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题名: Temperature-dependent photoluminescence characterization of Cd1−x−yBexZnySe mixed crystals
作者: J Z Wang;P J Huang1;Y S Huang;F Firszt;S Łęgowski;H Męczyńska;A Marasek;K K Tiong
贡献者: NTOU:Department of Electrical Engineering
日期: 2007
上传时间: 2011-10-21T02:38:49Z
出版者: Journal of Physics: Condensed Matter
摘要: Abstract:Temperature-dependent photoluminescence (PL) characterization of a series of wurtzite-type Cd1−x−yBexZnySe mixed crystals has been carried out in the temperature range between 15 and 300 K. The samples were grown by the modified high pressure Bridgman method. A typical PL spectrum at low temperature consists of an exciton line, an edge emission due to recombination of shallow donor–acceptor pairs and a broad band related to recombination through deep level defects. The peak positions of the excitonic emission line in the PL spectra correspond quite well to the transition energies of exciton A from previously reported electromodulation reflectance data (Liu et al 2005 J. Appl. Phys. 98 083519). The parameters that describe the temperature dependence of the transition energy and broadening parameter of the band-edge excitonic emission are evaluated and discussed.
關聯: 19(9), pp.096216-096225
显示于类别:[電機工程學系] 期刊論文


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