PHOTOCONDUCTIVITY IN KTAO3LI SINGLE-CRYSTALS

被引：37

作者：

KLEIN, RS ^{[1
]}

KUGEL, GE ^{[1
]}

GLINCHUK, MD ^{[1
]}

KUZIAN, RO ^{[1
]}

KONDAKOVA, IV ^{[1
]}

机构：

[1] KIEV MAT SCI INST, KIEV 25280, UKRAINE

来源：

PHYSICAL REVIEW B | 1994年 / 50卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.50.9721

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Photoconductive currents of the same order of magnitude as in conventional impurity-dope semiconductors have been observed at temperatures lower than 80 K in the K1-xLixTaO3 (KTL) mixed system (with 0.016 less-than-or-equal-to x less-than-or-equal-to 0.05) and under light illumination with energy lower than the band gap. The dependence of the photoconductivity on temperature, Li concentration, and external electric field as well as on sample history and treatment is studied. The results are interpreted and discussed on the basis of a model allowing a calculation of the impurity levels taking into account the displacement of the oxygen ions nearest to the off-center position of the Li+.

引用

页码：9721 / 9728

页数：8

共 26 条

[1]

Bube R. H., 1960, PHOTOCONDUCTIVITY SO

[2]

BUBE RH, 1974, ELECTRONIC PROPERTIE

[3]

BYKOV IP, 1983, SOV PHYS-SOLID STATE, V25, P2153

[4]

Fridkin V. M., 1979, PHOTOFERROELECTRICS