Two-dimensional Wannier excitons in a layered-perovskite-type crystal (C6H13NH3)2PbI4

被引：81

作者：

Tanaka, K

Sano, F

Takahashi, T

Kondo, T

Ito, R

Ema, K

机构：

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

[2] Meiji Univ, Dept Phys, Tama Ku, Kawasaki, Kanagawa 2148571, Japan

[3] Sophia Univ, Dept Phys, Chiyoda Ku, Tokyo 1028554, Japan

来源：

SOLID STATE COMMUNICATIONS | 2002年 / 122卷 / 05期

关键词：

quantum wells; optical properties; nonlinear optics;

D O I：

10.1016/S0038-1098(02)00126-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Wannier series excitons have been identified by electroabsorption and two-photon absorption spectroscopy on a layered-perovskite-type Crystal (C6H13NH3)(2)PbI4. 1s, 2s, 2p, 3p excitons are located at 2.34, 2.60, 2.61, and 2.64 eV, respectively. This finding indicates the excitons in this system exhibit a relatively strong two-dimensional character. The large binding energy of the Is exciton (>300 meV) is considerably enhanced by the dielectric confinement effect. (C) 2002 Elsevier Science Ltd. All rights reserved.

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页码：249 / 252

页数：4

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