Institute for Energy Research;
School of Energy and Power Engineering;
Jiangsu University;
Zhenjiang;
212013;
China;
Center of Artificial Photosynthesis for Solar Fuels and Department of Chemistry;
School of Science;
Westlake University;
Hangzhou;
310024;
China;
All-inorganic Cs_(2)AgBiBr_(6)perovskite; Stepped energy level structure; Energy loss; Moisture resistance;