OPTICAL-PROPERTIES OF UNDOPED AND CO-DOPED SBSBR AND BISBR SINGLE-CRYSTALS

被引:9
作者
JIN, MS [1 ]
PARK, KH [1 ]
KIM, HG [1 ]
CHOE, SH [1 ]
PARK, BS [1 ]
HYUN, SC [1 ]
KIM, WT [1 ]
机构
[1] CHONNAM NATL UNIV,DEPT PHYS,SOLID STATE PHYS LAB,KWANGJU 500757,SOUTH KOREA
关键词
D O I
10.1088/0268-1242/10/8/021
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
SbSBr, BiSBr, SbSBr:Co and BiSBr:Co single crystals were grown by the Bridgman technique. The grown single crystals crystallize in an orthorhombic structure and have an indirect band structure. The temperature dependence of the optical energy gap for the single crystals shows anomalies at the first- and second-order phase transition points. Cobalt dopants are located at the T-d symmetry point in the host single crystals as Co2+ and Co3+ ions. Impurity optical absorption peaks due to the electron transitions between the energy levels of the Co2+ and Co3+ ions are observed.
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页码:1167 / 1171
页数:5
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