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Unraveling the varied nature and roles of defects in hybrid halide perovskites with time-resolved photoemission electron microscopy
https://oist.repo.nii.ac.jp/records/2530
https://oist.repo.nii.ac.jp/records/253066daead3-2586-4d65-8090-e7d9285f6465
名前 / ファイル | ライセンス | アクション |
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d1ee02055b (5.9 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-01-25 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Unraveling the varied nature and roles of defects in hybrid halide perovskites with time-resolved photoemission electron microscopy | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | journal article | |||||
アクセス権 | ||||||
アクセス権 | open access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_abf2 | |||||
著者(英) |
Kosar, Sofiia
× Kosar, Sofiia× Winchester, Andrew J.× Doherty, Tiarnan A. S.× Macpherson, Stuart× Petoukhoff, Christopher E.× Frohna, Kyle× Anaya, Miguel× Chan, Nicholas S.× Madéo, Julien× Man, Michael K. L.× Stranks, Samuel D.× Dani, Keshav M. |
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書誌情報 |
en : Energy & Environmental Science 巻 14, 号 12, p. 6320-6328, 発行日 2021-09-15 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | With rapidly growing photoconversion efficiencies, hybrid perovskite solar cells have emerged as promising contenders for next generation, low-cost photovoltaic technologies. Yet, the presence of nanoscale defect clusters, that form during the fabrication process, remains critical to overall device operation, including efficiency and long-term stability. To successfully deploy hybrid perovskites, we must understand the nature of the different types of defects, assess their potentially varied roles in device performance, and understand how they respond to passivation strategies. Here, by correlating photoemission and synchrotron-based scanning probe X-ray microscopies, we unveil three different types of defect clusters in state-of-the-art triple cation mixed halide perovskite thin films. Incorporating ultrafast time-resolution into our photoemission measurements, we show that defect clusters originating at grain boundaries are the most detrimental for photocarrier trapping, while lead iodide defect clusters are relatively benign. Hexagonal polytype defect clusters are only mildly detrimental individually, but can have a significant impact overall if abundant in occurrence. We also show that passivating defects with oxygen in the presence of light, a previously used approach to improve efficiency, has a varied impact on the different types of defects. Even with just mild oxygen treatment, the grain boundary defects are completely healed, while the lead iodide defects begin to show signs of chemical alteration. Our findings highlight the need for multi-pronged strategies tailored to selectively address the detrimental impact of the different defect types in hybrid perovskite solar cells. | |||||
言語 | en | |||||
出版者 | ||||||
出版者 | The Royal Society of Chemistry | |||||
ISSN | ||||||
収録物識別子タイプ | PISSN | |||||
収録物識別子 | 1754-5692 | |||||
ISSN | ||||||
収録物識別子タイプ | EISSN | |||||
収録物識別子 | 1754-5706 | |||||
PubMed番号 | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | PMID | |||||
関連識別子 | 35003331 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1039/D1EE02055B | |||||
権利 | ||||||
権利情報 | © 2021 The Royal Society of Chemistry. | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://pubs.rsc.org/en/content/articlelanding/2021/EE/D1EE02055B | |||||
著者版フラグ | ||||||
出版タイプ | VoR | |||||
出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 |