The effects of pyridine molecules structure on the defects passivation of perovskite solar cells

doi:10.1007/s10008-021-04905-1

	The effects of pyridine molecules structure on the defects passivation of perovskite solar cells
	Zhang, Yan 1; Wang, Qiao 1; Duan, Kuyu 1; Wang, Lu 2; Tao, Li 1; Zhang, Jun 1; Wang, Hao 1; Huo, Zhipeng 2
刊名	JOURNAL OF SOLID STATE ELECTROCHEMISTRY
	2021-03-13
关键词	Solar cell Perovskite Electron-donating ability Passivation Stability
ISSN号	1432-8488
DOI	10.1007/s10008-021-04905-1
通讯作者	Tao, Li(taoli1107@126.com) ; Zhang, Jun(gwen_zhang@126.com) ; Huo, Zhipeng(zhipenghuo@163.com)
英文摘要	Pyridine molecules have been widely used to improve the performances of perovskite solar cells (PSCs). However, the effects of pyridine molecular structure, especially the functional group, on the defects passivation of perovskite solar cell have a lack of investigation. In this work, we introduced three pyridine molecules as additives into perovskite layer, including pyridine (PY), 4-methyl-pyridine (MP) and 4-tertbutyl pyridine (TBP), to investigate the influences of the molecular structure on the surface-defect passivation and long-term stability of perovskite solar cells. In fact, the pyridine molecules play two roles in the perovskite films. On the one hand, due to the different molecular structure, these pyridine molecules present differences in electron-pair-donor abilities (TBP > MP > PY), and then affect the interaction of pyridine molecule with Pb2+ in perovskite. Importantly, with the increase of interaction between different functional groups and Pb2+, the defect passivation effect was enhanced. What's more, the crystal quality and light harvesting ability of the corresponding perovskite layer are improved by large crystal size and slow growth process. Consequently, PSCs with TBP, MP and PY respectively obtained a power conversion efficiency of 17.03%, 15.49% and 14.34%, which are higher than that of without additive (13.34%). On the other hand, owing to the hydrophobicity of groups, the pyridine molecules can enhance the moisture stability of devices. Significantly, the device based on the TBP-modified perovskite film exhibited improved moisture stability among the four type devices, owing to the best characteristic of the tertiary-butyl group with hydrophobicity in TBP.
资助项目	National Natural Science Foundation of China[11874143] ; National Natural Science Foundation of China[51602095] ; Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices Open Fund[K201903] ; International Clean Energy Talent Program by China Scholarship Council ; Open Fund of Hubei Key Laboratory of Ferro- & Piezoelectric Materials and Devices[K201903]
WOS研究方向	Electrochemistry
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000628112600001
资助机构	National Natural Science Foundation of China ; Hubei Key Laboratory of Ferro & Piezoelectric Materials and Devices Open Fund ; International Clean Energy Talent Program by China Scholarship Council ; Open Fund of Hubei Key Laboratory of Ferro- & Piezoelectric Materials and Devices
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/120511]
专题	中国科学院合肥物质科学研究院
通讯作者	Tao, Li; Zhang, Jun; Huo, Zhipeng
作者单位	1.Hubei Univ, Fac Phys & Elect Sci, Hubei Key Lab Ferro & Piezoelect Mat & Devices, Wuhan 430062, Peoples R China 2.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Plasma Phys, Hefei 230031, Anhui, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Yan,Wang, Qiao,Duan, Kuyu,et al. The effects of pyridine molecules structure on the defects passivation of perovskite solar cells[J]. JOURNAL OF SOLID STATE ELECTROCHEMISTRY,2021.
APA	Zhang, Yan.,Wang, Qiao.,Duan, Kuyu.,Wang, Lu.,Tao, Li.,...&Huo, Zhipeng.(2021).The effects of pyridine molecules structure on the defects passivation of perovskite solar cells.JOURNAL OF SOLID STATE ELECTROCHEMISTRY.
MLA	Zhang, Yan,et al."The effects of pyridine molecules structure on the defects passivation of perovskite solar cells".JOURNAL OF SOLID STATE ELECTROCHEMISTRY (2021).