Influence of crystal phase for CuInS₂ on device performance of polymer-CuInS₂/oxide nanoarrays solar cells

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• 作者：Wenjin Yue ; ^{yuewenjin_79@163.com" class="auth_mail} ; Guoqiang Zhang ; Songming Wang ; Wenshan Sun ; Mingyang Lan ; Guangjun Nie ; ^{join-us@163.com" class="auth_mail}
• 关键词：CuInS2 ; Metal oxide ; Solar cells ; Crystal phase ; Polymer
• 刊名：Materials Science in Semiconductor Processing
• 出版年：September 2014
• 年：2014
• 卷：25
• 期：Complete
• 页码：337-343
• 全文大小：1306 K

文摘

The paper demonstrates the influence of crystal phase for CuInS₂ on device performance of MEH-PPV-CuInS₂/oxide nanoarrays hybrid polymer-based solar cells. CuInS₂ quantum dots with wurtzite and chalcopyrite crystallographic phases are incorporated into pristine polymer layer as light-harvesting hybrids, while ZnO nanoarrays (ZnO-NA) and TiO₂ nanoarrays (TiO₂-NA) are used as electron acceptor. Results show that devices with wurtzite CuInS₂ quantum dots (WCIS-QDs) exhibited higher photovoltaic performance in MEH-PPV-CuInS₂/ZnO-NA solar cells, while devices with chalcopyrite CuInS₂ quantum dots (CCIS-QDs) exhibited higher performance in MEH-PPV-CuInS₂/TiO₂-NA solar cells. It is concluded that the devices based on metal oxide and CuInS₂ that belong to the same crystal system contribute to the increased device performance, which possibly results from the more effective energy transfer and transport between metal oxide and CuInS₂ with the same crystal system.