DFT modeling of carbon incorporation in GaN(0001) and GaN(000 1 ¯ ) metalorganic vapor phase epitaxy
The carbon incorporation mechanism in GaN(0001) and GaN(000 1 ¯ ) during MOVPE was investigated using density functional theory (DFT) calculations. The results confirm that the crucial factors for carbon incorporation are Fermi level pinning and accompanying surface band bending. In addition, the la...
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Published in | Applied physics letters Vol. 111; no. 14 |
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Main Authors | , , , , , , , |
Format | Journal Article |
Language | English |
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American Institute of Physics
02.10.2017
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ISSN | 0003-6951 1077-3118 |
DOI | 10.1063/1.4991608 |
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Abstract | The carbon incorporation mechanism in GaN(0001) and GaN(000
1
¯
)
during MOVPE was investigated using density functional theory (DFT) calculations. The results confirm that the crucial factors for carbon incorporation are Fermi level pinning and accompanying surface band bending. In addition, the lattice symmetry has a strong dependence on the stability of carbon in a few subsurface layers, which results from interactions between the impurities and surface states. It was shown that these effects are responsible for facilitating or hindering the incorporation of impurities and dopants. The influence of diluent gas species (hydrogen or nitrogen) on carbon incorporation was discussed. |
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AbstractList | The carbon incorporation mechanism in GaN(0001) and GaN(0001¯) during MOVPE was investigated using density functional theory (DFT) calculations. The results confirm that the crucial factors for carbon incorporation are Fermi level pinning and accompanying surface band bending. In addition, the lattice symmetry has a strong dependence on the stability of carbon in a few subsurface layers, which results from interactions between the impurities and surface states. It was shown that these effects are responsible for facilitating or hindering the incorporation of impurities and dopants. The influence of diluent gas species (hydrogen or nitrogen) on carbon incorporation was discussed. The carbon incorporation mechanism in GaN(0001) and GaN(000 1 ¯ ) during MOVPE was investigated using density functional theory (DFT) calculations. The results confirm that the crucial factors for carbon incorporation are Fermi level pinning and accompanying surface band bending. In addition, the lattice symmetry has a strong dependence on the stability of carbon in a few subsurface layers, which results from interactions between the impurities and surface states. It was shown that these effects are responsible for facilitating or hindering the incorporation of impurities and dopants. The influence of diluent gas species (hydrogen or nitrogen) on carbon incorporation was discussed. |
Author | Kakimoto, Koichi Krukowski, Stanislaw Kempisty, Pawel Bockowski, Michal Kusaba, Akira Kangawa, Yoshihiro Amano, Hiroshi Shiraishi, Kenji |
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Cites_doi | 10.1103/PhysRevB.93.245201 10.1063/1.4983453 10.1016/S0022-0248(02)01348-9 10.1002/1521-3951(200212)234:3<864::AID-PSSB864>3.0.CO;2-X 10.1063/1.1498879 10.1088/0256-307X/31/3/037102 10.1016/j.jcrysgro.2016.12.044 10.7567/JJAP.55.05FE04 10.1063/1.4707386 10.1016/j.jcrysgro.2012.10.023 10.1016/j.jcrysgro.2007.12.051 10.1088/0953-8984/14/11/302 10.1039/C5TC03989D 10.1103/PhysRevB.89.035204 10.1143/JJAP.19.2395 10.7567/APEX.10.011003 10.1063/1.4983452 10.1007/s11664-000-0087-3 10.1103/PhysRevB.73.235116 10.1063/1.4962017 10.7567/JJAP.56.070304 |
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Snippet | The carbon incorporation mechanism in GaN(0001) and GaN(000
1
¯
)
during MOVPE was investigated using density functional theory (DFT) calculations. The results... The carbon incorporation mechanism in GaN(0001) and GaN(0001¯) during MOVPE was investigated using density functional theory (DFT) calculations. The results... |
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SubjectTerms | Applied physics Carbon Density functional theory Dependence Fermi surfaces Impurities Incorporation Metalorganic chemical vapor deposition |
Title | DFT modeling of carbon incorporation in GaN(0001) and GaN(000 1 ¯ ) metalorganic vapor phase epitaxy |
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