Efficient Organic Light Emitting Diodes Using Solution-Processed Alkali Metal Carbonate Doped ZnO as Electron Injection Layer
In this study, we demonstrate highly efficient, inverted organic light-emitting diodes (IOLEDs) using solution-processed alkali metal carbonate doped ZnO as an electron injection layer (EIL) and tris-(8-hydroxyquinoline) aluminum (Alq3) as an emitter layer. In order to enhance the electron injection...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2019-04-01
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| Series: | Frontiers in Chemistry |
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| Online Access: | https://www.frontiersin.org/article/10.3389/fchem.2019.00226/full |
| _version_ | 1811279220474642432 |
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| author | Guo Chen Feiyang Liu Zhitian Ling Pengpeng Zhang Bin Wei Wenqing Zhu |
| author_facet | Guo Chen Feiyang Liu Zhitian Ling Pengpeng Zhang Bin Wei Wenqing Zhu |
| author_sort | Guo Chen |
| collection | DOAJ |
| description | In this study, we demonstrate highly efficient, inverted organic light-emitting diodes (IOLEDs) using solution-processed alkali metal carbonate doped ZnO as an electron injection layer (EIL) and tris-(8-hydroxyquinoline) aluminum (Alq3) as an emitter layer. In order to enhance the electron injection efficiency of the IOLEDs, the ZnO EIL layers were modified by doping various alkali metal carbonate materials, including Li2CO3, Na2CO3, K2CO3, and Cs2CO3, using the low-temperature wet-chemical method. Compared to the control neat ZnO EIL-based IOLEDs, the alkali metal carbonate doped ZnO EIL-based IOLEDs possess obviously improved device performance. An optimal current efficiency of 6.04 cd A−1 were realized from the K2CO3 doped ZnO EIL based IOLED, which is 54% improved compared to that of the neat ZnO EIL based device. The enhancement is ascribed to the increased electron mobility and reduced barrier height for more efficient electron injection. Our results indicate that alkali metal carbonate doped ZnO has promising potential for application in highly efficient solution-processed OLEDs. |
| first_indexed | 2024-04-13T00:50:49Z |
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| id | doaj.art-2f4f5fed7c6d4c66b1764fb99d2907bb |
| institution | Directory Open Access Journal |
| issn | 2296-2646 |
| language | English |
| last_indexed | 2024-04-13T00:50:49Z |
| publishDate | 2019-04-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Chemistry |
| spelling | doaj.art-2f4f5fed7c6d4c66b1764fb99d2907bb2022-12-22T03:09:52ZengFrontiers Media S.A.Frontiers in Chemistry2296-26462019-04-01710.3389/fchem.2019.00226451779Efficient Organic Light Emitting Diodes Using Solution-Processed Alkali Metal Carbonate Doped ZnO as Electron Injection LayerGuo ChenFeiyang LiuZhitian LingPengpeng ZhangBin WeiWenqing ZhuIn this study, we demonstrate highly efficient, inverted organic light-emitting diodes (IOLEDs) using solution-processed alkali metal carbonate doped ZnO as an electron injection layer (EIL) and tris-(8-hydroxyquinoline) aluminum (Alq3) as an emitter layer. In order to enhance the electron injection efficiency of the IOLEDs, the ZnO EIL layers were modified by doping various alkali metal carbonate materials, including Li2CO3, Na2CO3, K2CO3, and Cs2CO3, using the low-temperature wet-chemical method. Compared to the control neat ZnO EIL-based IOLEDs, the alkali metal carbonate doped ZnO EIL-based IOLEDs possess obviously improved device performance. An optimal current efficiency of 6.04 cd A−1 were realized from the K2CO3 doped ZnO EIL based IOLED, which is 54% improved compared to that of the neat ZnO EIL based device. The enhancement is ascribed to the increased electron mobility and reduced barrier height for more efficient electron injection. Our results indicate that alkali metal carbonate doped ZnO has promising potential for application in highly efficient solution-processed OLEDs.https://www.frontiersin.org/article/10.3389/fchem.2019.00226/fullorganic light emitting diodes (OLED)solution processelectron injection layerdoped ZnOalkali metal carbonate |
| spellingShingle | Guo Chen Feiyang Liu Zhitian Ling Pengpeng Zhang Bin Wei Wenqing Zhu Efficient Organic Light Emitting Diodes Using Solution-Processed Alkali Metal Carbonate Doped ZnO as Electron Injection Layer Frontiers in Chemistry organic light emitting diodes (OLED) solution process electron injection layer doped ZnO alkali metal carbonate |
| title | Efficient Organic Light Emitting Diodes Using Solution-Processed Alkali Metal Carbonate Doped ZnO as Electron Injection Layer |
| title_full | Efficient Organic Light Emitting Diodes Using Solution-Processed Alkali Metal Carbonate Doped ZnO as Electron Injection Layer |
| title_fullStr | Efficient Organic Light Emitting Diodes Using Solution-Processed Alkali Metal Carbonate Doped ZnO as Electron Injection Layer |
| title_full_unstemmed | Efficient Organic Light Emitting Diodes Using Solution-Processed Alkali Metal Carbonate Doped ZnO as Electron Injection Layer |
| title_short | Efficient Organic Light Emitting Diodes Using Solution-Processed Alkali Metal Carbonate Doped ZnO as Electron Injection Layer |
| title_sort | efficient organic light emitting diodes using solution processed alkali metal carbonate doped zno as electron injection layer |
| topic | organic light emitting diodes (OLED) solution process electron injection layer doped ZnO alkali metal carbonate |
| url | https://www.frontiersin.org/article/10.3389/fchem.2019.00226/full |
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