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Title: Investigation of Band Gaps and Bowing Parameters for Zincblende III-nitride Ternary Alloys
Authors: Liou, Bo-Ting;Yen, Sheng-Horng;Kuo, Yen-Kuang
Contributors: 物理學系
Keywords: III-nitride semiconductor;Lattice constant;Band gap bowing parameter
Date: 2006-02
Issue Date: 2012-07-19T01:50:24Z
Publisher: SPIE--The International Society for Optical Engineering
Abstract: The zincblende InxGa1-xN, AlxGa1-xN, and AlxIn1-xN alloys are studied by numerical analysis based on first-principles calculations. The results show that the lattice constant of the three alloys obeys the Vegard's law. For InxGa1-xN the direct band gap bowing parameter obtained with the equilibrium lattice constant is 1.890 � 0.097 eV. For AlxGa1-xN the direct and indirect bowing parameters of 0.574 � 0.034 eV and 0.055 � 0.038 eV are obtained, and there is a direct-indirect crossover near x = 0.56. For AlxIn1-xN the direct and indirect bowing parameters of 3.5694 � 0.028 eV and 0.1953 � 0.054 eV are obtained, and there is a direct-indirect crossover near x = 0.807
Relation: Proceedings of SPIE, 6121: 189-197 (GaN Materials and Devices)
Appears in Collections:[Department of Physics] Proceedings

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