{"title":"功能化二维/三维异质结与过氧化物太阳能电池中的可逆碘-烯反应","authors":"Hui Yang, Zhengbo Cui, Wen Li, Xuemin Guo, Chunyan Lu, Haobo Yuan, Yuyang Hu, Wenxiao Zhang, Xiaodong Li, Junfeng Fang","doi":"10.1002/adfm.202407828","DOIUrl":null,"url":null,"abstract":"<p>Long-term operational stability remains a big challenge for perovskite solar cells (PSCs), especially under ISOS protocol with high temperature. One key reason lies in the iodine loss issue during PSCs aging. Motived by the reversible iodine-alkenes reaction, 3-butenylamine (BEA) based 2D perovskite (BEA)<sub>2</sub>[PbBr<sub>4</sub>] is used to construct a functionalized 2D/3D heterojunction in PSCs. (BEA)<sub>2</sub>[PbBr<sub>4</sub>] can chemically adsorb photo-generated iodine species during perovskite degradation through a typical reaction between neutral iodine and terminal alkenes, thus inhibiting iodine loss or diffusion in PSCs. Besides, owing to the reversible reaction nature, these adsorbed iodine species can be partially released slowly under heat conditions, further reacting with and eliminating potential metallic Pb<sup>0</sup> defects. The resulting PSCs exhibit a high efficiency of 24.5% with good operational stability even without encapsulation, retaining ≈94% of initial efficiency after MPP tracking for 2000 h at 65 °C with ISOS-L-2 protocol.</p>","PeriodicalId":112,"journal":{"name":"Advanced Functional Materials","volume":"34 46","pages":""},"PeriodicalIF":19.0000,"publicationDate":"2024-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Functionalized 2D/3D Heterojunction with Reversible Iodine-Alkenes Reaction in Perovskite Solar Cells\",\"authors\":\"Hui Yang, Zhengbo Cui, Wen Li, Xuemin Guo, Chunyan Lu, Haobo Yuan, Yuyang Hu, Wenxiao Zhang, Xiaodong Li, Junfeng Fang\",\"doi\":\"10.1002/adfm.202407828\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Long-term operational stability remains a big challenge for perovskite solar cells (PSCs), especially under ISOS protocol with high temperature. One key reason lies in the iodine loss issue during PSCs aging. Motived by the reversible iodine-alkenes reaction, 3-butenylamine (BEA) based 2D perovskite (BEA)<sub>2</sub>[PbBr<sub>4</sub>] is used to construct a functionalized 2D/3D heterojunction in PSCs. (BEA)<sub>2</sub>[PbBr<sub>4</sub>] can chemically adsorb photo-generated iodine species during perovskite degradation through a typical reaction between neutral iodine and terminal alkenes, thus inhibiting iodine loss or diffusion in PSCs. Besides, owing to the reversible reaction nature, these adsorbed iodine species can be partially released slowly under heat conditions, further reacting with and eliminating potential metallic Pb<sup>0</sup> defects. The resulting PSCs exhibit a high efficiency of 24.5% with good operational stability even without encapsulation, retaining ≈94% of initial efficiency after MPP tracking for 2000 h at 65 °C with ISOS-L-2 protocol.</p>\",\"PeriodicalId\":112,\"journal\":{\"name\":\"Advanced Functional Materials\",\"volume\":\"34 46\",\"pages\":\"\"},\"PeriodicalIF\":19.0000,\"publicationDate\":\"2024-08-10\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Advanced Functional Materials\",\"FirstCategoryId\":\"88\",\"ListUrlMain\":\"https://onlinelibrary.wiley.com/doi/10.1002/adfm.202407828\",\"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 Functional Materials","FirstCategoryId":"88","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/adfm.202407828","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}
Functionalized 2D/3D Heterojunction with Reversible Iodine-Alkenes Reaction in Perovskite Solar Cells
Long-term operational stability remains a big challenge for perovskite solar cells (PSCs), especially under ISOS protocol with high temperature. One key reason lies in the iodine loss issue during PSCs aging. Motived by the reversible iodine-alkenes reaction, 3-butenylamine (BEA) based 2D perovskite (BEA)2[PbBr4] is used to construct a functionalized 2D/3D heterojunction in PSCs. (BEA)2[PbBr4] can chemically adsorb photo-generated iodine species during perovskite degradation through a typical reaction between neutral iodine and terminal alkenes, thus inhibiting iodine loss or diffusion in PSCs. Besides, owing to the reversible reaction nature, these adsorbed iodine species can be partially released slowly under heat conditions, further reacting with and eliminating potential metallic Pb0 defects. The resulting PSCs exhibit a high efficiency of 24.5% with good operational stability even without encapsulation, retaining ≈94% of initial efficiency after MPP tracking for 2000 h at 65 °C with ISOS-L-2 protocol.
期刊介绍：
Firmly established as a top-tier materials science journal, Advanced Functional Materials reports breakthrough research in all aspects of materials science, including nanotechnology, chemistry, physics, and biology every week.
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