1. CAS Key Laboratory of Materials for Energy Conversion; Department of Materials Science and Engineering; University of Science and Technology of China; Hefei 230026 China
2. Synergetic Innovation Center of Quantum Information & Quantum Physics; University of Science and Technology of China; Hefei Anhui 230026 China
3. National Synchrotron Radiation Laboratory; University of Science and Technology of China; Hefei 230026 China