1. Physical Science and Engineering Division (PSE) King Abdullah University of Science and Technology (KAUST) Thuwal 23955–6900 Saudi Arabia
2. School of Materials and Energy and Electron Microscopy Centre of Lanzhou University Lanzhou University Lanzhou 730000 China
3. Core Labs King Abdullah University of Science and Technology (KAUST) Thuwal 23955–6900 Saudi Arabia
4. Core Technology Platforms New York University Abu Dhabi Abu Dhabi 129188 United Arab Emirates
5. Guangdong Provincial Key Laboratory of Optical Information Materials and Technology & Institute for Advanced Materials South China Academy of Advanced Optoelectronics South China Normal University Guangzhou 510006 China
6. National Center for International Research on Green Optoelectronics South China Normal University Guangzhou 510006 China
7. Physics Department Georgetown University Washington DC 20057 USA