A facile way to prepare nanoporous PbI2 films and their application in fast conversion to CH3NH3PbI3 | |
Zheng, Huifeng1; Wang, Weiqi1; Yang, Songwang2; Liu, Yangqiao1; Sun, Jing1 | |
刊名 | RSC ADVANCES |
2016 | |
卷号 | 6期号:2页码:1611-1617 |
英文摘要 | In this report, we demonstrate a facile way to prepare PbI2 films with interpenetrating nanopores. The nanoporous PbI2 (n-PbI2) films were prepared by the solvent-solvent extraction (SSE) method, in which the DMF solvent was effectively extracted by isopropanol (IPA) within seconds, resulting in well-crystallized n-PbI2 films without annealing. The mechanism involved in the preparation of n-PbI2 films using the SSE method was studied further, and some universal rules for fabricating n-PbI2 films with the SSE method were proposed. The interpenetrating nanoporous morphology enabled fast penetration of the CH3NH3I (MAI) solution, so most of the PbI2 converted into CH3NH3PbI3 within 10 s even with a perovskite overlayer of 300 nm. Moreover, the perovskite layer was pinhole-free and smoother than that based on a conventional PbI2 film. Consequently, perovskite solar cells based on n-PbI2, with the setup as FTO/compact TiO2/bilayer CH3NH3PbI3/P3HT/Ag, delivered an impressive power conversion efficiency of 10.1%, compared with 5.9% for its counterpart based on a conventional compact PbI2 film. This work unveils the PbI2-morphology-related reaction kinetics in the two-step method, and will contribute to understanding the role PbI2 films play in the preparation of perovskites. |
WOS标题词 | Science & Technology ; Physical Sciences |
类目[WOS] | Chemistry, Multidisciplinary |
研究领域[WOS] | Chemistry |
关键词[WOS] | PEROVSKITE SOLAR-CELLS ; SEQUENTIAL DEPOSITION ; HALIDE PEROVSKITES ; 2-STEP DEPOSITION ; THIN-FILM ; EFFICIENT ; PERFORMANCE ; TRANSPORT ; TRIHALIDE ; THICKNESS |
收录类别 | SCI |
语种 | 英语 |
WOS记录号 | WOS:000367953200091 |
内容类型 | 期刊论文 |
源URL | [http://ir.sic.ac.cn/handle/331005/23287] |
专题 | 上海硅酸盐研究所_高性能陶瓷和超微结构国家重点实验室_期刊论文 |
作者单位 | 1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Ceram, CAS Key Lab Mat Energy Convers, Shanghai 201899, Peoples R China |
推荐引用方式 GB/T 7714 | Zheng, Huifeng,Wang, Weiqi,Yang, Songwang,et al. A facile way to prepare nanoporous PbI2 films and their application in fast conversion to CH3NH3PbI3[J]. RSC ADVANCES,2016,6(2):1611-1617. |
APA | Zheng, Huifeng,Wang, Weiqi,Yang, Songwang,Liu, Yangqiao,&Sun, Jing.(2016).A facile way to prepare nanoporous PbI2 films and their application in fast conversion to CH3NH3PbI3.RSC ADVANCES,6(2),1611-1617. |
MLA | Zheng, Huifeng,et al."A facile way to prepare nanoporous PbI2 films and their application in fast conversion to CH3NH3PbI3".RSC ADVANCES 6.2(2016):1611-1617. |
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