1. College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China
2. BTR New Energy Materials Inc., Bao’an
District, Shenzhen 518106, China
3. School of Energy and Power Engineering, Beihang University, Beijing 100191, China
4. School of Physics, Beihang University, Beijing 100191, China
5. Division of Solid-State Electronics, Department of Electrical Engineering, Ångströmlaboratoriet, Uppsala University, Uppsala 75121, Sweden
6. Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province, College of Physics and Optoelectronic Engineering, Shenzhen University, Shenzhen 518060, China