1. College of Physics and Electronic Engineering, Hengyang Normal University, Hengyang 421010, P. R. China
2. Wenzhou XINXINTAIJING Tech. Co., Ltd., Wenzhou 325006, P. R. China
3. School of Materials Science and Engineering, State Key Laboratory of Silicon and Advanced Semiconductor Materials, Zhejiang University, Hangzhou 310027, P. R. China
4. Wenzhou Key Laboratory of Novel Optoelectronic and Nano Materials, Zhejiang Provincial Engineering Research Center of Oxide Semiconductors for Environmental and Optoelectronic Applications, Institute of Wenzhou, Zhejiang University, Wenzhou 325006, P. R. China
5. Shanxi-Zheda Institute of Advanced Materials and Chemical Engineering, Shanxi 030000, P. R. China