Optical properties of hydrogenated ZnO-Ga thin films studied by spectroscopic ellipsometry

被引:0
|
作者
Yang Jiao [1 ]
Gao Mei-Zhen [1 ]
机构
[1] Lanzhou Univ, Sch Phys Sci & Technol, Minist Educ, Key Lab Magnetism & Magnet Mat, Lanzhou 730000, Peoples R China
基金
中国国家自然科学基金;
关键词
GZO thin film; hydrogen treatment; spectroscopic ellipsometry; double oscillator model; ZINC-OXIDE; TRANSPARENT; DEPOSITION;
D O I
暂无
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
The effects of Ga doping on structural, electrical, and optical properties of hydrogenated ZnO-Ga (GZO) thin films deposited by sol-gel technique have been investigated. From the X-ray diffraction observations, the films doped with different gallium concentrations were found to be pure wurtzite-structured ZnO. The electrical properties of the hydrogen -annealed films were improved and a lowest resistivity of 3. 410 x 10(-3) Omega.cm was obtained. The refractive index and extinction coefficient of ZnO-Ga thin films were determined in the range of 270 1600 nm by varying angle spectroscopic ellipsometry (VASE). The simulation was carried out using a double oscillator model, which includes the Psemi-MO equation and the rho-tau Drude equation.
引用
收藏
页码:6 / 10
页数:5
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