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Fabrication of efficient formamidinium perovskite solar cells under ambient air via intermediate-modulated crystallization
Wang, Gaoxiang1,2; Wang, Lipeng1,2; Qiu, Jianhang1; Yan, Zheng3; Tai, Kaiping1; Yu, Wei4; Jiang, Xin1
Corresponding AuthorQiu, Jianhang(jhqiu@imr.ac.cn) ; Yu, Wei(yuwei@hbu.edu.cn) ; Jiang, Xin(xjiang@imr.ac.cn)
2019-07-15
Source PublicationSOLAR ENERGY
ISSN0038-092X
Volume187Pages:147-155
AbstractDeveloping simple methods to synthesize perovskite layers under ambient air can facilitate the industrial production of perovskite solar cells (PSCs). While limited progress has been made for the ambient-air fabrication of formamidinium lead triiodide perovskite (alpha-FAPbI(3)) layers due to the coexisting non-perovskite polymorph (delta-FAPbI(3)). Here, a facile N-methyl pyrrolidone (NMP) additive-based method is proposed to produce FA-perovskite (FAPbI(3)) layers in ambient air and smooth, highly-crystallized and delta-phase free perovskite films are produced under humidity of similar to 40%. The resultant PSC delivers a power conversion efficiency (PCE) of 17.29%, similar to 20% enhancement from that of PSC produced from traditional dimethyl sulfoxide (DSMO) additive. It is found that a distinct FAI center dot PbI2 center dot NMP intermediate phase forms during the film growth, providing an alternative crystallization process different to that of traditional delta-FAPbI(3) intermediate route. The fine nucleation of FAI center dot PbI2 center dot NMP intermediate contributes a smooth and dense morphology to the final film. The rapid detachment of NMP molecule from the intermediate enables a direct formation of alpha-FAPbI(3) film, averting the incomplete delta- to alpha- phase conversion under ambient air. Due to the high film quality, a PCE of 13.55% is still remained after 30-day storage for unencapsulated device, demonstrating the reliability of our method for FA-perovsklte ambient-air fabrication.
KeywordPerovskite solar cell Formamidinium Ambient-air fabrication Intermediate Crystallization
Funding OrganizationNational Nature Science Foundation of China ; Young Talent Program of Shenyang National Laboratory for Materials Science
DOI10.1016/j.solener.2019.05.033
Indexed BySCI
Language英语
Funding ProjectNational Nature Science Foundation of China[51402308] ; Young Talent Program of Shenyang National Laboratory for Materials Science[2017FP29]
WOS Research AreaEnergy & Fuels
WOS SubjectEnergy & Fuels
WOS IDWOS:000474327400014
PublisherPERGAMON-ELSEVIER SCIENCE LTD
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/134257
Collection中国科学院金属研究所
Corresponding AuthorQiu, Jianhang; Yu, Wei; Jiang, Xin
Affiliation1.Chinese Acad Sci, IMR, Shenyang Natl Lab Mat Sci SYNL, Shenyang 110016, Liaoning, Peoples R China
2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China
3.Shenyang Aerosp Univ, Coll Energy & Environm, Shenyang 110136, Liaoning, Peoples R China
4.Hebei Univ, Coll Phys Sci & Technol, Natl Local Joint Engn Lab New Energy Photoelect D, Hebei Key Lab Opt Elect Informat & Mat, Baoding 071002, Peoples R China
Recommended Citation
GB/T 7714
Wang, Gaoxiang,Wang, Lipeng,Qiu, Jianhang,et al. Fabrication of efficient formamidinium perovskite solar cells under ambient air via intermediate-modulated crystallization[J]. SOLAR ENERGY,2019,187:147-155.
APA Wang, Gaoxiang.,Wang, Lipeng.,Qiu, Jianhang.,Yan, Zheng.,Tai, Kaiping.,...&Jiang, Xin.(2019).Fabrication of efficient formamidinium perovskite solar cells under ambient air via intermediate-modulated crystallization.SOLAR ENERGY,187,147-155.
MLA Wang, Gaoxiang,et al."Fabrication of efficient formamidinium perovskite solar cells under ambient air via intermediate-modulated crystallization".SOLAR ENERGY 187(2019):147-155.
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