1. The Institute of Applied Physics and Materials Engineering University of Macau Avenida da Universidad Taipa Macau 999078 P. R. China
2. Department of Electrical and Electronic Engineering Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
3. School of Materials Science and Engineering Hubei University Wuhan Hubei 430062 P. R. China
4. Department of Chemistry Southern University of Science and Technology Shenzhen Guangdong 518055 P. R. China
5. College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen Guangdong 518060 P. R. China