Inverted polymer solar cells with a solution-processed zinc oxide thin film as an electron collection layer  

作　　者：YANG TingBin QIN DongHuan LAN LinFeng HUANG WenBo GONG Xiong PENG JunBiao CAO Yong 

机构地区：[1]Department of Polymer Engineering, College of Polymer Science and Engineering, The University of Akron, Akron, OH 44325, USA [2]State Key Laboratory afLuminescence Physics and Chemistry South China University of Technology Guangzhou 510640, China

出　　处：《Science China Chemistry》2012年第5期755-759,共5页中国科学（化学英文版）

基　　金：the Joint Researh Fund for Overseas Chinese Scholars, and the National Natural Science Foundation of China (50828301);the NSFC (50990065, U0634003, and 60937001);MOST (2009CB603601);973 project (2009CB623604)

摘　　要：A solution-processed zinc oxide (ZnO) thin film as an electron collection layer for polymer solar cells (PSCs) with an inverted device structure was investigated. Power conversion efficiencies (PCEs) of PSCs made with a blend of poly(3-hexylthiophene) (P3HT) and [6,6]-phenyl C61-butyric acid methyl ester (PCBM) are 3.50% and 1.21% for PSCs with and without the ZnO thin film, respectively. Light intensity dependence of the photocurrent and the capacitance-voltage measurement demonstrate that the increased PCEs are due to the restriction of the strong bimolecular recombination in the interface when a thin ZnO layer is inserted between the polymer active layer and the ITO electrode. These results demonstrate that the ZnO thin film plays an important role in the performance of PSCs with an inverted device structure.A solution-processed zinc oxide （ZnO） thin film as an electron collection layer for polymer solar cells （PSCs） with an inverted device structure was investigated. Power conversion efficiencies （PCEs） of PSCs made with a blend of poly（3-hexylthiophene） （P3HT） and [6,6]-phenyl C61-butyric acid methyl ester （PCBM） are 3.50% and 1.21% for PSCs with and without the ZnO thin film, respectively. Light intensity dependence of the photocurrent and the capacitance-voltage measurement demonstrate that the increased PCEs are due to the restriction of the strong bimolecular recombination in the interface when a thin ZnO layer is inserted between the polymer active layer and the ITO electrode. These results demonstrate that the ZnO thin film plays an important role in the performance of PSCs with an inverted device structure.

关 键 词：polymer solar cells inverted device structure ZnO thin films 

分 类 号：TN304.21[电子电信—物理电子学] TM914.4[电气工程—电力电子与电力传动]