Synergistic Enhancement of Stability and Performance for Perovskite Solar Cells Using Fluorinated Benzoic Acids as Additives

作     者：Chiu, Po-Hsun Hu, Cheng-Ti Chia, Swie-Kim Su, Li-Yun Chen, Po-Tuan Liu, Zhe-Yu Lin, Chao-Yun Hsieh, Chih-Chen Dai, Chi-An Wang, Leeyih 

作者机构：Department of Chemical Engineering National Taiwan University Taipei10617 Taiwan Center for Condensed Matter Sciences National Taiwan University Taipei10617 Taiwan Department of Chemical and Materials Engineering Southern Taiwan University of Science and Technology Tainan71005 Taiwan Department of Vehicle Engineering National Taipei University of Technology Taipei10608 Taiwan Department of Molecular Science and Engineering National Taipei University of Technology Taipei10608 Taiwan Center of Atomic Initiative for New Materials National Taiwan University Taipei10617 Taiwan 

出 版 物：《Solar RRL》 (Solar RRL)

年 卷 期：2024年第8卷第7期

核心收录：

基　　金：P.\u2010H.C., C.\u2010T.H. and S.\u2010K.C. contributed equally to this work. The authors gratefully thank the financial support from the National Science and Technology Council of Taiwan (NSTC 111\u20102113\u2010M\u2010002\u2010011 110\u20102221\u2010E\u2010002\u2010005\u2010MY3 112\u20102221\u2010E\u2010002\u2010202\u2010MY2 112\u20102222\u2010E\u2010218\u2010002), Academia Sinica (AS\u2010iMATE\u2010113\u201031), the Center of Atomic Initiative for New Materials of the National Taiwan University (grant nos. 113 L9008 and 111 668 L9008) from the Featured Areas Research Center Program 669 within the framework of the Higher Education Sprout Project 670 by the Ministry of Education of Taiwan, and National Synchrotron Radiation Research Center in Taiwan (Taiwan Photon Source 25A1 beam station and Taiwan Light Source 23A1,13A1, and 17A1 beam stations).P.-H.C., C.-T.H. and S.-K.C. contributed equally to this work. The authors gratefully thank the financial support from the National Science and Technology Council of Taiwan (NSTC 111-2113-M-002-011 110-2221-E-002-005-MY3 112-2221-E-002-202-MY2 112-2222-E-218-002), Academia Sinica (AS-iMATE-113-31), the Center of Atomic Initiative for New Materials of the National Taiwan University (grant nos. 113 L9008 and 111 668 L9008) from the Featured Areas Research Center Program 669 within the framework of the Higher Education Sprout Project 670 by the Ministry of Education of\u00A0Taiwan, and National Synchrotron Radiation Research Center in Taiwan (Taiwan Photon Source 25A1 beam station and Taiwan Light Source 23A1,13A1, and 17A1 beam stations) 

主　　题：Perovskite 

摘      要：The introduction of additives with specific functional groups is an important approach to extend the operational lifetime of perovskite solar cells (PSCs). Herein, the effect of the additives of benzoic acid (0F-B), 4-fluorobenzoic acid (1F-B), and 2,3,4,5,6-pentafluorobenzoic acid (5F-B) on the performance and stability of MAPbI3-based PSCs is systematically investigated. These additives can both chelate onto lead ions and form hydrogen bond with methyl ammonium ions. These combined interactions result in an increased activation energy for nucleation of perovskite crystals, thereby, increasing crystal size, reducing defect formation, improving electronic properties, as well as reducing ion migration. As a result, PSCs added with 5F-B achieve the highest power conversion efficiency (PCE) of 20.50% with a narrow distribution compared to those PSC devices added with 1F-B (19.25 %), 0F-B (18.80 %), and pristine devices (18.53 %). Notably, 5F-B-added PSCs retain 80% of their initial PCE after ≈100-day humidity test (at 25 °C and 50% relative humidity), 30-day thermal stability test (at 85 °C in nitrogen environment), and 12-day light illumination test (under continuous simulated solar radiation). © 2024 Wiley-VCH GmbH.