Optical absorption of Co2+ in AgIn5S8 and CuIn5S8 spinel crystals

被引：6

作者：

Lee, SJ ^{[1
]}

Kim, JE ^{[1
]}

Park, HY ^{[1
]}

机构：

[1] Korea Adv Inst Sci & Technol, Dept Phys, Taejon 305701, South Korea

来源：

JAPANESE JOURNAL OF APPLIED PHYSICS PART 1-REGULAR PAPERS SHORT NOTES & REVIEW PAPERS | 2003年 / 42卷 / 6A期

关键词：

AgIn5S8; CuIn5S8; spinel crystal; cobalt impurity; optical absorption;

D O I：

10.1143/JJAP.42.3337

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The optical absorption spectra of cobalt-doped AgIn5S8 and CuIn5S8 single crystals grown by a chemical transport reaction method were investigated at 7 K. The absorption peaks due to the Co2+ impurities are well explained in terms of the T-d crystal field and the second-order spin-orbit coupling effect. The values of Dq and B calculated from the observed spectra show that the d electron delocalization is slightly larger in the host crystal CuIn5S8 than in AgIn5S8. This may be caused by the shorter tetrahedral bond length of Co-S in CuIn5S8:Co2+ than in AgIn5S8:Co2+.

引用

页码：3337 / 3339

页数：3