Fabrication of efficient formamidinium perovskite solar cells under ambient air via intermediate-modulated crystallization

doi:10.1016/j.solener.2019.05.033

IMR OpenIR

	Fabrication of efficient formamidinium perovskite solar cells under ambient air via intermediate-modulated crystallization
	Wang, Gaoxiang 1,2; Wang, Lipeng 1,2; Qiu, Jianhang 1; Yan, Zheng 3; Tai, Kaiping 1; Yu, Wei 4; Jiang, Xin 1
通讯作者	Qiu, Jianhang(jhqiu@imr.ac.cn) ; Yu, Wei(yuwei@hbu.edu.cn) ; Jiang, Xin(xjiang@imr.ac.cn)
	2019-07-15
发表期刊	SOLAR ENERGY
ISSN	0038-092X
卷号	187 页码:147-155
摘要	Developing 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.
关键词	Perovskite solar cell Formamidinium Ambient-air fabrication Intermediate Crystallization
资助者	National Nature Science Foundation of China ; Young Talent Program of Shenyang National Laboratory for Materials Science
DOI	10.1016/j.solener.2019.05.033
收录类别	SCI
语种	英语
资助项目	National Nature Science Foundation of China[51402308] ; Young Talent Program of Shenyang National Laboratory for Materials Science[2017FP29]
WOS研究方向	Energy & Fuels
WOS类目	Energy & Fuels
WOS记录号	WOS:000474327400014
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：32[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/134255
专题	中国科学院金属研究所
通讯作者	Qiu, Jianhang; Yu, Wei; Jiang, Xin
作者单位	1.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
推荐引用方式 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.