1. CAS
Key Lab of Materials for Energy Conversion, Department of Materials
Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026, China
2. Department
of Physics, Anhui Normal University, Wuhu, Anhui 241000, China
3. Department
of Chemistry, University of Nebraska—Lincoln, Lincoln, Nebraska 68588, United States
4. Synergetic Innovation Center of Quantum Information & Quantum Physics, University of Science and Technology of China, Hefei, Anhui 230026, China
5. Hefei
National Lab for Physical Sciences at the Microscale, University of Science and Technology of China, Hefei, Anhui 230026, China