1. Key
Laboratory of Low-Dimensional Materials and Application Technologies
(Ministry of Education) and Faculty of Materials,
Optoelectronics and Physics, Xiangtan University, Hunan 411105, China
2. NOVITAS,
School of Electrical and Electronic Engineering, Nanyang Technological University, Singapore 639798
3. Center
for Coordination Bond and Electronic Engineering, College of Materials
Science and Engineering, China Jiliang University, Hangzhou 310018, China
4. State
Key Laboratory of New Ceramics and Fine Processing, Department of
Materials Science and Engineering, Tsinghua University, Beijing 100084, China
5. School
of Materials Science, Jilin University, Changchun 130012, China
6. Institute
of Atomic and Molecular Sciences, Academia Sinica, Taipei 10617, Taiwan
7. School
of Physics, Nanyang Technological University, Singapore 639798