| Photovoltaic and Electroluminescence Characters in Hybrid ZnO and Conjugated Polymer Bulk Heterojunction Devices |
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| 作者姓名： | 刘俊朋 曲胜春 许颖 陈涌海 曾湘波 王智杰 周慧英 王占国 |
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| 作者单位： | [1]Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083 [2]Beijing Solar Energy Research Institute, Beijing 100083 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant Nos 60476002, 60390071, 60576036 and 60276014, the National Basic Research Programme of China under Grant Nos 2006CB202604 and 2006CB604900, and the Hi-Tech Research and Development Programme of China under Grant No 2006AA03Z0408. |
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| 摘 要： | We report electroluminescence in hybrid ZnO and conjugated polymer poly2-methoxy-5-（3′, 7′-dimethyloctyloxy）- 1,4-phenylenevinylene] （MDMO-PPV） bulk heterojunction photovoltaic cells. Photoluminescence quenching experimental results indicate that the ultrafast photoinduced electron transfer occurs from MDMO-PPV to ZnO under illumination. The ultrafast photoinduced electron transfer effect is induced because ZnO has an electron affinity a bout 1.2 e V greater than that of MDMO-PP V. Electron ＇back transfer＇ can occur if the interfacial barrier between ZnO and MDMO-PPV can be overcome by applying a substantial electric field. Therefore, electrolumi- nescence action due to the fact that the back transfer effect can be observed in the ZnO：MDMO-PPV devices since a forward bias is applied. The photovoltaic and electroluminescence actions in the same ZnO：MDMO-PPV device can be induced by different injection ways： photoinjection and electrical injection. The devices are expected to provide an opportunity for dual functionality devices with photovoltaic effect and electroluminescence character.
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| 关 键 词： | 光电特性 电致发光 ZnO 混合物 聚合物 |
| 收稿时间： | 2007-1-19 |
| 修稿时间： | 2007-01-19 |
Photovoltaic and Electroluminescence Characters in Hybrid ZnO and Conjugated Polymer Bulk Heterojunction Devices |
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| LIU Jun-Peng,QU Sheng-Chun,XU Ying,CHEN Yong-Hai,ZENG Xiang-Bo,WANG Zhi-Jie,ZHOU Hui-Ying,WANG Zhan-Guo.Photovoltaic and Electroluminescence Characters in Hybrid ZnO and Conjugated Polymer Bulk Heterojunction Devices[J].Chinese Physics Letters,2007,24(5):1350-1353. |
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| Authors: | LIU Jun-Peng QU Sheng-Chun XU Ying CHEN Yong-Hai ZENG Xiang-Bo WANG Zhi-Jie ZHOU Hui-Ying WANG Zhan-Guo |
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| Affiliation: | 1 Key Laboratory of Semiconductor Materials Science, Institute of Semiconductors, Chinese Academy of Sciences Beijing 100083; 2Beijing Solar Energy Research Institute |
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| Abstract: | We report electroluminescence in hybrid ZnO and conjugated polymer poly2-methoxy-5-(3',7'-dimethyloctyloxy)-1,4-phenylenevinylene] (MDMO-PPV) bulk heterojunction photovoltaic cells. Photoluminescence quenching experimental results indicate that the ultrafast photoinduced electron transfer occurs from MDMO-PPV to ZnO under illumination. The ultrafast photoinduced electron transfer effect is induced because ZnO has an electron affinity about 1.2eV greater than that of MDMO-PPV. Electron `back transfer' can occur if the interfacial barrier between ZnO and MDMO-PPV can be overcome by applying a substantial electric field. Therefore, electroluminescence action due to the fact that the back transfer effect can be observed in the ZnO:MDMO-PPV devices since a forward bias is applied. The photovoltaic and electroluminescence actions in the same ZnO:MDMO-PPV device can be induced by different injection ways: photoinjection and electrical injection. The devices are expected to provide an opportunity for dual functionality deviceswith photovoltaic effect and electroluminescence character. |
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| Keywords: | 73 50 Pz 78 60 Fi |
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