Multifunctional Heterocyclic-Based Spacer Cation for Efficient and Stable 2D/3D Perovskite Solar Cells

doi:10.1021/acsami.1c23991

	Multifunctional Heterocyclic-Based Spacer Cation for Efficient and Stable 2D/3D Perovskite Solar Cells
	Zheng, Haiying 1; Dong, Xinhe 1; Wu, Weiwei 1; Liu, Guozhen 2; Pan, Xu 2
刊名	ACS APPLIED MATERIALS & INTERFACES
	2022-02-11
关键词	2D/3D perovskite solar cells multifunctional spacer cation high film quality passivation effect photovoltaic performance
ISSN号	1944-8244
DOI	10.1021/acsami.1c23991
通讯作者	Zheng, Haiying(hyzheng@ahu.edu.cn) ; Pan, Xu(xpan@rntek.cas.cn)
英文摘要	Two-dimensional/three-dimensional (2D/3D) Ruddlesden-Pop-per perovskite materials have shown the enormous potential to achieve both efficient and stable photovoltaic devices for commercial applications. Unfortunately, the single function of spacer cations limits their further improvements in efficiency to reach values as high as those of 3D perovskites. Herein, we developed a new-type multifunctional heterocyclic-based spacer cation of 2(methylthio)-4,5-dihydro-1H-imidazole (MTIm(+)) to achieve a synchronous improvement of efficiency and stability for 2D/3D perovskite solar cells (PSCs). Owing to the presence of special chemical groups (imidazole and methylthio), strong interactions have been found between MTIm(+) and the 3D perovskite component, leading to an excellent passivation effect. More important, at the initial stage of crystallization, uniform nucleation distribution would be generated around the spacer cation, which is helpful for improved crystallinity and reduced growth defects. The smaller layer space compared to that of cations based on aromatic hydrocarbons caused effective carrier transfer between inorganic layers in 2D/3D perovskites. As a result, the 2D/3D (n = 30) PSCs based on MTIm exhibit a champion PCE up to 21.25% with a high V-oc of 1.14 V. Besides, the 2D/3D perovskite devices have realized dramatically enhanced humidity and thermal stability, maintaining 94% of the starting PCE enduring aging at about 50% RH for 2880 h and at 85 degrees C for 360 h, respectively. We believe that it would provide a significant strategy to further promote the photovoltaic performances and the long-term stability of 2D/3D perovskite devices toward future practical applications.
资助项目	National Natural Science Foundation of China[52102196] ; Natural Science Foundation of Anhui Province[2008085QE208] ; China Postdoctoral Science Foundation[2021M693213] ; CASHIPS Director's Fund[YZJJ2021QN20]
WOS关键词	HIGHLY EFFICIENT ; CH3NH3PBI3 PEROVSKITE ; RECOMBINATION ; NUCLEATION ; INTERFACES ; MORPHOLOGY
WOS研究方向	Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000757882000001
资助机构	National Natural Science Foundation of China ; Natural Science Foundation of Anhui Province ; China Postdoctoral Science Foundation ; CASHIPS Director's Fund
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/127936]
专题	中国科学院合肥物质科学研究院
通讯作者	Zheng, Haiying; Pan, Xu
作者单位	1.Anhui Univ, 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. Multifunctional Heterocyclic-Based Spacer Cation for Efficient and Stable 2D/3D Perovskite Solar Cells[J]. ACS APPLIED MATERIALS & INTERFACES,2022.
APA	Zheng, Haiying,Dong, Xinhe,Wu, Weiwei,Liu, Guozhen,&Pan, Xu.(2022).Multifunctional Heterocyclic-Based Spacer Cation for Efficient and Stable 2D/3D Perovskite Solar Cells.ACS APPLIED MATERIALS & INTERFACES.
MLA	Zheng, Haiying,et al."Multifunctional Heterocyclic-Based Spacer Cation for Efficient and Stable 2D/3D Perovskite Solar Cells".ACS APPLIED MATERIALS & INTERFACES (2022).