Recently, the research group led by Professor Ming Cheng from the Institution for Energy Research published the  article titled "Construction of Efficient Cs2AgBiBr6 Perovskite Solar Cells by Enhancing Hole-Selective Contact with Deep-Level Dopant-Free Hole Transport Material" in journal "Advanced Functional Materials" (DOI: 10.1002/adfm.202315428). Jiangsu University is listed as the primary affiliation for this paper. The doctoral student, Mengde Zhai, serves as the first author, and Professor Ming Cheng and Researcher Cheng Chen are the corresponding authors.