WEKO3
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Interfacial Modification of Perovskite Solar Cells Using an Ultrathin MAI Layer Leads to Enhanced Energy Level Alignment, Efficiencies, and Reproducibility
https://oist.repo.nii.ac.jp/records/838
https://oist.repo.nii.ac.jp/records/838d22e0e42-b0bf-4b6f-aaec-d6fec8d10ed5
名前 / ファイル | ライセンス | アクション |
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acs.jpclett.7b01508 (1.5 MB)
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ACS AuthorChoice
(https://pubs.acs.org/page/policy/authorchoice/index.html) |
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2019-03-28 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Interfacial Modification of Perovskite Solar Cells Using an Ultrathin MAI Layer Leads to Enhanced Energy Level Alignment, Efficiencies, and Reproducibility | |||||
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 | |||||
著者(英) |
Hawash, Zafer
× Hawash, Zafer× Raga, Sonia R.× Son, Dae-Yong× Ono, Luis K.× Park, Nam-Gyu× Qi, Yabing |
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書誌情報 |
en : The Journal of Physical Chemistry Letters 巻 8, 号 17, p. 3947-3953, 発行日 2017-08-02 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | For the first time, we intentionally deposit an ultrathin layer of excess methylammonium iodide (MAI) on top of a methylammonium lead iodide (MAPI) perovskite film. Using photoelectron spectroscopy, we investigate the role of excess MAI at the interface between perovskite and spiro-MeOTAD hole-transport layer in standard structure perovskite solar cells (PSCs). We found that interfacial, favorable, energy-level tuning of the MAPI film can be achieved by controlling the amount of excess MAI on top of the MAPI film. Our XPS results reveal that MAI dissociates at low thicknesses (<16 nm) when deposited on MAPbI3. It is not the MAI layer but the dissociated species that leads to the interfacial energy-level tuning. Optimized interface energetics were verified by solar cell device testing, leading to both an increase of 19% in average steady-state power conversion efficiency (PCE) and significantly improved reproducibility, which is represented by a much lower PCE standard deviation (from 15 +/- 2% to 17.2 +/- 0.4%) | |||||
出版者 | ||||||
出版者 | American Chemical Society | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1948-7185 | |||||
PubMed番号 | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | PMID | |||||
関連識別子 | info:pmid/28767259 | |||||
DOI | ||||||
関連タイプ | isIdenticalTo | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1021/acs.jpclett.7b01508 | |||||
権利 | ||||||
権利情報 | © 2017 American Chemical Society | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | https://pubs.acs.org/doi/10.1021/acs.jpclett.7b01508 | |||||
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 |