1. Institute of New Energy Technology College of Information Science and Technology Guangdong Engineering Research Center of Thin‐Film Photovoltaic Processes and Equipment and Key Laboratory of New Semiconductors and Devices of Guangdong Higher Education Institutes Jinan University Guangzhou 510632 China
2. Department of Materials Science and Engineering Southern University of Science and Technology Shenzhen Guangdong 518055 China
3. Institute for Advanced Materials and Guangdong Provincial Key Laboratory of Optical Information Materials and Technology South China Academy of Advanced Optoelectronics South China Normal University Guangzhou 510006 China