Shape-controlled synthesis of organolead halide perovskite nanocrystals and their tunable optical absorption

被引：36

作者：

Chen, Zhenhua ^{[1
,2
,3
]}

Li, Hui ^{[2
]}

Tang, Yongbing ^{[1
,2
,4
]}

Huang, Xing ^{[1
,2
]}

Ho, Derek ^{[2
]}

Lee, Chun-Sing ^{[1
,2
,4
]}

机构：

[1] City Univ Hong Kong, COSDAF, 83 Tat Chee Ave, Hong Kong, Hong Kong, Peoples R China

[2] City Univ Hong Kong, Dept Phys & Mat Sci, Hong Kong, Hong Kong, Peoples R China

[3] Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201800, Peoples R China

[4] City Univ Hong Kong, Shenzhen Res Inst, Shenzhen, Peoples R China

来源：

MATERIALS RESEARCH EXPRESS | 2014年 / 1卷 / 01期

基金：

中国国家自然科学基金;

关键词：

organolead halide perovskites; trigonal phase; solar cell; HYBRID SOLAR-CELLS;

D O I：

10.1088/2053-1591/1/1/015034

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Hybrid organolead halide perovskites (CH3NH3PbI3) with polymorphic structures have been successfully synthesized by controlling their solubility in solvents with different polarities. Crystal formation stages of the perovskites have been demonstrated for the first time. Shape changes of such perovskites are accompanied by transition in their crystal structures and variation of optical properties. Herein, a new trigonal phase for CH3NH3PbI3 has been observed with a rod-like morphology. Photoemission study indicates a significant red shift in the perovskite nanoparticles, compared to that of the rod-like nanocrystals. This solvent-controlled formation of polymorphic phases provide an additional approach for controlling the optical properties of CH3NH3PbI3 for various optoelectronic applications.

引用

页数：10

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