[1
]Key Laboratory of Materials Physics of Ministry of Education, School of Physics and
Microelectronics, Zhengzhou University, Daxue Road 75, Zhengzhou 450052, China
[2
]State Key Laboratory on Integrated Optoelectronics, Key Laboratory of Automobile Materials
of MOE, and College of Materials Science and Engineering, Jilin University, Changchun
130012, China
[3
]State Key Laboratory on Integrated Optoelectronics, College of Electronic Science
and Engineering, Jilin University, Qianjin Street 2699, Changchun 130012, China