1. School of Micro and Nano Electronics ZJU‐Hangzhou Global Technological and Innovation Center Zhejiang University Hangzhou 310027 P. R. China
2. State Key Laboratory of Artificial Microstructure and Mesoscopic Physics Peking University Beijing 100071 P. R. China
3. Beijing Key Lab of Nanophotonics and Ultrafine Optoelectronic Systems Center for Micro‐Nanotechnology Key Lab of Advanced Optoelectronic Quantum Design and Measurement Ministry of Education School of Physics Beijing Institute of Technology Beijing 100081 P. R. China
4. Beijing Key Lab for Precision Optoelectronic Measurement Instrument and Technology School of Optics and Photonics Beijing Institute of Technology Beijing 100081 P. R. China
5. Department of Physics and Astronomy Sejong University Seoul 05006 South Korea
6. Department of Physics Laboratoire Sur l'Energie Solaire Université de Lomé Lomé 01BP1515 Togo