人工晶体学报2012，Vol.41Issue(4)：922-925,4.
CdZnTe晶体位错处的Raman光谱及PL谱研究
Raman and Photoluminescence Study on Dislocations in CdZnTe Crystal
摘要
Abstract
The Raman spectra were acquired in CdZnTe crystal in both dislocation free zone and dislocation densing region. With the spectra obtained in the dislocation free zone, the phonon peaks A1 (Te precipitates), TO, (CdTe-like), TO2(ZnTe-like) are seen. Raman spectra obtained in dislocation densing region are consistent with A, and TO, modes, but TO2 peak disappeared. Further photolumince spectrum of CdZnTe crystal in dislocation densing region are investigated by photoluminescence microscopy with temperature from 10 K to 150 K. The results showed that the nonradiative recombination of electron-hole pairs absorb the energy of TO2 phonon, causing the lack of TO2 peak in Raman spectra obtained in dislocation densing region.关键词
CdZnTe/位错/Raman光谱Key words
CdZnTe/ dislocation/ Raman spectrum分类
信息技术与安全科学引用本文复制引用
曾冬梅,周海,殷业财..CdZnTe晶体位错处的Raman光谱及PL谱研究[J].人工晶体学报,2012,41(4):922-925,4.基金项目
国家自然科学基金(青年基金)(51002012) （青年基金）
