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Perovskite solar cells prepared by a new 3-step method including a PbI 2 scavenging step
http://hdl.handle.net/2241/00148652
http://hdl.handle.net/2241/00148652c257191e-d322-4d4a-aebc-8bf9734ffe27
名前 / ファイル | ライセンス | アクション |
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MSSP_71 (2.0 MB)
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Item type | Journal Article(1) | |||||
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公開日 | 2017-11-09 | |||||
タイトル | ||||||
タイトル | Perovskite solar cells prepared by a new 3-step method including a PbI 2 scavenging step | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源 | http://purl.org/coar/resource_type/c_6501 | |||||
タイプ | journal article | |||||
著者 |
Okamoto, Yuji
× Okamoto, Yuji× Suzuki, Yoshikazu |
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著者別名 |
鈴木, 義和
× 鈴木, 義和 |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | CH3NH3PbI3 films prepared by the 2-step method for perovskite solar cells generally have problems of residual unreacted PbI2 and rough surface structure. Here, we report a new 3-step method, based on the 2-step method with an additional spin-coating of CH3NH3(I,Br) solution on the CH3NH3PbI3 film to scavenge remnant PbI2. The 3-step method improved light absorption of the film by converting the residual PbI2 into CH3NH3PbI3−xBrx. Morphological improvements such as a network formation among perovskite grains and a decrease of intergranular voids were also observed. The additional CH3NH3I spin-coating resulted in the increases of both JSC and VOC, while that of CH3NH3Br solution showed a slight decrease of JSC and large increase of VOC due to the enlarged bandgaps. The maximum power conversion efficiency was improved from 12.9% (2-step) to 14.4% (3-step). Furthermore, the 3-step cells retained ~ 85% of the original PCE values after storing in air for 700 h, which indicates an improved stability. | |||||
書誌情報 |
Materials science in semiconductor processing 巻 71, p. 1-6, 発行日 2017-11 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 13698001 | |||||
書誌レコードID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA11538036 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | 10.1016/j.mssp.2017.06.049 | |||||
権利 | ||||||
権利情報 | © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/ | |||||
著者版フラグ | ||||||
値 | author | |||||
出版者 | ||||||
出版者 | Elsevier |