标题: | Time-resolved photoluminescence of isoelectronic traps in ZnSe1-xTex semiconductor alloys |
作者: | Lin, Y. C. Chou, W. C. Fan, W. C. Ku, J. T. Ke, F. K. Wang, W. J. Yang, S. L. Chen, W. K. Chang, W. H. Chia, C. H. 电子物理学系 Department of Electrophysics |
关键字: | hopping conduction;II-VI semiconductors;localised states;photoluminescence;radiative lifetimes;selenium compounds;spectral line breadth;time resolved spectra;valence bands;zinc compounds |
公开日期: | 15-十二月-2008 |
摘要: | Kohlrausch's stretched exponential law correlates well with the photoluminescence (PL) decay profiles of ZnSe1-xTex. As the Te concentration increases, the stretching exponent beta initially declines and then monotonically increases. This result can be understood using the hopping-transport and energy transfer model. The increase in the number of isoelectronic Te localized traps can reduce the PL decay rate and increase the linewidth, whereas the hybridization of the Te localized states with the valence-band edge states causes a reduction in both the lifetime and linewidth. |
URI: | http://dx.doi.org/10.1063/1.3054162 http://hdl.handle.net/11536/149711 |
ISSN: | 0003-6951 |
DOI: | 10.1063/1.3054162 |
期刊: | APPLIED PHYSICS LETTERS |
Volume: | 93 |
显示于类别: | Articles |