33rd International Conference on the Physics of Semiconductors | |
Properties of intensive defect-related band in photoluminescence spectra of heavily doped AlxGa1-xN:Si layers | |
Osinnykh, I.V.^1,3 ; Malin, T.V.^1 ; Plyusnin, V.F.^2,3 ; Zhuravlev, K.S.^1,3 | |
Rzhanov Institute of Semiconductor Physics, Siberian Branch, Russian Academy of Sciences, Lavrentieva av. 13, Novosibirsk | |
630090, Russia^1 | |
Voevodsky Institute of Chemical Kinetics and Combustion, Siberian Branch, Russian Academy of Sciences, Institutskaya 3, Novosibirsk | |
630090, Russia^2 | |
Novosibirsk State University, Pirogova 2, Novosibirsk | |
630090, Russia^3 | |
关键词: Defect-related bands; Donor acceptors; Free electron; Photoluminescence investigation; Photoluminescence spectrum; Sapphire substrates; Transition level; Visible spectral range; | |
Others : https://iopscience.iop.org/article/10.1088/1742-6596/864/1/012071/pdf DOI : 10.1088/1742-6596/864/1/012071 |
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来源: IOP | |
【 摘 要 】
We report photoluminescence investigations of heavily doped AlxGa1-xN:Si films grown by molecular beam epitaxy on sapphire substrates. The wide intensive defect-related band dominates in the photoluminescence spectra of AlxGa1-xN:Si films with the Al content higher than 0.38 covering the whole visible spectral range. This band is attributed to donor-acceptor and free electron-acceptor transitions involving the same acceptor. The acceptor ionization energy of about 1.87 eV for heavily doped AlN:Si was obtained, decrease of Al content leads to decrease of the acceptor ionization energy. The donor was assigned to the Si atom on the Ga/Al site; the acceptor might be (0/-) transition level of the CNor (2-/3-) transition level of the VAl.
【 预 览 】
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Properties of intensive defect-related band in photoluminescence spectra of heavily doped AlxGa1-xN:Si layers | 1987KB | download |