{"title":"抑制空穴积累的高效Sn-Pb钙钛矿太阳能电池","authors":"Haobo Yuan, Xiaodong Li, Wenxiao Zhang, Yuyang Hu, Jianhong Xu, Tengyi You, Qiang Weng, Yunjie Mao, Ting Shu, Junfeng Fang","doi":"10.1002/adma.202502680","DOIUrl":null,"url":null,"abstract":"<p>Sn-Pb perovskite solar cells (PSCs) own the highest theoretical efficiency due to their ideal bandgap. However, the efficiency of Sn-Pb PSCs remains 22–23% at present, which is much lower than Pb-based PSCs. One key reason lies in the Sn<sup>2+</sup> oxidation issue. Here, this study demonstrates that apart from well-known chemical environmental oxidation, photo-generated holes and their accumulation are also a critical factor for Sn<sup>2+</sup> oxidation in Sn-Pb PSCs. To address this issue, a non-planar hole transport layer (HTL) of P3CT/Me-4PACz is designed through solution micelle regulation. P3CT/Me-4PACz will form a 3D HTL film with a spike-like structure penetrating Sn-Pb perovskite bulk to accelerate hole extraction, thus inhibiting holes accumulation and Sn<sup>2+</sup> oxidation. Resulted Sn-Pb PSCs exhibit the highest efficiency of over 24% with good operational stability, retaining 82% of initial efficiency after continuous MPP tracking for 1000 h at an elevated temperature of 55 °C.</p>","PeriodicalId":114,"journal":{"name":"Advanced Materials","volume":"37 30","pages":""},"PeriodicalIF":26.8000,"publicationDate":"2025-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Efficient Sn-Pb Perovskite Solar Cells Through Inhibiting Hole Accumulation\",\"authors\":\"Haobo Yuan, Xiaodong Li, Wenxiao Zhang, Yuyang Hu, Jianhong Xu, Tengyi You, Qiang Weng, Yunjie Mao, Ting Shu, Junfeng Fang\",\"doi\":\"10.1002/adma.202502680\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Sn-Pb perovskite solar cells (PSCs) own the highest theoretical efficiency due to their ideal bandgap. However, the efficiency of Sn-Pb PSCs remains 22–23% at present, which is much lower than Pb-based PSCs. One key reason lies in the Sn<sup>2+</sup> oxidation issue. Here, this study demonstrates that apart from well-known chemical environmental oxidation, photo-generated holes and their accumulation are also a critical factor for Sn<sup>2+</sup> oxidation in Sn-Pb PSCs. To address this issue, a non-planar hole transport layer (HTL) of P3CT/Me-4PACz is designed through solution micelle regulation. P3CT/Me-4PACz will form a 3D HTL film with a spike-like structure penetrating Sn-Pb perovskite bulk to accelerate hole extraction, thus inhibiting holes accumulation and Sn<sup>2+</sup> oxidation. Resulted Sn-Pb PSCs exhibit the highest efficiency of over 24% with good operational stability, retaining 82% of initial efficiency after continuous MPP tracking for 1000 h at an elevated temperature of 55 °C.</p>\",\"PeriodicalId\":114,\"journal\":{\"name\":\"Advanced Materials\",\"volume\":\"37 30\",\"pages\":\"\"},\"PeriodicalIF\":26.8000,\"publicationDate\":\"2025-05-15\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/adma.202502680\",\"RegionNum\":1,\"RegionCategory\":\"材料科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"CHEMISTRY, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Advanced Materials","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/adma.202502680","RegionNum":1,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"CHEMISTRY, MULTIDISCIPLINARY","Score":null,"Total":0}
Efficient Sn-Pb Perovskite Solar Cells Through Inhibiting Hole Accumulation
Sn-Pb perovskite solar cells (PSCs) own the highest theoretical efficiency due to their ideal bandgap. However, the efficiency of Sn-Pb PSCs remains 22–23% at present, which is much lower than Pb-based PSCs. One key reason lies in the Sn2+ oxidation issue. Here, this study demonstrates that apart from well-known chemical environmental oxidation, photo-generated holes and their accumulation are also a critical factor for Sn2+ oxidation in Sn-Pb PSCs. To address this issue, a non-planar hole transport layer (HTL) of P3CT/Me-4PACz is designed through solution micelle regulation. P3CT/Me-4PACz will form a 3D HTL film with a spike-like structure penetrating Sn-Pb perovskite bulk to accelerate hole extraction, thus inhibiting holes accumulation and Sn2+ oxidation. Resulted Sn-Pb PSCs exhibit the highest efficiency of over 24% with good operational stability, retaining 82% of initial efficiency after continuous MPP tracking for 1000 h at an elevated temperature of 55 °C.
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Advanced Materials, one of the world's most prestigious journals and the foundation of the Advanced portfolio, is the home of choice for best-in-class materials science for more than 30 years. Following this fast-growing and interdisciplinary field, we are considering and publishing the most important discoveries on any and all materials from materials scientists, chemists, physicists, engineers as well as health and life scientists and bringing you the latest results and trends in modern materials-related research every week.
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