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In the article number 1808059, Licheng Tan, Zhen Li, Yiwang Chen, and co‐workers introduce an AIE polymer (PTN‐Br) into a tin‐based perovskite film, which can form a gradient band alignment, passivate trap states, and enhance device performance as well as UV stability. The gradient band alignment of the FASnI3 film with a PEDOT:PSS hole‐transport layer ensures excellent hole transportation and higher...
High electronic quality perovskite films with a balanced charge transportation is critical for satisfying high‐performance for perovskite solar cells (PVSCs). However, the inferior band alignment of tin‐based perovskite films with an adjacent hole‐transport layer (HTL) leads to a poor hole transportation and collection. In this work, the semiconducting molecule poly[tetraphenylethene 3,3′‐(((2,2‐diphenylethene‐1,1‐diyl)bis(4,1‐phenylene))bis(oxy))bis(...
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