Comparative study on the excitons in lead-halide-based perovskite-type crystals CH3NH3PbBr3CH3NH3PbI3

被引：827

作者：

Tanaka, K

Takahashi, T

Ban, T

Kondo, T

Uchida, K

Miura, N

机构：

[1] Univ Tokyo, Dept Mat Sci, Bunkyo Ku, Tokyo 1138656, Japan

[2] Univ Tokyo, Inst Solid State Phys, Chiba 2278581, Japan

来源：

SOLID STATE COMMUNICATIONS | 2003年 / 127卷 / 9-10期

关键词：

optical properties; magnetoabsorption;

D O I：

10.1016/S0038-1098(03)00566-0

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Optical absorption and magnetoabsorption spectra of the lead-halide-based perovskite-type crystals, CH3NH3PbX3 (X = Br, I) have been investigated. The lowest-energy excitons in these crystals are normal three-dimensional Wannier-type excitons. Bohr radii, binding energies, reduced masses, effective g factors, and oscillator strengths of the excitons have been determined with satisfactory accuracy. A larger bandgap and more tightly bound nature of the excitons in CH3NH3PbBr3 compared to those in CH3NH3PbI3 are a natural consequence of the halogen substitution. (C) 2003 Elsevier Ltd. All rights reserved.

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页码：619 / 623

页数：5

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