LYU Wei, LIU Jun, ZHAO Peng-yu etc. (002) Preferred Oriented AlN Films Grown by DC Magnetron Sputtering and Photoluminescence[J]. Chinese Journal of Luminescence, 2019,40(6): 719-724
LYU Wei, LIU Jun, ZHAO Peng-yu etc. (002) Preferred Oriented AlN Films Grown by DC Magnetron Sputtering and Photoluminescence[J]. Chinese Journal of Luminescence, 2019,40(6): 719-724 DOI: 10.3788/fgxb20194006.0719.
(002) Preferred Oriented AlN Films Grown by DC Magnetron Sputtering and Photoluminescence
The AlN thin films with (002) preferred orientation was deposited on the glass substrate by DC magnetron reactive sputtering method under different nitrogen concentration. The structure and surface pattern of AlN films were characterized by X-ray diffraction(XRD) and scanning electron microscope(SEM). The luminescence properties of AlN thin films were also investigated by photoluminescence(PL) spectra. The results show that the AlN thin films deposited under different nitrogen concentration all present (002) preferred orientation with uniformly dense surface and the average size of the grains is about 20 nm. The PL spectra shows that the AlN thin films deposited under different nitrogen all have a strong emission at 550 nm originating from the defect of V
Al
transiting to the VB. There are several weak defect emissions at 589
614
654 nm. These defect emissions become more obvious with the N
2
concentration increasing. The weak emissions at 589
614
654 nm can be ascribed to transition from O
N
-O
N
to V
Al
-2O
N
from CB to oxygen impurities(I
O
) and from V
Al
-O
N
to VB respectively.
关键词
Keywords
references
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