Optical properties of CH3NH3PbX3 (X = halogen) and their mixed-halide crystals

被引：288

作者：

Kitazawa, N ^{[1
]}

Watanabe, Y ^{[1
]}

Nakamura, Y ^{[1
]}

机构：

[1] Natl Def Acad, Dept Mat Sci & Engn, Kanagawa 2398686, Japan

来源：

JOURNAL OF MATERIALS SCIENCE | 2002年 / 37卷 / 17期

关键词：

D O I：

10.1023/A:1016584519829

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thin films of microcrystalline CH3NH3PbX3 (X = halogen) as well as their mixed-halide crystals were fabricated by the spin-coating technique, and their optical properties were investigated. X-ray diffraction investigation revealed that CH3NH3PbBr3 - x Cl-x (x = 0-3) were successfully formed on glass substrate self-assembly and oriented with the a-axis. Owing to due to their large exciton binding energy, these materials showed clear exciton absorption and free-exciton emission in the visible region at room temperature. Replacing Br with CI made it possible to control the band structure of these materials. As a result, the peak position of the exciton band shifted continuously towards blue region with increasing the CI content in the films. (C) 2002 Kluwer Academic Publishers.

引用

页码：3585 / 3587

页数：3

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