[1] College of Information Technical Science, Nankai University, Tianjin 300071, China
[2] College of Materials Science and Engineering, Nanchang Institute of Aeronautical Technology, Nanchang 340034, China
[3] Tianjin Key Lab. of Photoelectronic Thin Films Devices and Technology, Tianjin 300071, China
[4] College of Materials Science and Engineering, Nanchang University, Nanchang 330047, China
[5] Department of Materials, Beijing Normal University, Beijing 100871, China