Effective Interface Defect Passivation via Employing 1-Methylbenzimidazole for Highly Efficient and Stable Perovskite Solar Cells

doi:10.1002/cssc.202101097

HFCAS OpenIR

	Effective Interface Defect Passivation via Employing 1-Methylbenzimidazole for Highly Efficient and Stable Perovskite Solar Cells
	Zheng, Haiying 1,2; Liu, Guozhen 3; Wu, Weiwei 1,2; Xu, Huifen 1,2,3; Pan, Xu3
	2021-07-05
发表期刊	CHEMSUSCHEM
ISSN	1864-5631
通讯作者	Liu, Guozhen(gzliu@issp.ac.cn) ; Pan, Xu(xpan@rntek.cas.cn)
摘要	Although the power conversion efficiencies (PCEs) of perovskite solar cells (PSCs) have made great progress, the surface and interface defects still affect their PCE and stability and hinder the commercialization. To overcome this problem, 1-methylimidazole (1-MIm) and 1-methylbenzimidazole (1-MBIm) were used as the interfacial passivation agents to passivate the defects at surface and interface. The results indicated that, in contrast to 1-MIm, 1-MBIm displayed a stronger Lewis coordination interaction with the uncoordinated Pb2+ to reduce the non-radiative recombination and also effectively improved the charge transfer capacity of perovskite films due to its strong pi-pi conjugate interaction, resulting in the better photovoltaic performance. As a result, the PCE of the champion 1-MBIm PSC was improved from 19.48 (pristine) to 21.22 % with a dramatically enhanced open-circuit voltage (V-oc=1.15 V). More importantly, a significant improvement in long-term stability was achieved for 1-MBIm perovskite devices, which was attributed to the high-quality perovskite film caused by the strong passivation effect of 1-MBIm and the hydrogen bond with water molecules. The results offers an efficient and facile strategy by interface engineering to fabricate high-performance and stable PSCs for commercial application.
关键词	high performance passivation layer perovskite solar cells photovoltaics stability
DOI	10.1002/cssc.202101097
关键词[WOS]	CATION
收录类别	SCI
语种	英语
资助项目	Natural Science Foundation of Anhui Province[2008085QE208] ; CASHIPS Director's Fund[YZJJ2021QN20]
项目资助者	Natural Science Foundation of Anhui Province ; CASHIPS Director's Fund
WOS研究方向	Chemistry ; Science & Technology - Other Topics
WOS类目	Chemistry, Multidisciplinary ; Green & Sustainable Science & Technology
WOS记录号	WOS:000669678900001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：10[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.hfcas.ac.cn:8080/handle/334002/123437
专题	中国科学院合肥物质科学研究院
通讯作者	Liu, Guozhen; Pan, Xu
作者单位	1.Anhui Univ, Inst Phys Sci, Hefei 230601, Peoples R China 2.Anhui Univ, Inst Informat Technol, Hefei 230601, Peoples R China 3.Chinese Acad Sci, Inst Solid State Phys, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China
推荐引用方式 GB/T 7714	Zheng, Haiying,Liu, Guozhen,Wu, Weiwei,et al. Effective Interface Defect Passivation via Employing 1-Methylbenzimidazole for Highly Efficient and Stable Perovskite Solar Cells[J]. CHEMSUSCHEM,2021.
APA	Zheng, Haiying,Liu, Guozhen,Wu, Weiwei,Xu, Huifen,&Pan, Xu.(2021).Effective Interface Defect Passivation via Employing 1-Methylbenzimidazole for Highly Efficient and Stable Perovskite Solar Cells.CHEMSUSCHEM.
MLA	Zheng, Haiying,et al."Effective Interface Defect Passivation via Employing 1-Methylbenzimidazole for Highly Efficient and Stable Perovskite Solar Cells".CHEMSUSCHEM (2021).