Photo-induced polaron states in strontium titanate

被引：17

作者：

Hasegawa, T ^{[1
]}

Tanaka, K ^{[1
]}

机构：

[1] Kyoto Univ, Grad Sch Sci, Dept Phys, Sakyo Ku, Kyoto 6068502, Japan

来源：

JOURNAL OF LUMINESCENCE | 2001年 / 94卷

基金：

日本学术振兴会;

关键词：

persistent spectral-hole burning; photo-induced absorption; small polarons;

D O I：

10.1016/S0022-2313(01)00268-X

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

Photo-induced absorption spectra are investigated under band-to-band excitation in SrTiO3 at low temperatures. A broad photo-induced absorption band is observed in the middle of the band gap. Persistent spectral hole burning and non-radiative recombination of photo-excited carriers are efficiently induced by stimulation into the photo-induced absorption band. It is suggested that the photo-induced absorption band is originated from small polaron states of electrons and holes. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：15 / 18

页数：4

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