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Engineering Interface Structure to Improve Efficiency and Stability of Organometal Halide Perovskite Solar Cells
https://oist.repo.nii.ac.jp/records/230
https://oist.repo.nii.ac.jp/records/230f6cfc450-084d-4ab3-8ee0-242fe7285fa1
名前 / ファイル | ライセンス | アクション |
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Composed Manuscript (3.8 MB)
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Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2018-01-18 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Engineering Interface Structure to Improve Efficiency and Stability of Organometal Halide Perovskite Solar Cells | |||||
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) |
Qiu, Longbin
× Qiu, Longbin× Ono, Luis K× Jiang, Yan× Leyden, Matthew R× Raga, Sonia R× Wang, Shenghao× Qi, Yabing |
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書誌情報 |
en : The Journal of Physical Chemistry B 巻 122, 号 2, p. 511-520, 発行日 2017-05-17 |
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抄録 | ||||||
内容記述タイプ | Other | |||||
内容記述 | The rapid rise of power conversion efficiency (PCE) of low cost organometal halide perovskite solar cells suggests that these cells are a promising alternative to conventional photovoltaic technology. However, anomalous hysteresis and unsatisfactory stability hinder the industrialization of perovskite solar cells. Interface engineering is of importance for the fabrication of highly stable and hysteresis free perovskite solar cells. Here we report that a surface modification of the widely used TiO2 compact layer can give insight into interface interaction in perovskite solar cells. A highest PCE of 18.5% is obtained using anatase TiO2, but the device is not stable and degrades rapidly. With an amorphous TiO2 compact layer, the devices show a prolonged lifetime but a lower PCE and more pronounced hysteresis. To achieve a high PCE and long lifetime simultaneously, an insulating polymer interface layer is deposited on top of TiO2. Three polymers, each with a different functional group (hydroxyl, amino, or aromatic group), are investigated to further understand the relation of interface structure and device PCE as well as stability. We show that it is necessary to consider not only the band alignment at the interface, but also interface chemical interactions between the thin interface layer and the perovskite film. The hydroxyl and amino groups interact with CH3NH3PbI3 leading to poor PCEs. In contrast, deposition of a thin layer of polymer consisting of an aromatic group to prevent the direct contact of TiO2 and CH3NH3PbI3 can significantly enhance the device stability, while the same time maintaining a high PCE. The fact that a polymer interface layer on top of TiO2 can enhance device stability, strongly suggests that the interface interaction between TiO2 and CH3NH3PbI3 plays a crucial role. Our work highlights the importance of interface structure and paves the way for further optimization of PCEs and stability of perovskite solar cells. | |||||
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 | 1520-5207 | |||||
ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 1520-6106 | |||||
PubMed番号 | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | PMID | |||||
関連識別子 | info:pmid/28514169 | |||||
DOI | ||||||
関連タイプ | isVersionOf | |||||
識別子タイプ | DOI | |||||
関連識別子 | info:doi/10.1021/acs.jpcb.7b03921 | |||||
権利 | ||||||
権利情報 | © 2017 American Chemical Society | |||||
情報源 | ||||||
関連名称 | This document is the Accepted Manuscript version of a Published Work that appeared in final form in [The journal of physical chemistry. B], copyright © American Chemical Society after peer review and technical editing by the publisher. | |||||
関連サイト | ||||||
識別子タイプ | URI | |||||
関連識別子 | http://pubs.acs.org/doi/abs/10.1021/acs.jpcb.7b03921 | |||||
著者版フラグ | ||||||
出版タイプ | AM | |||||
出版タイプResource | http://purl.org/coar/version/c_ab4af688f83e57aa |