1. Guangdong Provincial Key Laboratory of Quantum Engineering and Quantum Materials, Guangdong Engineering Technology Research Center of Efficient Green Energy and Environment Protection Materials, School of Physics and Telecommunication Engineering, South China Normal University, Guangzhou 510006, P. R. China
2. School of Electronics and Information Engineering, South China Normal University, Foshan 528225, P. R. China
3. Materials Research Laboratory, Department of Physics, University of Mandalay, 05032 Mandalay, Myanmar
4. Universities’ Research Centre, University of Yangon, Yangon 11041, Myanmar
5. Joint Key Laboratory of the Ministry of Education, Institute of Applied Physics and Materials Engineering, University of Macau, Avenida da Universidade, Taipa, Macau 999078, P. R. China