Ethylenediamine chlorides additive assisting formation of high-quality formamidinium-caesium perovskite film with low trap density for efficient solar cells

doi:10.1016/j.jpowsour.2019.227484

IOCAS-IR

	Ethylenediamine chlorides additive assisting formation of high-quality formamidinium-caesium perovskite film with low trap density for efficient solar cells
	Hou, Jie 1,2,3; Deng, Fei 1; Wu, Qibing 2; Yang, Lihui3 ; Wu, Jiaojiao 1; Li, Xitao 1; Zheng, Yan-Zhen 1; Li, Nan 1; Ding, Haiyang 4; Tao, Xia 1
	2020-02-15
发表期刊	JOURNAL OF POWER SOURCES
ISSN	0378-7753
卷号	449 页码:8
通讯作者	Zheng, Yan-Zhen(zhengyz@mail.buct.edu.cn) ; Tao, Xia(taoxia@yahoo.com)
摘要	Dual-cation formamidinium-caesium (FACs) perovskite shows good thermal stability, but a great number of trap states existing in the FACs perovskite film impair its photoelectric conversion efficiency and long-term stability. In this work, ethylenediamine chlorides (EDACl(2)), a new type Lewis base trap deactivator, is synthesized and then applied to the perovskite precursor solution to assist the formation of FACs perovskite film with less trap states. A series of photoelectric measurements reveal that the charge transport of FACs perovskite film, mediated by EDACl(2) additive, is promoted and the non-radiative recombination process is reduced as well. By optimizing the EDACl(2) additive amount and Br composition, the EDACl(2) -engineered perovskite solar cells (PSCs) with structures of ITO/SnO2/Cs(0.15)FA(0.85)PbI(2.7)Br(0.3)/Spiro-MeOTAD/Ag and ITO/SnO2/Cs(0.5)FA(0.85)PbI(2.7) Bro.3/carbon, achieve their respective champion efficiencies of 19.68% and 15.56%, along with negligible hysteresis. Particularly, the carbon-based FACs device with EDACl(2) exhibits good air-, thermal- and photostability. This work provides a facile and efficient ion additive engineering for fabrication of high-quality perovskite films and high-performance PSCs.
关键词	Perovskite solar cells Ethylenediamine chlorides Ion additive engineering Trap density
DOI	10.1016/j.jpowsour.2019.227484
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[21676017] ; Opening Project of State Key Laboratory of Advanced Chemical Power Sources[SKL-ACPS-C-27] ; Open Fund of Shandong Key Laboratory of Corrosion Science[KLCS201914] ; Opening Project of State Key Laboratory of Organic-Inorganic Composites
WOS研究方向	Chemistry ; Electrochemistry ; Energy & Fuels ; Materials Science
WOS类目	Chemistry, Physical ; Electrochemistry ; Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000510947000077
出版者	ELSEVIER
引用统计	被引频次：15[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/165362
专题	中国科学院海洋研究所
通讯作者	Zheng, Yan-Zhen; Tao, Xia
作者单位	1.Beijing Univ Chem Technol, State Key Lab Organ Inorgan Composites, Beijing 100029, Peoples R China 2.Guizhou Meiling Power Sources Co Ltd, State Key Lab Adv Chem Power Sources, Zunyi 563003, Guizhou, Peoples R China 3.Chinese Acad Sci, Inst Oceanol, Shandong Key Lab Corros Sci, Beijing, Peoples R China 4.Gen Res Inst Nonferrous Met, Beijing 100088, Peoples R China
第一作者单位	中国科学院海洋研究所
推荐引用方式 GB/T 7714	Hou, Jie,Deng, Fei,Wu, Qibing,et al. Ethylenediamine chlorides additive assisting formation of high-quality formamidinium-caesium perovskite film with low trap density for efficient solar cells[J]. JOURNAL OF POWER SOURCES,2020,449:8.
APA	Hou, Jie.,Deng, Fei.,Wu, Qibing.,Yang, Lihui.,Wu, Jiaojiao.,...&Tao, Xia.(2020).Ethylenediamine chlorides additive assisting formation of high-quality formamidinium-caesium perovskite film with low trap density for efficient solar cells.JOURNAL OF POWER SOURCES,449,8.
MLA	Hou, Jie,et al."Ethylenediamine chlorides additive assisting formation of high-quality formamidinium-caesium perovskite film with low trap density for efficient solar cells".JOURNAL OF POWER SOURCES 449(2020):8.

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