Growth of vertically aligned ZnO nanowalls for inverted polymer solar cells
Growth of vertically aligned ZnO nanowalls for inverted polymer solar cells
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DOI：
10.1016/j.solmat.2013.05.019
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发表时间：
2013-10-01
影响因子：
6.9
通讯作者：
Cao, Guozhong
中科院分区：
文献类型：
--
作者：
Liang, Zhiqiang;Gao, Rui;Cao, Guozhong
本文报道了一种在低温下用水溶液法在ITO玻璃衬底上制备垂直ZnO纳米球的方法。晶体的形成归因于化学浴沉积的致密ZnO棒的（001）面的选择性溶解。ZnO棒阵列的结构决定了刻蚀后的ZnO晶体的形貌，通过调节化学浴溶液的初始pH值和生长温度可以很容易地控制刻蚀后的ZnO晶体的形貌。以垂直排列的ZnO薄膜为电极的倒置型聚合物太阳能电池，其开路电压、短路电流密度、填充因子和功率转换效率的平均性能分别为0.56 V、7.56 mW cm（-2）、0.49和2.14%。结果表明，二维结构的ZnO球可以有效地作为倒置聚合物太阳能电池的电极。(C)2013爱思唯尔有限公司版权所有。
This paper reports a facile fabrication of vertical ZnO nanowalls on ITO coated glass substrates by using an aqueous solution growth method at low temperature. The formation of nanowalls is ascribed to selective dissolution of (001) planes of the chemical bath deposited dense ZnO rods. The morphology of the etched ZnO nanowalls is determined by the structure of the as-grown ZnO rod arrays, which can be readily controlled by tuning aqueous solution parameters such as: initial pH value of chemical bath solution and the growth temperature. With verticaly aligned ZnO nanowalls as electrode in inverted polymer solar cells, the average performance of devices with open circuit voltage, short circuit current density, fill factor, and power conversion efficiency are measured as 0.56 V, 7.56 mW cm(-2), 0.49 and 2.14%, respectively. The results indicate that the two-dimensional structure of ZnO nanowalls can effectively serve as an electrode for inverted polymer solar cells. (C) 2013 Elsevier B.V. All rights reserved.