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Proceedings Paper

Investigation of band gaps and bowing parameters for zincblende III-nitride ternary alloys
Author(s): Bo-Ting Liou; Sheng-Horng Yen; Yen-Kuang Kuo
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Paper 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

Paper Details

Date Published: 3 March 2006
PDF: 9 pages
Proc. SPIE 6121, Gallium Nitride Materials and Devices, 61210M (3 March 2006); doi: 10.1117/12.644464
Show Author Affiliations
Bo-Ting Liou, Hsiuping Institute of Technology (Taiwan)
Sheng-Horng Yen, National Changhua Univ. of Education (Taiwan)
Yen-Kuang Kuo, National Changhua Univ. of Education (Taiwan)


Published in SPIE Proceedings Vol. 6121:
Gallium Nitride Materials and Devices
Cole W. Litton; James G. Grote; Hadis Morkoc; Anupam Madhukar, Editor(s)

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