Reexamining the Post-Treatment Effects on Perovskite Solar Cells: Passivation and Chloride Redistribution

doi:10.1002/smtd.202201467

IMR OpenIR

	Reexamining the Post-Treatment Effects on Perovskite Solar Cells: Passivation and Chloride Redistribution
	Yuan, Ligang 1; Wang, Jiarong 1; Huang, Peng 2; Yin, Qixin 3; Zou, Shibing 1; Wang, Lipeng 4; Zhang, Zheng 1; Luo, Huiming 1; Liu, Feng 5; Qiu, Jianhang 4; Xie, Jiangsheng 3; Ding, Liming 6; Yan, Keyou 1
通讯作者	Yan, Keyou(kyyan@scut.edu.cn)
	2023-01-11
发表期刊	SMALL METHODS
ISSN	2366-9608
页码	10
摘要	Post-treatment is an essential passivation step for the state-of-the-art perovskite solar cells (PSCs) but the additional role is not yet exploited. In this work, perovskite film is fabricated under ambient air with wide humidity window and identify that chloride redistribution induced by post-treatment plays an important role in high performance. The chlorine/iodine ratio on the perovskite surface increases from 0.037 to 0.439 after cyclohexylmethylammonium iodide (CHMAI) treatment and the PSCs deliver a champion power conversion efficiency (PCE) of 24.42% (certificated 23.60%). The maximum external quantum efficiency of electroluminescence (EQE(EL)) reaches to 10.84% with a radiance of 170 W sr(-1) m(-2), forming the reciprocity relation between EQE(EL) and nonradiative open-circuit voltage loss (86.0 mV). After thermal annealing, 2D component of perovskite will increase while chloride decline, leading to improved photovoltage but reduced fill factor. Hence, it distinguishes that chloride enrichment can improve charge transport/recombination simultaneously and 2D passivation can suppress the nonradiative recombination. Moreover, CHMAI can leverage their roles in charge transport/recombination for better performance than phenylethylammonium iodide (Cl/I = 0.114, PCE = 23.32%), due to the stronger binding energy of Cl-. This work provides the insight that the chloride fixation can improve the photovoltaic performance.
关键词	2D passivation chloride enrichment perovskite solar cells post-treatment recombination transport
资助者	National Key Research and Development Program of China ; Central Organization Department and South China University of Technology ; National Natural Science Foundation of China ; Guangdong Science and Technology Program ; Program for Introducing Overseas High-level Talents of Shanxi
DOI	10.1002/smtd.202201467
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2022YFB3803300] ; Central Organization Department and South China University of Technology ; National Natural Science Foundation of China[U2001217] ; National Natural Science Foundation of China[21905163] ; Guangdong Science and Technology Program[2020B121201003] ; Guangdong Science and Technology Program[2019ZT08L075] ; Guangdong Science and Technology Program[2019QN01L118] ; Program for Introducing Overseas High-level Talents of Shanxi
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
WOS类目	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary
WOS记录号	WOS:000911823000001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：14[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/321006/175398
专题	中国科学院金属研究所
通讯作者	Yan, Keyou
作者单位	1.South China Univ Technol, Sch Environm & Energy, State Key Lab Luminescent Mat & Devices, Guangdong Prov Key Lab Solid Wastes Pollut Control, Guangzhou 510000, Peoples R China 2.Southwest Jiaotong Univ, Res Inst Frontier Sci, Chengdu 610031, Peoples R China 3.Sun Yat sen Univ, Sch Mat, Guangzhou 510275, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 5.Shanxi Univ, Sch Chem & Chem Engn, Taiyuan 030006, Peoples R China 6.Ctr Excellence Nanosci CAS, Natl Ctr Nanosci & Technol, Key Lab Nanosyst & Hierarch Fabricat CAS, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Yuan, Ligang,Wang, Jiarong,Huang, Peng,et al. Reexamining the Post-Treatment Effects on Perovskite Solar Cells: Passivation and Chloride Redistribution[J]. SMALL METHODS,2023:10.
APA	Yuan, Ligang.,Wang, Jiarong.,Huang, Peng.,Yin, Qixin.,Zou, Shibing.,...&Yan, Keyou.(2023).Reexamining the Post-Treatment Effects on Perovskite Solar Cells: Passivation and Chloride Redistribution.SMALL METHODS,10.
MLA	Yuan, Ligang,et al."Reexamining the Post-Treatment Effects on Perovskite Solar Cells: Passivation and Chloride Redistribution".SMALL METHODS (2023):10.