Author(s)

Shaoguang Dong, Junhuo Zhuang, Yaguang Zeng

Physics and Illumination Department of Foshan University, Foshan, China.

Al-induced crystallization yields the larger grain and (111)-orientation planes of poly-Ge thin film grown on SiO₂ substrate, the (111)-orientation planes of poly-Ge thin film grown on SiO₂ substrate are very important for the superior performance electronics and solar cells. We discussed the 50 nm thickness poly-Ge thin film grown on SiO₂ substrate by Alinduced crystallization focusing on the lower annealing temperature and the diffusion control interlayer between Ge and Al thin film. The (111)-orientation planes ratio of poly-Ge thin film achieve as high as 90% by merging the lower annealing temperature (325℃) and the GeOx diffusion control interlayer. Moreover, we find the lack of defects on poly-Ge thin film surface and the larger average grains size of poly-Ge thin film over 12 μm were demonstrated by electron backscatter diffraction measurement. Our results turn on the feasibility of fabricating electronic and optical device with poly-Ge thin film grown on SiO₂ substrate.

Al-Induced Crystallization, Poly-Ge Thin Film, Diffusion Control Interlayer, Lower Annealing Temperature

Dong, S. , Zhuang, J. and Zeng, Y. (2018) The Larger Grain and (111)-Orientation Planes of Poly-Ge Thin Film Grown on SiO₂ Substrate by Al-Induced Crystallization. Journal of Materials Science and Chemical Engineering, 6, 22-32. doi: 10.4236/msce.2018.62003.