{"title":"Crystallization Improvement and Defect Passivation of CsPbI2Br Perovskite Solar Cells by Introducing Additive","authors":"Zhuowei Li, Qian Wang, Wenwen Liu, Hanxiao Gao, Yanyu Deng, Chunyu Liu* and Wenbin Guo*, ","doi":"10.1021/acsaem.5c0008410.1021/acsaem.5c00084","DOIUrl":null,"url":null,"abstract":"<p >The CsPbI<sub>2</sub>Br perovskite with a suitable bandgap demonstrates exceptional photothermal stability. Currently, the key factor for the commercialization of CsPbI<sub>2</sub>Br perovskite solar cells (PSCs) lies in enhancing their power conversion efficiency (PCE). In this study, we introduce a multifunctional additive of 4-chloroaniline (PCA) into n-i-p structured CsPbI<sub>2</sub>Br PSCs. After annealing, the crystallinity of the perovskite layer doped with PCA was significantly enhanced. Additionally, PCA existing in the perovskite layer effectively passivates defects through chemical coordination between amine and Pb<sup>2+</sup>, thereby further improving the device performance. Through effective management of crystallization and defect passivation, we observe a substantial increase in PCE from 13.44% to 16.15%. This research provides valuable insights for selecting efficient additives for inorganic PSCs.</p>","PeriodicalId":4,"journal":{"name":"ACS Applied Energy Materials","volume":"8 5","pages":"3193–3197 3193–3197"},"PeriodicalIF":5.4000,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Applied Energy Materials","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsaem.5c00084","RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The CsPbI2Br perovskite with a suitable bandgap demonstrates exceptional photothermal stability. Currently, the key factor for the commercialization of CsPbI2Br perovskite solar cells (PSCs) lies in enhancing their power conversion efficiency (PCE). In this study, we introduce a multifunctional additive of 4-chloroaniline (PCA) into n-i-p structured CsPbI2Br PSCs. After annealing, the crystallinity of the perovskite layer doped with PCA was significantly enhanced. Additionally, PCA existing in the perovskite layer effectively passivates defects through chemical coordination between amine and Pb2+, thereby further improving the device performance. Through effective management of crystallization and defect passivation, we observe a substantial increase in PCE from 13.44% to 16.15%. This research provides valuable insights for selecting efficient additives for inorganic PSCs.
期刊介绍：
ACS Applied Energy Materials is an interdisciplinary journal publishing original research covering all aspects of materials, engineering, chemistry, physics and biology relevant to energy conversion and storage. The journal is devoted to reports of new and original experimental and theoretical research of an applied nature that integrate knowledge in the areas of materials, engineering, physics, bioscience, and chemistry into important energy applications.
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