{"title":"Regulation of Buried Interface through the Rapid Removal of PbI2·DMSO Complex for Enhancing Light Stability of Perovskite Solar Cells","authors":"Xing Zhao, Yujie Qiu, Min Wang, Danxia Wu, Xiaopeng Yue, Huilin Yan, Bingbing Fan, Shuxian Du, Yuqing Yang, Yingying Yang, Danni Li, Peng Cui, Hao Huang, Yingfeng Li, Nam-Gyu Park* and Meicheng Li*, ","doi":"10.1021/acsenergylett.4c00386","DOIUrl":null,"url":null,"abstract":"<p >The presence of the detrimental PbI<sub>2</sub> residue at the buried interface negatively affects the photovoltaic performance of perovskite solar cells (PSCs). However, the underlying mechanism involved in the formation and elimination of residual PbI<sub>2</sub> has been rarely investigated, despite its critical significance for high-efficiency and stable PSCs. Here, we investigated the formation and elimination mechanism of residual PbI<sub>2</sub> at the buried interface influenced by citric acid (CA) and found that CA can quickly remove the PbI<sub>2</sub>·DMSO complex through a competitive adsorption mechanism by forming highly crystallized PbI<sub>2</sub>. This promotes the subsequent intercalation of amine cations into the PbI<sub>2</sub> framework by forming a stable perovskite. Consequently, the best-performing target PSC achieves an efficiency of 25.19% (a certified efficiency of 24.64%) and 23% from a 1 cm<sup>2</sup> PSC. Additionally, the target PSC also demonstrates improved light stability after 200 h of UV light soaking by maintaining 94.21% of its initial efficiency compared with only 70.76% for the control PSC.</p>","PeriodicalId":16,"journal":{"name":"ACS Energy Letters ","volume":null,"pages":null},"PeriodicalIF":19.3000,"publicationDate":"2024-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"ACS Energy Letters ","FirstCategoryId":"88","ListUrlMain":"https://pubs.acs.org/doi/10.1021/acsenergylett.4c00386","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, PHYSICAL","Score":null,"Total":0}
引用次数: 0
Abstract
The presence of the detrimental PbI2 residue at the buried interface negatively affects the photovoltaic performance of perovskite solar cells (PSCs). However, the underlying mechanism involved in the formation and elimination of residual PbI2 has been rarely investigated, despite its critical significance for high-efficiency and stable PSCs. Here, we investigated the formation and elimination mechanism of residual PbI2 at the buried interface influenced by citric acid (CA) and found that CA can quickly remove the PbI2·DMSO complex through a competitive adsorption mechanism by forming highly crystallized PbI2. This promotes the subsequent intercalation of amine cations into the PbI2 framework by forming a stable perovskite. Consequently, the best-performing target PSC achieves an efficiency of 25.19% (a certified efficiency of 24.64%) and 23% from a 1 cm2 PSC. Additionally, the target PSC also demonstrates improved light stability after 200 h of UV light soaking by maintaining 94.21% of its initial efficiency compared with only 70.76% for the control PSC.
ACS Energy Letters Energy-Renewable Energy, Sustainability and the Environment
CiteScore
31.20
自引率
5.00%
发文量
469
审稿时长
1 months
期刊介绍:
ACS Energy Letters is a monthly journal that publishes papers reporting new scientific advances in energy research. The journal focuses on topics that are of interest to scientists working in the fundamental and applied sciences. Rapid publication is a central criterion for acceptance, and the journal is known for its quick publication times, with an average of 4-6 weeks from submission to web publication in As Soon As Publishable format.
ACS Energy Letters is ranked as the number one journal in the Web of Science Electrochemistry category. It also ranks within the top 10 journals for Physical Chemistry, Energy & Fuels, and Nanoscience & Nanotechnology.
The journal offers several types of articles, including Letters, Energy Express, Perspectives, Reviews, Editorials, Viewpoints and Energy Focus. Additionally, authors have the option to submit videos that summarize or support the information presented in a Perspective or Review article, which can be highlighted on the journal's website. ACS Energy Letters is abstracted and indexed in Chemical Abstracts Service/SciFinder, EBSCO-summon, PubMed, Web of Science, Scopus and Portico.