Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10639956 | Materials Science and Engineering: B | 2005 | 4 Pages |
Abstract
Properties of some GaN layers with different blue luminescence relative intensity were investigated by photoluminescence, Rutherford backscattering/channeling and double crystal X-ray diffraction, respectively. The surface minimum yields Ïmin of Rutherford backscattering/channeling and the FWHM of double crystal X-ray diffraction obviously increase with the increase of the intensity ratio of the blue luminescence to the band-edge emission. The blue luminescence is due to some intrinsic defects that can largely deteriorate the crystalline quality of GaN films. The luminescence mechanism of the blue luminescence in unintentional doped GaN films is different from that of the blue luminescence about 2.9Â eV in GaN:Mg films.
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Authors
Shuti Li, Fengyi Jiang, Guangfan Han, Li Wang, Chuanbing Xiong, Xuexin Peng, Hunlan Mo,