Conformational disorder of organic cations tunes the charge carrier mobility in two-dimensional organic-inorganic perovskites.
Conformational disorder of organic cations tunes the charge carrier mobility in two-dimensional organic-inorganic perovskites.
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有机阳离子的构象无序调节二维有机-无机钙钛矿中的载流子迁移率
DOI：
10.1038/s41467-020-19330-7
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发表时间：
2020-10-30
影响因子：
16.6
通讯作者：
Ye S
中科院分区：
文献类型：
--
作者：
Li C;Yang J;Su F;Tan J;Luo Y;Ye S
The chemical nature of the organic cations governs the optoelectronic properties of two-dimensional organic-inorganic perovskites. But its mechanism is not fully understood. Here, we apply femtosecond broadband sum frequency generation vibrational spectroscopy to investigate the molecular conformation of spacer organic cations in two-dimensional organic-inorganic perovskite films and establish a correlation among the conformation of the organic cations, the charge carrier mobility, and broadband emission. Our study indicates that both the mobility and broadband emission show strong dependence on the molecular conformational order of organic cations. The gauche defect and local chain distortion of organic cations are the structural origin of the in-plane mobility reduction and broad emission in two-dimensional organic-inorganic perovskites. Both of the interlayer distance and the conformational order of the organic cations affect the out-of-plane mobility. This work provides molecular-level understanding of the conformation of organic cations in optimizing the optoelectronic properties of two-dimensional organic-inorganic perovskites.
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影响因子：
3.7
作者：
ISHIHARA, T;TAKAHASHI, J;GOTO, T
通讯作者：
GOTO, T
影响因子：
41.2
作者：
Gong, Xiwen;Voznyy, Oleksandr;Sargent, Edward H.
通讯作者：
Sargent, Edward H.
DOI：
10.1107/s0108768107031758
发表时间：
2007-10-01
影响因子：
1.9
作者：
Billing, David G.;Lemmerer, Andreas
通讯作者：
Lemmerer, Andreas
影响因子：
3.3
作者：
Billing, David G.;Lemmerer, Andreas
通讯作者：
Lemmerer, Andreas
影响因子：
21.8
作者：
Gao, Yao;Shi, Enzheng;Dou, Letian
通讯作者：
Dou, Letian