LIGHT-INDUCED CHARGE-TRANSPORT IN BATIO3 VIA 3 CHARGE STATES OF RHODIUM

被引：52

作者：

KROSE, H

SCHARFSCHWERDT, R

SCHIRMER, OF

HESSE, H

机构：

[1] Fachbereich Physik, Universität Osnabrück, Osnabrück

来源：

APPLIED PHYSICS B-LASERS AND OPTICS | 1995年 / 61卷 / 01期

关键词：

D O I：

10.1007/BF01090965

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

By combined studies of electron spin resonance and optical absorption at low temperatures, the charge-transfer bands of Rh5+ and Rh4+ are identified to be peaked near 1.6 and 1.9 eV, respectively. On this basis, the light-induced charge-transfer processes in BaTiO3:Rh are unraveled at room temperature. It is shown that three charge states of Rh are involved, leading to two levels: the shallow Rh-4+/5+ and the deeper Rh-3+/4+ level. The optical behaviour of these two levels corresponds to those expected from a 'two-center' model. The present paper represents the first atomic-scale identification of three charge states of one element leading to optical 'two-level' response.

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页码：1 / 7

页数：7

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