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DOI | 10.1038/s41467-019-08616-0 |
2D perovskite stabilized phase-pure formamidinium perovskite solar cells | |
Lee, Jin-Wook1,2; Dai, Zhenghong1,2; Han, Tae-Hee1,2; Choi, Chungseok1,2; Chang, Sheng-Yung1,2; Lee, Sung-Joon1,2; De Marco, Nicholas1,2; Zhao, Hongxiang1,2; Sun, Pengyu1,2; Huang, Yu1,2; Yang, Yang1,2 | |
2019-02-22 | |
发表期刊 | NATURE COMMUNICATIONS
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ISSN | 2041-1723 |
出版年 | 2018 |
卷号 | 9 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Compositional engineering has been used to overcome difficulties in fabricating high-quality phase-pure formamidinium perovskite films together with its ambient instability. However, this comes alongside an undesirable increase in bandgap that sacrifices the device photo-current. Here we report the fabrication of phase-pure formamidinium-lead tri-iodide perovskite films with excellent optoelectronic quality and stability. Incorporation of 1.67 mol% of 2D phenylethylammonium lead iodide into the precursor solution enables the formation of phase-pure formamidinium perovskite with an order of magnitude enhanced photoluminescence lifetime. The 2D perovskite spontaneously forms at grain boundaries to protect the formamidinium perovskite from moisture and suppress ion migration. A stabilized power conversion efficiency (PCE) of 20.64% (certified stabilized PCE of 19.77%) is achieved with a short-circuit current density exceeding 24 mA cm(-2) and an open-circuit voltage of 1.130 V, corresponding to a loss-in-potential of 0.35 V, and significantly enhanced operational stability. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000440413800003 |
WOS关键词 | ORGANOMETAL HALIDE PEROVSKITES ; HIGH-EFFICIENCY ; PHOTOVOLTAIC CELLS ; PERFORMANCE ; PASSIVATION ; HC(NH2)(2)PBI3 ; MIGRATION ; CATIONS ; GROWTH ; LAYERS |
WOS类目 | Multidisciplinary Sciences |
WOS研究方向 | Science & Technology - Other Topics |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/204236 |
专题 | 资源环境科学 |
作者单位 | 1.Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA 90095 USA; 2.Univ Calif Los Angeles, Calif NanoSyst Inst, Los Angeles, CA 90095 USA |
推荐引用方式 GB/T 7714 | Lee, Jin-Wook,Dai, Zhenghong,Han, Tae-Hee,et al. 2D perovskite stabilized phase-pure formamidinium perovskite solar cells[J]. NATURE COMMUNICATIONS,2019,9. |
APA | Lee, Jin-Wook.,Dai, Zhenghong.,Han, Tae-Hee.,Choi, Chungseok.,Chang, Sheng-Yung.,...&Yang, Yang.(2019).2D perovskite stabilized phase-pure formamidinium perovskite solar cells.NATURE COMMUNICATIONS,9. |
MLA | Lee, Jin-Wook,et al."2D perovskite stabilized phase-pure formamidinium perovskite solar cells".NATURE COMMUNICATIONS 9(2019). |
条目包含的文件 | 条目无相关文件。 |
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