Composition Dependence of the Band Gap Energy of Dilute Bismuth and Nitride GaN x Bi y As1−y−z Alloy (0 ≤ x ≤ 0.05, 0 ≤ y ≤ 0.05)
The band gap evolution of dilute bismuth and nitride GaNxBiyAs1−x−y alloy is analyzed. It is found that the location of the Г conduction band minimum (CBM) of GaNxBiyAs1−x−y is determined by two factors. One is the influence of the Bi content on the Г CBM of GaAs. The other is the interaction and th...
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Published in | Journal of electronic materials Vol. 47; no. 8; pp. 4539 - 4543 |
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Main Authors | , , , , |
Format | Journal Article |
Language | English |
Published |
Warrendale
Springer Nature B.V
01.08.2018
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Subjects | |
Online Access | Get full text |
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Summary: | The band gap evolution of dilute bismuth and nitride GaNxBiyAs1−x−y alloy is analyzed. It is found that the location of the Г conduction band minimum (CBM) of GaNxBiyAs1−x−y is determined by two factors. One is the influence of the Bi content on the Г CBM of GaAs. The other is the interaction and the hybridization between the N level and the Г CBM of GaBiyAs1−y. For the Г valence band maximum (VBM) of GaNxBiyAs1−x−y, the main factor to determine its location is the interaction and the hybridization between the Bi level and the Г VBM of GaAs. According to the physical mechanism for the band gap evolution, a model is established to depict the band gap energy of GaNxBiyAs1−x−y depending on N and Bi contents quantitatively. The results obtained using the model are consistent with the experimental data. |
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ISSN: | 0361-5235 1543-186X |
DOI: | 10.1007/s11664-018-6317-3 |