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High-efficiency perovskite solar cells prepared by using a sandwich structure MAI-PbI2-MAI precursor film
Zhang, Xuhui1,2; Ye, Jiajiu1,2; Zhu, Liangzheng1,2; Zheng, Haiying1,2; Liu, Guozhen1,2; Liu, Xuepeng1,2; Duan, Bin1,2; Pan, Xu1; Dai, Songyuan3
2017-04-14
Source PublicationNANOSCALE
Volume9Issue:14Pages:4691-4699
AbstractTwo-step deposition has been widely used in the perovskite layer preparation for perovskite solar cells due to its attractive morphology controllability. However, the limited diffusivity of CH3NH3I (MAI) might cause some PbI2 to remain in the perovskite film. The residual PbI2 in the perovskite film would lead to inferior performance of devices, such as, low power conversion efficiency (PCE), poor reproducibility and weak air stability. In this work, we developed a sandwich structure MAI-PbI2-MAI precursor film to prepare a PbI2-free CH3NH3PbI3 perovskite film. In comparison to the two-step approach, the MAI-PbI2-MAI precursor film with a typical sandwich structure formed a uniform and pinhole-free perovskite film without any PbI2 residue, which could significantly improve the performance of the devices. Moreover, the bottom MAI layer of the MAI-PbI2-MAI precursor film could improve the interfacial contact of the porous TiO2 layer, leading to the promotion of the charge transfer and reduction of the recombination rate. Therefore, the devices fabricated from the sandwich structure MAI-PbI2-MAI precursor films showed dramatic improvements of open-circuit voltage (Voc), short-circuit current density (Jsc), fill factor (FF) and PCE. As a result, a promising PCE of 17.8% with good long-term air stability was achieved for the MAI-PbI2-MAI precursor film based PSC, which is better than that prepared by a two-step approach.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
Funding OrganizationNational High Technology Research and Development Program of China(2015AA050602) ; National Natural Science Foundation of China(21273242) ; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(LAPS14012) ; National High Technology Research and Development Program of China(2015AA050602) ; National Natural Science Foundation of China(21273242) ; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(LAPS14012)
DOI10.1039/c6nr07689k
WOS KeywordSEQUENTIAL DEPOSITION ; CHARGE-SEPARATION ; PERFORMANCE ; INTERFACE ; DYNAMICS ; PASSIVATION ; GROWTH
Indexed BySCI
Language英语
Funding OrganizationNational High Technology Research and Development Program of China(2015AA050602) ; National Natural Science Foundation of China(21273242) ; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(LAPS14012) ; National High Technology Research and Development Program of China(2015AA050602) ; National Natural Science Foundation of China(21273242) ; State Key Laboratory of Alternate Electrical Power System with Renewable Energy Sources(LAPS14012)
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS SubjectChemistry, Multidisciplinary ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Applied
WOS IDWOS:000398954800008
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Cited Times:19[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.hfcas.ac.cn:8080/handle/334002/32958
Collection应用技术研究所
Affiliation1.Chinese Acad Sci, Inst Appl Technol, Key Lab Novel Thin Film Solar Cells, Hefei 230031, Peoples R China
2.Univ Sci & Technol China, Hefei 230026, Peoples R China
3.North China Elect Power Univ, State Key Lab Alternate Elect Power Syst Renewabl, Beijing 102206, Peoples R China
Recommended Citation
GB/T 7714
Zhang, Xuhui,Ye, Jiajiu,Zhu, Liangzheng,et al. High-efficiency perovskite solar cells prepared by using a sandwich structure MAI-PbI2-MAI precursor film[J]. NANOSCALE,2017,9(14):4691-4699.
APA Zhang, Xuhui.,Ye, Jiajiu.,Zhu, Liangzheng.,Zheng, Haiying.,Liu, Guozhen.,...&Dai, Songyuan.(2017).High-efficiency perovskite solar cells prepared by using a sandwich structure MAI-PbI2-MAI precursor film.NANOSCALE,9(14),4691-4699.
MLA Zhang, Xuhui,et al."High-efficiency perovskite solar cells prepared by using a sandwich structure MAI-PbI2-MAI precursor film".NANOSCALE 9.14(2017):4691-4699.
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