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Imidazole derivative spacers functional-group-induced regulation of interfacial recrystallization and defect passivation ability for high-performance perovskite solar cells

文献类型：期刊论文

作者Chen, Feifan2; Liu, Guozhen3; Wu, Chaoyang2; Wang, Chao2; Dong, Xinhe2; Zheng, Haiying2; Pan, Xu1
刊名CHEMICAL ENGINEERING JOURNAL
出版日期2024-10-01
卷号497
关键词Perovskite solar cells Imidazole derivative spacers Different functional group Interfacial recrystallization Defect passivation ability
ISSN号1385-8947
DOI10.1016/j.cej.2024.154638
通讯作者Zheng, Haiying(hyzheng@ahu.edu.cn)
英文摘要The formation of numerous defects in perovskite films during the annealing process will damage the performance and operational stability of perovskite solar cells (PSCs). Interfacial reconstruction by organic cations is an effective and promising strategy to repair terminal defects and improve stability of perovskite films. Herein, we employed three imidazole derivative spacer cations with different functional groups (- MeNH2, -MeOH and - MeCOOH) to in-situ grow multifunctional 2D perovskite passivation layers. The imidazole derivative cations not only induce interfacial recrystallization during secondary annealing but also regulate the interfacial reconstruction process and the defect passivation capability of the 2D perovskite layers. The modified perovskite film based on 2-(1H-Imidazol-5-yl)acetic acid hydrochloride (4-MeCOOH*IM) with highest adsorption energy displays increased grain sizes, higher crystallinity and lower surface roughness, resulting in faster charge carrier transport and suppressed non-radiative recombination. As a result, the carrier lifetime of the 4-MeCOOH*IM perovskite film increases from 691.43 (control) to 3213.19 ns, and the corresponding photovoltaic device yields highest PCE of 24.59 % with high open-circuit voltage (Voc) of 1.20 V. Furthermore, the modified devices exhibit excellent long-term stability under humidity and high temperature conditions. The study demonstrates that the interfacial recrystallization process and defect passivation ability of perovskite films can be regulated by modulating the introduced spacer cations with different functional groups, which provides a reference for regulating multifunctional interface in high-performance PSCs.
资助项目National Natural Science Foundation of China[52102196] ; China Postdoctoral Science Foundation[2023M740474] ; Postdoctoral Fellowship Pro-gram of CPSF[GZB20230095]
WOS研究方向Engineering
语种英语
WOS记录号WOS:001294449100001
出版者ELSEVIER SCIENCE SA
资助机构National Natural Science Foundation of China ; China Postdoctoral Science Foundation ; Postdoctoral Fellowship Pro-gram of CPSF
源URL[http://ir.hfcas.ac.cn:8080/handle/334002/136067]  
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.Chinese Acad Sci, Inst Solid State Phys, Hefei Inst Phys Sci, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China
2.Anhui Univ, Inst Phys Sci & Informat Technol, Hefei 230601, Peoples R China
3.Dalian Univ Technol, Frontier Sci Ctr Smart Mat, Sch Chem, State Key Lab Fine Chem, Dalian 116024, Peoples R China
推荐引用方式
GB/T 7714		 Chen, Feifan,Liu, Guozhen,Wu, Chaoyang,et al. Imidazole derivative spacers functional-group-induced regulation of interfacial recrystallization and defect passivation ability for high-performance perovskite solar cells[J]. CHEMICAL ENGINEERING JOURNAL,2024,497.
APA Chen, Feifan.,Liu, Guozhen.,Wu, Chaoyang.,Wang, Chao.,Dong, Xinhe.,...&Pan, Xu.(2024).Imidazole derivative spacers functional-group-induced regulation of interfacial recrystallization and defect passivation ability for high-performance perovskite solar cells.CHEMICAL ENGINEERING JOURNAL,497.
MLA Chen, Feifan,et al."Imidazole derivative spacers functional-group-induced regulation of interfacial recrystallization and defect passivation ability for high-performance perovskite solar cells".CHEMICAL ENGINEERING JOURNAL 497(2024).

入库方式： OAI收割

来源：合肥物质科学研究院

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