Yurui Wang, Renxing Lin, Chenshuaiyu Liu, Xiaoyu Wang, Cullen Chosy, Yuki Haruta, Anh Dinh Bui, Minghui Li, Hongfei Sun, Xuntian Zheng, Haowen Luo, Pu Wu, Han Gao, Wenjie Sun, Yuefeng Nie, Hesheng Zhu, Kun Zhou, Hieu T. Nguyen, Xin Luo, Ludong Li, Chuanxiao Xiao, Makhsud I. Saidaminov, Samuel D. Stranks, Lijun Zhang, Hairen Tan
{"title":"Homogenized contact in all-perovskite tandems using tailored 2D perovskite","authors":"Yurui Wang, Renxing Lin, Chenshuaiyu Liu, Xiaoyu Wang, Cullen Chosy, Yuki Haruta, Anh Dinh Bui, Minghui Li, Hongfei Sun, Xuntian Zheng, Haowen Luo, Pu Wu, Han Gao, Wenjie Sun, Yuefeng Nie, Hesheng Zhu, Kun Zhou, Hieu T. Nguyen, Xin Luo, Ludong Li, Chuanxiao Xiao, Makhsud I. Saidaminov, Samuel D. Stranks, Lijun Zhang, Hairen Tan","doi":"10.1038/s41586-024-08158-6","DOIUrl":null,"url":null,"abstract":"<p>The fabrication of scalable all-perovskite tandem solar cells is considered an attractive route to commercialize perovskite photovoltaic modules<sup>1</sup>. However, The certified efficiency of 1-cm<sup>2</sup> scale all-perovskite tandem solar cells lags behind their small-area (~0.1 cm<sup>2</sup>) counterparts<sup>2,3</sup>. This performance deficit originates from inhomogeneity in wide-bandgap (WBG) perovskite solar cells (PSCs) at a large scale. The inhomogeneity is known to be introduced at the bottom interface and within the perovskite bulk itself<sup>4,5</sup>. Here we uncover another crucial source for the inhomogeneity – the top interface formed during the deposition of the electron transport layer (ETL, C<sub>60</sub>). Meanwhile, the poor ETL interface is also a significant limitation of device performance. We address this issue by introducing a mixture of 4-fluorophenethylamine (F-PEA) and 4-trifluoromethyl-phenylammonium (CF3-PA) to create a tailored two-dimensional perovskite layer (TTDL), in which F-PEA forms a two-dimensional perovskite at the surface reducing contact losses and inhomogeneity, CF3-PA enhances charge extraction and transport. As a result, we demonstrate a high open-circuit voltage of 1.35 V and an efficiency of 20.5% in 1.77-eV WBG PSCs at a square centimeter scale. By stacking with a narrow-bandgap perovskite sub-cell, we report 1.05 cm<sup>2</sup> all-perovskite tandem cells delivering 28.5% (certified 28.2%) efficiency, the highest among all reported so far. Our work showcases the importance of treating the top perovskite/ETL contact for upscaling perovskite solar cells.</p>","PeriodicalId":18787,"journal":{"name":"Nature","volume":null,"pages":null},"PeriodicalIF":50.5000,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nature","FirstCategoryId":"103","ListUrlMain":"https://doi.org/10.1038/s41586-024-08158-6","RegionNum":1,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MULTIDISCIPLINARY SCIENCES","Score":null,"Total":0}
引用次数: 0
Abstract
The fabrication of scalable all-perovskite tandem solar cells is considered an attractive route to commercialize perovskite photovoltaic modules1. However, The certified efficiency of 1-cm2 scale all-perovskite tandem solar cells lags behind their small-area (~0.1 cm2) counterparts2,3. This performance deficit originates from inhomogeneity in wide-bandgap (WBG) perovskite solar cells (PSCs) at a large scale. The inhomogeneity is known to be introduced at the bottom interface and within the perovskite bulk itself4,5. Here we uncover another crucial source for the inhomogeneity – the top interface formed during the deposition of the electron transport layer (ETL, C60). Meanwhile, the poor ETL interface is also a significant limitation of device performance. We address this issue by introducing a mixture of 4-fluorophenethylamine (F-PEA) and 4-trifluoromethyl-phenylammonium (CF3-PA) to create a tailored two-dimensional perovskite layer (TTDL), in which F-PEA forms a two-dimensional perovskite at the surface reducing contact losses and inhomogeneity, CF3-PA enhances charge extraction and transport. As a result, we demonstrate a high open-circuit voltage of 1.35 V and an efficiency of 20.5% in 1.77-eV WBG PSCs at a square centimeter scale. By stacking with a narrow-bandgap perovskite sub-cell, we report 1.05 cm2 all-perovskite tandem cells delivering 28.5% (certified 28.2%) efficiency, the highest among all reported so far. Our work showcases the importance of treating the top perovskite/ETL contact for upscaling perovskite solar cells.
期刊介绍:
Nature is a prestigious international journal that publishes peer-reviewed research in various scientific and technological fields. The selection of articles is based on criteria such as originality, importance, interdisciplinary relevance, timeliness, accessibility, elegance, and surprising conclusions. In addition to showcasing significant scientific advances, Nature delivers rapid, authoritative, insightful news, and interpretation of current and upcoming trends impacting science, scientists, and the broader public. The journal serves a dual purpose: firstly, to promptly share noteworthy scientific advances and foster discussions among scientists, and secondly, to ensure the swift dissemination of scientific results globally, emphasizing their significance for knowledge, culture, and daily life.