1. CAS Key Laboratory of Functional Materials and Devices for Special, EnvironmentsXinjiang Technical Institute of Physics and ChemistryChinese Academy of Sciences; Xinjiang Key Laboratory, of Electronic Information Materials and Devices 40-1 South Beijing Road Urumqi 830011 P. R. China
2. Center of Materials Science and Optoelectronics EngineeringUniversity of Chinese Academy of Sciences Beijing 100049 P. R. China