Improvement of photovoltaic performance of perovskite solar cells by interface modification with CaTiO3
Improvement of photovoltaic performance of perovskite solar cells by interface modification with CaTiO3
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CaTiO3界面修饰改善钙钛矿太阳能电池的光伏性能
DOI:
10.1016/j.jpowsour.2019.227504
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发表时间:
2020-02
影响因子:
9.2
通讯作者:
Tian Xu
中科院分区:
文献类型:
--
作者:
Shuiping Li;Xin Li;Junyou Yang;Qinghui Jiang;Hui Lai;Yao Tan;Bo Xiao;Tian Xu
The ETL/perovskite interface is crucial for the photovoltaic performance of perovskite solar cells (PSCs) because of its key role in electrons transport and charge recombination. Herein, an ultrathin CaTiO3layer has facilely been fabricated and incorporated between the mp-TiO2and perovskite layers. Due to the trap passivation effect and the optimized energy level alignment induced by modification, the electron transport is facilitated while the charge recombination is suppressed effectively. Therefore, the champion device gains a maximum PCE of 19.12% with the enhanced photovoltaic performance. In addition, the stability of PSCs has also been ameliorated by modification, and about 85% of the initial efficiency can be maintained even after exposure in ambient for 1000h.
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DOI:
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