1. Institute
of Gem and Material Technology, Hebei GEO University, Huai’an
Road No. 136, Shijiazhuang 050000, Hebei, P.R. China
2. Key
Laboratory of Functional Materials and Devices under Special Environments, Chinese Academy of Sciences, Beijing South Road No. 40-1, Urumqi 830011, Xinjiang, P.R. China