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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51631

Title: Piezoreflectance and photoreflectance study of annealing effects on GaAs0.916Sb0.084 and GaAs0.906Sb0.075N0.019 films on GaAs grown by gas-source molecular beam epitaxy
Authors: H. P. Hsu
Y. N. Huang
Y. S. Huang
Y. T. Lin
T. C. Ma
H. H. Lin
K. K. Tiong
P. Sitarek
J. Misiewicz
Contributors: 國立臺灣海洋大學:電機工程學系
Date: 2009
Issue Date: 2018-12-13T03:18:20Z
Publisher: physica status solidi A
Abstract: Abstract: Thermal annealing effects of GaAs0.916Sb0.084 and GaAs0.906Sb0.075N0.019 films grown on GaAs substrates by gas-source molecular beam epitaxy have been characterized by piezoreflectance (PzR) and photoreflectance (PR). By a comparison of relative intensity of PzR and PR spectra, the identification of conduction to heavy-hole (HH) band and conduction to light-hole (LH) band transitions originated from the strained induced valence band splitting have been achieved. The near band edge transition energies are blue-shifted, and the splitting of HH and LH bands is reduced after thermal annealing treatment. The annealing effects of GaAs0.906Sb0.075N0.019 are found to be more pronounced than that of GaAs0.916Sb0.084. The temperature dependences of near band edge transition energies are analyzed using Varshni and Bose–Einstein expressions in the temperature range from 15 K to 300 K. The parameters that describe the temperature variations of the near band edge transition energies are evaluated and discussed. (© 2009 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)
Relation: 206(5) pp.830-835
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/51631
Appears in Collections:[電機工程學系] 期刊論文

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