Affiliation: | 1.Department of Physics, Government College University, Allama Iqbal Road, Faisalabad, 38000, Pakistan ;2.Advanced Key Laboratory for New Ceramics, School of Materials Science and Engineering, Tsinghua University, Beijing, 100084, China ;3.Department of Physics, University of Agriculture, Faisalabad, Pakistan ;4.Institute for Advanced Study, Shenzhen University, Shenzhen, 518060, Guangdong, China ;5.Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Optoelectronic Engineering, Shenzhen University, Shenzhen, 5180603, Guangdong, China ; |