Mechanisms of enhancing band-edge luminescence of Zn1-xMgxO prepared by the sol-gel method

作者：Lin Yow Jon^*; Wu Ping Hsun; Tsai Chia Lung; Liu Chia Jyi; Lee Ching Ting; Chang Hsing Cheng; Lin Zhi Ru; Jeng Kai Yi

来源：Journal of Physics D: Applied Physics , 2008, 41(12): 125103.

DOI：10.1088/0022-3727/41/12/125103

Zn1-xMgxO films prepared with different x were deposited on substrates by the sol-gel technique. X-ray photoelectron spectroscopy, x-ray diffraction, atomic force microscopy, photoluminescence and conductivity measurements were used to characterize the Zn1-xMgxO films. The yield in the intensity of the band-edge luminescence (BEL) is seen to increase up to 21-fold for Zn0.94Mg0.06O and up to 4-fold for Zn0.958Mg0.042O compared with the Zn0.973Mg0.027O film. The enhanced BEL intensity has been attributed to an increase in the nonradiative recombination lifetime, a reduction in the oxygen-vacancy related defects and a reduction in the refractive index of the Zn1-xMgxO film.

• 出版日期2008-6-21