Regulating microstructure of organic ammonium cations enables interface defect management and stability improvement in 2D/3D perovskite solar cells

doi:10.1016/j.apsusc.2022.155450

	Regulating microstructure of organic ammonium cations enables interface defect management and stability improvement in 2D/3D perovskite solar cells
	Zheng, Haiying 1; Dong, Xinhe 1; Wu, Weiwei 1; Wang, Chao 1; Pan, Xu 2; Liu, Guozhen 2
刊名	APPLIED SURFACE SCIENCE
	2023-02-01
卷号	610
关键词	Quaternary ammonium cations Microstructure Defect passivation 2D 3D perovskite solar cells Photovoltaic performance
ISSN号	0169-4332
DOI	10.1016/j.apsusc.2022.155450
通讯作者	Zheng, Haiying(hyzheng@ahu.edu.cn)
英文摘要	Two-dimensional (2D) perovskites with tunable spacer cations show considerable photoelectric properties and thus make great application prospect for 2D/3D heterojunction perovskite solar cells (PSCs). Herein, three quaternary ammonium cations (tetraethylammonium, tetrapropylammonium and tetrabutylammonium) with specific microstructure are employed to modify perovskite/hole transport layer interface. The influence of cation configuration on the crystallization, defect density and carrier transport of the 2D/3D films has been system-atically studied. Owing to strong ionic interactions with peovskite crystal terminal, stable 2D perovskite barriers will be formed to block the migration channel of water molecules in air and organic ions in perovskite, leading to the improved stability of PSCs. More importantly, both the positive and negative defects could be effectively passivated attributing to the surfactant and amphoteric properties of quaternary ammonium cations. As a result, the optimal perovskite device modified by tetrabutylammonium shows the best power conversion efficiency (PCE) of 21.92 % with high Voc of 1.17 V and superior humidity and thermal resistance. Our work provides a simple and effective strategy to stabilize the interface in PSCs and verifies the role of cation microstructure in modulating the properties of 2D perovskite.
资助项目	National Natural Science Foundation of China ; Natural Science Foundation of Anhui Province ; China Postdoctoral Science Foundation ; [52102196] ; [2008085QE208] ; [2108085QE190] ; [2021M693213]
WOS研究方向	Chemistry ; Materials Science ; Physics
语种	英语
出版者	ELSEVIER
WOS记录号	WOS:000881850400001
资助机构	National Natural Science Foundation of China ; Natural Science Foundation of Anhui Province ; China Postdoctoral Science Foundation
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/130287]
专题	中国科学院合肥物质科学研究院
通讯作者	Zheng, Haiying
作者单位	1.Anhui Univ Hefei, Inst Phys Sci & Informat Technol, Hefei 230601, Peoples R China 2.Chinese Acad Sci, Inst Solid State Phys, Hefei Inst Phys Sci, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Haiying,Dong, Xinhe,Wu, Weiwei,et al. Regulating microstructure of organic ammonium cations enables interface defect management and stability improvement in 2D/3D perovskite solar cells[J]. APPLIED SURFACE SCIENCE,2023,610.
APA	Zheng, Haiying,Dong, Xinhe,Wu, Weiwei,Wang, Chao,Pan, Xu,&Liu, Guozhen.(2023).Regulating microstructure of organic ammonium cations enables interface defect management and stability improvement in 2D/3D perovskite solar cells.APPLIED SURFACE SCIENCE,610.
MLA	Zheng, Haiying,et al."Regulating microstructure of organic ammonium cations enables interface defect management and stability improvement in 2D/3D perovskite solar cells".APPLIED SURFACE SCIENCE 610(2023).