B2 (en) | Electroluminescent device, manufacturing method and driving method thereof, and display device | |
| CN103219471A (en) | Top-emitting organic electroluminescent device based on semi-transparent composite negative electrode and preparation method for top-emitting organic electroluminescent device | |
| CN108366470A (en) | Light-emitting device, display equipment and lighting apparatus | |
| US10062862B2 (en) | Organic light-emitting diode (OLED) display panel, electronic device and manufacturing method | |
| CN105428550B (en) | A kind of organic electroluminescence device | |
| WO2018107532A1 (en) | Double-sided oled display device and manufacturing method therefor | |
| KR101973207B1 (en) | Anode including metal oxides and an organic light emitting device having the anode | |
| CN103346269B (en) | A kind of semitransparent electrode and there is the organic electroluminescence device of this semitransparent electrode | |
| WO2015040104A1 (en) | Component and method for producing a component | |
| JP2004079422A (en) | Organic el element | |
| WO2016188042A1 (en) | Electroluminescent component, manufacturing method therefor, display substrate, and display device | |
| CN104518117A (en) | Organic light emitting diode device and preparation method thereof | |
| CN109390489A (en) | Light emitting diode and the preparation method and application thereof | |
| CN104183714A (en) | Organic light emission diode and preparation method thereof, display screen and terminal | |
| TWM564831U (en) | Organic electroluminescent device and electrodes thereof | |
| CN104183711A (en) | Organic light emission diode, display screen and terminal | |
| CN103500801B (en) | The luminous blue light organic emissive diode in top and manufacture method thereof | |
| CN104218156A (en) | Organic light emission diode device and preparation method thereof | |
| CN104183722A (en) | White-light organic light emission diode and preparation method thereof | |
| CN108269936A (en) | A kind of electrode and its preparation method and application | |
| CN104518116A (en) | Organic light emitting diode device and preparation method thereof | |
| WO2015000671A1 (en) | Optoelectronic component device, method for producing an optoelectronic component device, and method for operating an optoelectronic component device | |
| CN104218155A (en) | Organic light emission diode device and fabrication method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of invention: An organic light emitting device Effective date of registration: 20201221 Granted publication date: 20181218 Pledgee: Xin Xin Finance Leasing Co.,Ltd. Pledgor: KunShan Go-Visionox Opto-Electronics Co.,Ltd. Registration number: Y2020980009652 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |