文献类型：期刊文献

英文题名：Simultaneous Enhancement of Efficiency and Photostability in Wide-Bandgap Perovskite Solar Cells via Managing Residual PbI2 with a Phosphoramide Additive

作者：Wang, Songran[1]; Jin, Pengwei[1,2,4]; Ji, Xiaoyu[1,3]; Zhang, Shuo[1]; Wu, Yongzhen[1,2,4]

机构：[1] Key Laboratory for Advanced Materials, Joint International Research Laboratory of Precision Chemistry and Molecular Engineering, Shanghai Key Laboratory of Functional Materials Chemistry, Feringa Nobel Prize Scientist Joint Research Center, Institute of Fine Chemicals, Frontiers Science Center for Materiobiology and Dynamic Chemistry, School of Chemistry and Molecular Engineering, East China University of Science and Technology, Shanghai, 200237, China; [2] Guangxi Laboratory of Low-Carbon Technology, Guangxi, Qinzhou, 535008, China; [3] Petrochina Jinxi Petrochemical Company, Liaoning, Huludao, 125001, China; [4] Center of Photosensitive Chemicals Engineering, East China University of Science and Technology, Shanghai, 200237, China

年份：2026

卷号：9

期号：14

起止页码：9400

外文期刊名：ACS Applied Energy Materials

收录：EI(收录号：20263121192983);Scopus(收录号：2-s2.0-105045837338)

语种：英文

外文关键词：Additives - Chromium compounds - Conversion efficiency - Energy gap - Iodine compounds - Lead compounds - Maximum power point trackers - Open circuit voltage - Perovskite solar cells - Process control

摘要：In wide-bandgap perovskite solar cells (WBG-PSCs), the addition of excess lead salts in a perovskite precursor is a popular strategy for fabricating high-efficiency devices. The presence of lead iodide (PbI2) in perovskite films has been confirmed to enhance the device performance but introduces the intrinsic instability of perovskite under illumination due to its photodecomposition. In this work, we used tri(N,N-tetramethylene)phosphoramide (TPPA) as an additive to manage residual PbI2 in perovskite films, which regulates the crystallization process of mixed-halide perovskites, promotes the formation of high-quality perovskite films, and stabilizes the perovskite films under light irradiation. As a result, WBG-PSCs with a band gap of 1.76 eV achieved a high open-circuit voltage close to 1.34 V and power conversion efficiency (PCE) of 21.4%. Furthermore, the devices with TPPA retained 90% of the initial PCE after 750 h during the maximum power point tracking process, while the control devices only retained 90% of the initial PCE after 270 h. ? 2026 American Chemical Society