Pressure effects on the inductive loop, mixed conduction, and photoresponsivity in formamidinium lead bromide perovskite
Pressure effects on the inductive loop, mixed conduction, and photoresponsivity in formamidinium lead bromide perovskite
复制标题
压力对甲脒溴化铅钙钛矿感应回路、混合传导和光响应性的影响
DOI：
10.1063/1.5063394
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发表时间：
2018-12
影响因子：
4
通讯作者：
Gao Chunxiao
中科院分区：
文献类型：
--
作者：
Ou Tianji;Ma Xinjun;Yan Huacai;Shen Wenshu;Liu Hao;Han Yonghao;Liu Xizhe;Liu Cailong;Ma Yanzhang;Gao Chunxiao
Further efficiency boost of organic-inorganic perovskite solar cells is hampered by limited knowledge on ion migration, inductive loops, and the relationship between structures and properties in organometal halide perovskites. In this work, in situ alternating current impedance spectroscopy measurements on CH(NH2)2PbBr3 (FAPbBr3) have been carried out under high pressure up to 4.8 GPa. The inductive loop has been discovered at low frequencies and can be tuned dramatically by applying pressure, which is attributed to large FA ion migration in FAPbBr3. Two discontinuous changes are observed in both ionic and electronic resistances around phase transition pressure. The pressure dependent photoresponse of FAPbBr3 has also been studied by in situ photocurrent measurements under high pressure up to 3.8 GPa. It indicates that the photocurrent of FAPbBr3 can be enhanced remarkably at 1.3 GPa and the largest photocurrent value in FAPbBr3 is nearly 10 times larger than that in CH3NH3PbBr3 and about 3 times larger than that in CH3NH3PbI3.Further efficiency boost of organic-inorganic perovskite solar cells is hampered by limited knowledge on ion migration, inductive loops, and the relationship between structures and properties in organometal halide perovskites. In this work, in situ alternating current impedance spectroscopy measurements on CH(NH2)2PbBr3 (FAPbBr3) have been carried out under high pressure up to 4.8 GPa. The inductive loop has been discovered at low frequencies and can be tuned dramatically by applying pressure, which is attributed to large FA ion migration in FAPbBr3. Two discontinuous changes are observed in both ionic and electronic resistances around phase transition pressure. The pressure dependent photoresponse of FAPbBr3 has also been studied by in situ photocurrent measurements under high pressure up to 3.8 GPa. It indicates that the photocurrent of FAPbBr3 can be enhanced remarkably at 1.3 GPa and the largest photocurrent value in FAPbBr3 is nearly 10 times larger than that in CH3NH3PbBr3 and about 3 times larger t...
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影响因子：
56.9
作者：
Lee, Michael M.;Teuscher, Joel;Snaith, Henry J.
通讯作者：
Snaith, Henry J.
影响因子：
8.4
作者：
Lü X;Yang W;Jia Q;Xu H
通讯作者：
Xu H
影响因子：
5.7
作者：
Juarez-Perez, Emilio J.;Wussler, Michael;Mora-Sero, Ivan
通讯作者：
Mora-Sero, Ivan
DOI：
10.1021/acs.jpclett.7b01022
发表时间：
2017-06
期刊：
The journal of physical chemistry letters
影响因子：
--
作者：
Huacai Yan;Tianji Ou;Hui Jiao;Tianyi Wang;Qinglin Wang;Cailong Liu;Xizhe Liu;Yonghao Han;
通讯作者：
Huacai Yan;Tianji Ou;Hui Jiao;Tianyi Wang;Qinglin Wang;Cailong Liu;Xizhe Liu;Yonghao Han;
DOI：
10.1021/acs.jpclett.6b02420
发表时间：
2016-12
期刊：
The journal of physical chemistry letters
影响因子：
--
作者：
Lingrui Wang;Kai Wang;Guanjun Xiao;Q. Zeng;Bo Zou
通讯作者：
Lingrui Wang;Kai Wang;Guanjun Xiao;Q. Zeng;Bo Zou