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Growth control of compact CH3NH3PbI3 thin films via enhanced solid-state precursor reaction for efficient planar perovskite solar cells
Zhou, Yuanyuan1; Yang, Mengjin2; Vasiliev, Alexander L.1; Garces, Hector F.1; Zhao, Yixin3; Wang, Dong4; Pang, Shuping4; Zhu, Kai2; Padture, Nitin P.1
2015
发表期刊Journal of Materials Chemistry A
卷号3期号:17页码:9249-9256
摘要CH3NH3PbI3 (MAPbI(3)) perovskite thin films that are solution-processed using either a one-step or two-step conventional method typically contain a significant number of defects (voids, pinholes) or PbI2 impurities, which have a detrimental effect on the performance of planar perovskite solar cells (PSCs) fabricated using those films. To overcome this issue, we show that enhancement of the solid-state reaction between inorganic-organic precursors is an effective route for the growth of compact, phase-pure MAPbI(3) perovskite thin films with no voids or pinholes. To ensure uniform solid-state conversion (MAI + PbI2 -> MAPbI(3)) across the entire film thickness, a new successive spin coating/annealing (SSCA) process is used, where MAI is repeatedly infiltrated into a nanoporous PbI2 film, followed by thermal annealing. The mechanisms involved in the SSCA process are elucidated by monitoring the evolution of the phases during the reaction. Owing to these desirable characteristics (high-purity, full-coverage, enhanced smoothness and compactness) of the SSCA MAPbI(3) films, planar PSCs based on these perovskite thin films delivered a maximum power conversion efficiency (PCE) close to 15%. Furthermore, PSCs fabricated using partially converted nanoporous PbI2 thin films delivered a surprising PCE approaching 10%, suggesting continuous MAPbI(3) phase formation throughout the entire film at each spin coating/annealing process. The advantages gained from enhancing the solid-state precursor reactions allow better control of the growth of the perovskite making the SSCA process more robust.
文章类型Article
WOS标题词Science & Technology ; Physical Sciences ; Technology
DOI10.1039/c4ta07036d
关键词[WOS]VAPOR-DEPOSITION ; HOLE-CONDUCTOR ; HETEROJUNCTION ; IODIDE ; CHEMISTRY ; LENGTHS ; LIGHT
收录类别SCI
语种英语
WOS研究方向Chemistry ; Energy & Fuels ; Materials Science
WOS类目Chemistry, Physical ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号WOS:000353420800042
引用统计
文献类型期刊论文
条目标识符http://ir.qibebt.ac.cn/handle/337004/6439
专题仿生与固态能源系统研究组
作者单位1.Brown Univ, Sch Engn, Providence, RI 02912 USA
2.Natl Renewable Energy Lab, Chem & Mat Sci Ctr, Golden, CO 80401 USA
3.Shanghai Jiao Tong Univ, Sch Environm Sci & Engn, Shanghai 200240, Peoples R China
4.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, Qingdao 266101, Peoples R China
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Zhou, Yuanyuan,Yang, Mengjin,Vasiliev, Alexander L.,et al. Growth control of compact CH3NH3PbI3 thin films via enhanced solid-state precursor reaction for efficient planar perovskite solar cells[J]. Journal of Materials Chemistry A,2015,3(17):9249-9256.
APA Zhou, Yuanyuan.,Yang, Mengjin.,Vasiliev, Alexander L..,Garces, Hector F..,Zhao, Yixin.,...&Padture, Nitin P..(2015).Growth control of compact CH3NH3PbI3 thin films via enhanced solid-state precursor reaction for efficient planar perovskite solar cells.Journal of Materials Chemistry A,3(17),9249-9256.
MLA Zhou, Yuanyuan,et al."Growth control of compact CH3NH3PbI3 thin films via enhanced solid-state precursor reaction for efficient planar perovskite solar cells".Journal of Materials Chemistry A 3.17(2015):9249-9256.
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