CN104576963A - Organic LED of multilayer structure - Google Patents
Organic LED of multilayer structure Download PDFInfo
- Publication number
- CN104576963A CN104576963A CN201410783011.1A CN201410783011A CN104576963A CN 104576963 A CN104576963 A CN 104576963A CN 201410783011 A CN201410783011 A CN 201410783011A CN 104576963 A CN104576963 A CN 104576963A
- Authority
- CN
- China
- Prior art keywords
- layer
- hole injection
- light emitting
- sandwich construction
- emitting diode
- 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.)
- Pending
Links
- 238000002347 injection Methods 0.000 claims abstract description 34
- 239000007924 injection Substances 0.000 claims abstract description 34
- 239000011521 glass Substances 0.000 claims abstract description 17
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 8
- PQXKHYXIUOZZFA-UHFFFAOYSA-M lithium fluoride Chemical compound [Li+].[F-] PQXKHYXIUOZZFA-UHFFFAOYSA-M 0.000 claims abstract description 8
- 239000000758 substrate Substances 0.000 claims abstract description 8
- 230000027756 respiratory electron transport chain Effects 0.000 claims abstract description 7
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 claims abstract description 6
- 229910001515 alkali metal fluoride Inorganic materials 0.000 claims abstract description 4
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 4
- 239000000377 silicon dioxide Substances 0.000 claims abstract description 4
- 239000011248 coating agent Substances 0.000 claims description 17
- 238000000576 coating method Methods 0.000 claims description 17
- 238000010276 construction Methods 0.000 claims description 16
- 230000005540 biological transmission Effects 0.000 claims description 4
- 239000003513 alkali Substances 0.000 claims description 3
- 150000001875 compounds Chemical class 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- 229910019015 Mg-Ag Inorganic materials 0.000 abstract 1
- 150000001339 alkali metal compounds Chemical group 0.000 abstract 1
- 229910045601 alloy Inorganic materials 0.000 abstract 1
- 239000000956 alloy Substances 0.000 abstract 1
- 239000000126 substance Substances 0.000 abstract 1
- 238000000034 method Methods 0.000 description 3
- 239000011368 organic material Substances 0.000 description 2
- NROKBHXJSPEDAR-UHFFFAOYSA-M potassium fluoride Chemical compound [F-].[K+] NROKBHXJSPEDAR-UHFFFAOYSA-M 0.000 description 2
- PUZPDOWCWNUUKD-UHFFFAOYSA-M sodium fluoride Chemical compound [F-].[Na+] PUZPDOWCWNUUKD-UHFFFAOYSA-M 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- FJDQFPXHSGXQBY-UHFFFAOYSA-L caesium carbonate Chemical compound [Cs+].[Cs+].[O-]C([O-])=O FJDQFPXHSGXQBY-UHFFFAOYSA-L 0.000 description 1
- 229910000024 caesium carbonate Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 229910003437 indium oxide Inorganic materials 0.000 description 1
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 1
- 229910001947 lithium oxide Inorganic materials 0.000 description 1
- 235000003270 potassium fluoride Nutrition 0.000 description 1
- 239000011698 potassium fluoride Substances 0.000 description 1
- 235000013024 sodium fluoride Nutrition 0.000 description 1
- 239000011775 sodium fluoride Substances 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
Classifications
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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
- H10K50/80—Constructional details
-
- 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]
- H10K50/17—Carrier injection layers
-
- 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
- H10K50/81—Anodes
-
- 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
- H10K50/82—Cathodes
-
- 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
- H10K85/10—Organic polymers or oligomers
- H10K85/111—Organic polymers or oligomers comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene
- H10K85/113—Heteroaromatic compounds comprising sulfur or selene, e.g. polythiophene
- H10K85/1135—Polyethylene dioxythiophene [PEDOT]; Derivatives thereof
Landscapes
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The invention discloses an organic LED of a multilayer structure. The organic LED comprises a cathode layer, an electron injection layer, an electron transfer layer, a luminous layer, a hole transfer layer, a hole injection layer, an anode layer and a glass substrate which are stacked up in sequence from top to bottom, and is characterized in that the cathode layer is an Mg-Ag alloy layer; the anode layer is a conducting glass layer; a buffer layer is also arranged between the hole injection layer and the conducting glass layer, and the buffer layer is an insulating substance layer and is 0.6-1.8 nm in thickness; the hole injection layer is a PEDOT layer. Preferably, the buffer layer can be a silicon dioxide layer or a lithium fluoride layer. Preferably, the electron injection layer is an alkali metal compound layer or an alkali metal fluoride layer. The conventional multilayer structure is improved, so that the charge injection efficiency of the hole injection layer is improved, and the driving voltage is reduced.
Description
Technical field
The present invention relates to a kind of Organic Light Emitting Diode of sandwich construction.
Background technology
Organic Light Emitting Diode is also called Organic Electricity laser display, has self luminous characteristic, adopts very thin coating of organic material and glass substrate, when there being electric current to pass through, these organic materials will be luminous, and OLED display screen curtain visible angle is large, and can save electric energy.Common are three-decker and sandwich construction, wherein, sandwich construction is on the basis of three-decker, adds electron injecting layer and hole injection layer, but the charge injection efficiency comparison of hole injection layer is low, and driving voltage is higher.
Summary of the invention
For the problems referred to above, the invention provides a kind of Organic Light Emitting Diode of sandwich construction, existing sandwich construction is improved, improve the charge injection efficiency of hole injection layer, reduce driving voltage.
For realizing above-mentioned technical purpose, reach above-mentioned technique effect, the present invention is achieved through the following technical solutions:
A kind of Organic Light Emitting Diode of sandwich construction, comprise the cathode layer, electron injecting layer, electron transfer layer, luminescent layer, hole transmission layer, hole injection layer, anode layer and the glass substrate that stack in turn from top to bottom, it is characterized in that, described cathode layer is MgAg alloy-layer, described anode layer is conductive glass layer, also be provided with resilient coating between described hole injection layer and conductive glass layer, described resilient coating is insulating material layer and thickness is 0.6-1.8nm, and described hole injection layer is PEDOT layer.
Preferably, described resilient coating can be silicon dioxide layer, or layer of lithium fluoride.
Preferably, electron injecting layer is alkali compound layer or alkali metal fluoride layer.
Hole injection layer adds the charge injection between interface, can improve efficiency and the life-span of device, adopts PEDOT Rotating fields can surface flattening by resilient coating, reduces the probability of shorted devices, reduces the starting voltage of device; Resilient coating improves charge injection efficiency, the reduction driving voltage of hole injection layer; Electron injecting layer help electronics or hole more effective from electrode injection electron transfer layer.
The invention has the beneficial effects as follows: existing sandwich construction is improved, improve the charge injection efficiency of hole injection layer, reduce driving voltage.
Accompanying drawing explanation
Fig. 1 is the structural representation of the Organic Light Emitting Diode of a kind of sandwich construction of the present invention;
The mark implication of accompanying drawing is as follows:
1:MgAg alloy-layer; 2: electron injecting layer; 3: electron transfer layer; 4: luminescent layer; 5: hole transmission layer; 6: hole injection layer; 7: resilient coating; 8: conductive glass layer; 9: glass substrate.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment, technical solution of the present invention is described in further detail, can better understand the present invention to make those skilled in the art and can be implemented, but illustrated embodiment is not as a limitation of the invention.
An Organic Light Emitting Diode for sandwich construction, as shown in Figure 1, comprises the cathode layer, electron injecting layer 2, electron transfer layer 3, luminescent layer 4, hole transmission layer 5, hole injection layer 6, anode layer and the glass substrate 9 that stack in turn from top to bottom.Wherein, described cathode layer is MgAg alloy-layer 1, described anode layer is that conductive glass layer 8(utilizes the multiple methods such as sputtering, evaporation to plate indium oxide layer tin, be commonly called as ITO), resilient coating 7 is also provided with between described hole injection layer 6 and conductive glass layer 8, described resilient coating 7 is insulating material layer and thickness is 0.6-1.8nm, and described hole injection layer 6 is PEDOT layers.Preferably, the thickness of top bottom glass substrate 9 of described cathode layer is 1-2mm, and namely the altitude range of device is 1-2mm.
Wherein, described resilient coating 7 can be silicon dioxide layer, also can be layer of lithium fluoride.The thickness of resilient coating 7 is unsuitable excessive, otherwise driving voltage can be caused to rise on the contrary.
Wherein, described electron injecting layer 2 can be alkali compound layer, and thickness is 0.5-0.8mm, such as, and lithia, cesium carbonate etc.; Also can be alkali metal fluoride layer, and thickness be 0.3-0.8mm, such as sodium fluoride, potassium fluoride etc.
Hole injection layer 6 adds the charge injection between interface, can improve efficiency and the life-span of device, adopts PEDOT Rotating fields can surface flattening by resilient coating 7, reduces the probability of shorted devices, reduces the starting voltage of device; Resilient coating 7 improves charge injection efficiency, the reduction driving voltage of hole injection layer 6; Electron injecting layer 2 help electronics or hole more effective from electrode injection electron transfer layer 3.
These are only the preferred embodiments of the present invention; not thereby the scope of the claims of the present invention is limited; every utilize specification of the present invention and accompanying drawing content to do equivalent structure or equivalent flow process conversion; or be directly or indirectly used in the technical field that other are relevant, be all in like manner included in scope of patent protection of the present invention.
Claims (6)
1. the Organic Light Emitting Diode of a sandwich construction, comprise the cathode layer stacked in turn from top to bottom, electron injecting layer (2), electron transfer layer (3), luminescent layer (4), hole transmission layer (5), hole injection layer (6), anode layer and glass substrate (9), it is characterized in that, described cathode layer is MgAg alloy-layer (1), described anode layer is conductive glass layer (8), resilient coating (7) is also provided with between described hole injection layer (6) and conductive glass layer (8), described resilient coating (7) is insulating material layer and thickness is 0.6-1.8nm, described hole injection layer (6) is PEDOT layer.
2. the Organic Light Emitting Diode of a kind of sandwich construction according to claim 1, is characterized in that, described resilient coating (7) is silicon dioxide layer.
3. the Organic Light Emitting Diode of a kind of sandwich construction according to claim 1, is characterized in that, described resilient coating (7) is layer of lithium fluoride.
4. the Organic Light Emitting Diode of a kind of sandwich construction according to Claims 2 or 3, is characterized in that, described electron injecting layer (2) is alkali compound layer, and thickness is 0.5-0.8mm.
5. the Organic Light Emitting Diode of a kind of sandwich construction according to Claims 2 or 3, is characterized in that, described electron injecting layer (2) is alkali metal fluoride layer, and thickness is 0.3-0.8mm.
6. the Organic Light Emitting Diode of a kind of sandwich construction according to claim 1, is characterized in that, the thickness of top bottom glass substrate (9) of described cathode layer is 1-2mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410783011.1A CN104576963A (en) | 2014-12-18 | 2014-12-18 | Organic LED of multilayer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410783011.1A CN104576963A (en) | 2014-12-18 | 2014-12-18 | Organic LED of multilayer structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104576963A true CN104576963A (en) | 2015-04-29 |
Family
ID=53092557
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410783011.1A Pending CN104576963A (en) | 2014-12-18 | 2014-12-18 | Organic LED of multilayer structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104576963A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170125717A1 (en) * | 2015-10-28 | 2017-05-04 | Samsung Display Co., Ltd. | Organic light-emitting device |
Citations (8)
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|---|---|---|---|---|
| CN1783532A (en) * | 2004-10-11 | 2006-06-07 | 三星Sdi株式会社 | Organic el device and method of manufacturing the same |
| US20060261731A1 (en) * | 2005-05-20 | 2006-11-23 | Xerox Corporation | Stacked oled structure |
| CN101106849A (en) * | 2007-08-13 | 2008-01-16 | 京东方科技集团股份有限公司 | EL display part and its making method |
| CN101114701A (en) * | 2007-08-16 | 2008-01-30 | 清华大学 | An organic electroluminescent device |
| CN101132055A (en) * | 2007-09-28 | 2008-02-27 | 天津理工大学 | A device capable of improving the brightness and efficiency of an organic electroluminescence device and its preparation method |
| CN102738194A (en) * | 2011-04-01 | 2012-10-17 | 乐金显示有限公司 | Organic electroluminescent display device |
| US20120326189A1 (en) * | 2011-06-22 | 2012-12-27 | Samsung Mobile Display Co., Ltd. | Electrode Including Magnetic Material and Organic Light Emitting Device Including the Electrode |
| CN204333041U (en) * | 2014-12-18 | 2015-05-13 | 苏州汉克山姆照明科技有限公司 | A kind of Organic Light Emitting Diode of sandwich construction |
-
2014
- 2014-12-18 CN CN201410783011.1A patent/CN104576963A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1783532A (en) * | 2004-10-11 | 2006-06-07 | 三星Sdi株式会社 | Organic el device and method of manufacturing the same |
| US20060261731A1 (en) * | 2005-05-20 | 2006-11-23 | Xerox Corporation | Stacked oled structure |
| CN101106849A (en) * | 2007-08-13 | 2008-01-16 | 京东方科技集团股份有限公司 | EL display part and its making method |
| CN101114701A (en) * | 2007-08-16 | 2008-01-30 | 清华大学 | An organic electroluminescent device |
| CN101132055A (en) * | 2007-09-28 | 2008-02-27 | 天津理工大学 | A device capable of improving the brightness and efficiency of an organic electroluminescence device and its preparation method |
| CN102738194A (en) * | 2011-04-01 | 2012-10-17 | 乐金显示有限公司 | Organic electroluminescent display device |
| US20120326189A1 (en) * | 2011-06-22 | 2012-12-27 | Samsung Mobile Display Co., Ltd. | Electrode Including Magnetic Material and Organic Light Emitting Device Including the Electrode |
| CN204333041U (en) * | 2014-12-18 | 2015-05-13 | 苏州汉克山姆照明科技有限公司 | A kind of Organic Light Emitting Diode of sandwich construction |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170125717A1 (en) * | 2015-10-28 | 2017-05-04 | Samsung Display Co., Ltd. | Organic light-emitting device |
| US9997733B2 (en) * | 2015-10-28 | 2018-06-12 | Samsung Display Co., Ltd. | Organic light-emitting device |
| US10305059B2 (en) * | 2015-10-28 | 2019-05-28 | Samsung Display Co., Ltd. | Organic light-emitting device |
| US10665810B2 (en) * | 2015-10-28 | 2020-05-26 | Samsung Display Co., Ltd. | Organic light-emitting device |
| US11264583B2 (en) * | 2015-10-28 | 2022-03-01 | Samsung Display Co., Ltd. | Organic light-emitting device |
| US20220158114A1 (en) * | 2015-10-28 | 2022-05-19 | Samsung Display Co., Ltd. | Organic light-emitting device |
| US11737299B2 (en) * | 2015-10-28 | 2023-08-22 | Samsung Display Co., Ltd. | Organic light-emitting device |
| US20230345754A1 (en) * | 2015-10-28 | 2023-10-26 | Samsung Display Co., Ltd. | Organic light-emitting device |
| US12133402B2 (en) * | 2015-10-28 | 2024-10-29 | Samsung Display Co., Ltd. | Organic light-emitting device |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150429 |
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| RJ01 | Rejection of invention patent application after publication |