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題名: | Band-Gap Bowing Parameters of the Zincblende Ternary III–Nitrides Derived from Theoretical Simulation |
作者: | Lin, Wen-Wei;Kuo, Yen-Kuang;Liou, Bo-Ting |
貢獻者: | 物理學系 |
關鍵詞: | Ternary III-nitride alloy;Band-gap energy;Band-gap bowing parameter;Numerical simulation |
日期: | 2004-01
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上傳時間: | 2012-07-19T01:46:51Z
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出版者: | The Japan Society of Applied Physics |
摘要: | The band-gap bowing parameters of unstrained zincblende ternary III–nitride alloys are investigated numerically with the CASTEP simulation program. Direct and indirect band-gap bowing parameters of 1.379 eV and 1.672 eV for InxGa1-xN, 0.755 eV and 0.296 eV for AlxGa1-xN, and 2.729 eV and 3.624 eV for AlxIn1-xN are obtained. Simulation results show that the direct band-gap energy is always smaller than its indirect counterpart for InxGa1-xN, indicating that the zincblende InxGa1-xN is a direct band-gap semiconductor. There is a direct-indirect crossover near x=0.571 for AlxGa1-xN, and x=0.244 for AlxIn1-xN. The relationship between band-gap energy and lattice constant for zincblende InxGa1-xN, AlxGa1-xN, and AlxIn1-xN is also provided. |
關聯: | Japanese Journal of Applied Physics, 43(1): 113-114 |
顯示於類別: | [物理學系] 期刊論文
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