OPTICALLY INDUCED CHARGE-TRANSFER PATHS BETWEEN DEFECTS IN BATIO3 CONTAINING RHODIUM

被引：24

作者：

KROSE, H ^{[1
]}

POSSENRIEDE, E ^{[1
]}

SCHARFSCHWERDT, R ^{[1
]}

VARNHORST, T ^{[1
]}

SCHIRMER, OF ^{[1
]}

HESSE, H ^{[1
]}

KUPER, C ^{[1
]}

机构：

[1] UNIV OSNABRUCK,FACHBEREICH PHYS,D-49069 OSNABRUCK,GERMANY

来源：

OPTICAL MATERIALS | 1995年 / 4卷 / 2-3期

关键词：

Hole trap - Optical method - Photorefractive crystals;

D O I：

10.1016/0925-3467(94)00053-0

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

An optical method is presented which allows to identify at room temperature the photoinduced charge transfers between different defects in photorefractive crystals. The analysis is based on the labelling of the optical spectra with the corresponding microscopic defect models, obtained from simultaneously recording light induced ESR and optical absorption changes at low temperatures. The investigation of as-grown BaTiO3 crystals containing Rh, using this method, shows that illumination with light of energies between 1.2 eV and 2.5 eV transfers holes from Rh4+ to Fe3+. At E > 2.5 eV holes are photoionized from Fe4+ to Rh3+ and to an unidentified shallower hole trap.

引用

页码：153 / 157

页数：5