TiO2 hierarchical nanowire-P25 particulate composite photoanodes in combination with N-doped mesoporous carbon/Ti counter electrodes for high performance quantum dot-sensitized solar cells
TiO2 hierarchical nanowire-P25 particulate composite photoanodes in combination with N-doped mesoporous carbon/Ti counter electrodes for high performance quantum dot-sensitized solar cells
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TiO2分层纳米线-P25颗粒复合光阳极与N掺杂介孔碳/Ti对电极组合用于高性能量子点敏化太阳能电池
DOI：
10.1016/j.solener.2019.09.014
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发表时间：
2019-10
期刊：
影响因子：
6.7
通讯作者：
Zhong Xinhua
中科院分区：
文献类型：
--
作者：
Song Han;Pan Zhenxiao;Rao Huashang;Zhong Xinhua
The time-consuming transport of photo-generated electrons across conventional photoanode film, composed of disordered P25 TiO2nanoparticulates, is one of the main bottlenecks to improve the performance of quantum dot-sensitized solar cells (QDSCs). A convenient and effective method was developed for the preparation of high performance photoanodes based on composite paste composed of conventional P25 TiO2nanoparticulates and TiO2hierarchical nanowires (HNW) for QDSCs. The shortened transport path in the composite photoanode brings forward suppressed charge recombination processes at the interfaces between photoanode and electrolyte, and improved photovoltaic performance of the resulting solar cells. Through optimizing the composite photoanode and the adoption of N-doped mesoporous carbon/Ti counter electrodes, average power conversion efficiency of Zn-Cu-In-Se (ZCISe) QDSCs was increased from 12.77% corresponding to conventional P25 photoanodes to 13.43% (Jsc= 27.38 mA cm−2,Voc= 0.764 V, and FF = 0.642) corresponding to photoanodes with HNW/P25 weight ratio of 0.1%. Furthermore, this composite photoanode is also effective in improving the photovoltaic performance of QDSCs under different QD sensitizers (such as Zn-Cu-In-S (ZCIS) QDs) as well as different counter electrodes (such as Cu2S/brass).
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