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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51659

Title: Optical Characterization of Zn095-xBe005MnxSe Mixed Crystals
Authors: H. P. Hsu
T. W. Chang
Y. S. Huang
F. Firszt
S. Łegowski
H Meczynska
A. Marasek
K. Strzałkowski
K. K. Tiong
M. Munoz
Contributors: 國立臺灣海洋大學:電機工程學系
Keywords: Diluted magnetic semiconductors
Contactless electroreflectance
Surface photovoltage spectroscopy
Date: 2008-07-15
Issue Date: 2018-12-14T05:49:57Z
Abstract: Abstract: Temperature-dependent photoluminescence (PL), contactless electroreflectance (CER) and surface photovoltage spectroscopy (SPS) characterizations of two Zn0.95−xBe0.05MnxSe mixed crystals with Mn contents x = 0.05 and 0.20 grown by using the modified high-pressure Bridgman method has been carried out in the temperature range of 15 -- 300 K. A typical PL spectrum at low temperature consists of a free exciton line, an edge emission due to recombination of shallow donor-acceptor pairs and Mn2+-related intra-ionic emissions. The near band edge transition energies are determined by analyzing the CER and the SPS spectra. The peak positions of the exciton emission lines in the PL spectra correspond quite well to the energies of the fundamental transitions determined from CER and SPS data. The parameters that describe the temperature dependence of the transition energy of the fundamental band-edge exciton are evaluated and discussed.
Relation: 53 pp.77-82
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51659
Appears in Collections:[電機工程學系] 期刊論文

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