Optical Properties of Transition-metal-doped ZnO Single Crystals

被引：0
|
作者：
Shin, Y. H. [1 ]
Park, Y. H. [1 ]
Kim, Yongmin [1 ]
机构：
[1] Dankook Univ, Dept Appl Phys, Yongin 448701, South Korea
来源：
JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2010年 / 56卷 / 02期
关键词：
ZnO; Raman; Photoluminescence; BULK; PHOTOLUMINESCENCE;
D O I：
10.3938/jkps.56.567
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report the optical properties of transition-metal-doped (Fe and Mn) ZnO single crystals. The room temperature Raman shifts from both crystals show qualitatively identical behaviors that of the wurtzite ZnO crystal. Low-temperature (5 K) photoluminescence emissions from the ZnFeO crystal show neutral and ionized donor bound excitons along with a free exciton transition whereas those from the ZnMnO crystal exhibit only a neutral donor bound exciton at 5 K and a free exciton emerge.,, at above 30 K. With increasing temperature, bound excitons in both samples quench immediately while free excitons remain to room temperature. We try to analyze the temperature dependence of the photoluminescence transitions by adopting the Arrehnius fitting technique to discuss binding energies of different bound excitons.
引用
收藏
页码：567 / 570
页数：4
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