1. College of Physics and Information Engineering, Fuzhou University, Fuzhou 350116, China
2. FZU-Jinjiang Joint Institute of Microelectronics, Jinjiang Science and Education Park, Fuzhou University, Jinjiang 362200, China
3. Institute of Materials Research and Engineering, 2 Fusionopolis Way, Innovis, #08-03, Agency for Science, Technology and Research, Singapore 138634, Singapore
4. Global Foundries, 60 Woodlands Industrial Park D Street 2, Singapore 738406, Singapore