Colloidal SnO2-Assisted CdS Electron Transport Layer Enables Efficient Electron Extraction for Planar Perovskite Solar Cells

doi:10.1002/solr.202100494

HFCAS OpenIR

	Colloidal SnO2-Assisted CdS Electron Transport Layer Enables Efficient Electron Extraction for Planar Perovskite Solar Cells
	Zhou, Juntian 1; Zhou, Ru 1; Zhu, Jun 2; Jiang, Ping 1; Wan, Lei 1; Niu, Haihong 1; Hu, Linhua3 ; Yang, Xi1 ; Xu, Jinzhang 1; Xu, Baomin 4
	2021-08-08
发表期刊	SOLAR RRL
ISSN	2367-198X
通讯作者	Zhou, Ru(zhouru@hfut.edu.cn) ; Xu, Baomin(xubm@sustech.edu.cn)
摘要	The cadmium sulfide (CdS) is a promising electron transport layer (ETL) material for perovskite solar cells (PSCs) due to its low photocatalytic activity toward perovskite materials under UV light. The critical problem responsible for the moderate performance of CdS-based PSCs is the parasitic light absorption of CdS, which drives researchers to deposit ultrathin ETLs. However, the ultrathin ETL often involves the undesirable shunt current leakage because of the direct contact between conducting substrate and perovskite layer. Herein, a fully low-temperature solution-processed colloidal SnO2-assisted CdS (S-CdS) ETL for planar CH3NH3PbI3 PSCs is constructed. The detailed characterizations of morphological, optical, and energy levels confirm that the assistance of colloidal SnO2 provides the ameliorated continuity, reduces surface roughness and superior wettability of ETLs for high-quality perovskite formation as well as the favorable cascade band structure for efficient charge transfer. The study of charge transfer mechanisms reveals that the S-CdS ETL effectively inhibits the shunt leakage, promotes the electron extraction and suppresses the charge recombination at the ETL/perovskite interface. Consequently, the S-CdS ETL-based PSCs deliver an appreciable efficiency of 16.26%, doubling that of conventional CdS-based devices. To the best of our knowledge, this value is the champion efficiency reported for CdS-based CH3NH3PbI3 PSCs.
关键词	CdS electron transport layers low temperature perovskite solar cells SnO2
DOI	10.1002/solr.202100494
关键词[WOS]	HIGHLY EFFICIENT ; LOW-TEMPERATURE ; HALIDE PEROVSKITES ; METAL SULFIDE ; PERFORMANCE ; SURFACE ; FILM
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[51602088] ; National Natural Science Foundation of China[51802067] ; National Natural Science Foundation of China[U19A2089] ; National Key R&D Program of China[2017YFE0133800] ; Open Fund of the Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences[PECL2019KF007] ; Fundamental Research Funds for the Central Universities[JZ2020HGTB0057]
项目资助者	National Natural Science Foundation of China ; National Key R&D Program of China ; Open Fund of the Key Laboratory of Photovoltaic and Energy Conservation Materials, Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities
WOS研究方向	Energy & Fuels ; Materials Science
WOS类目	Energy & Fuels ; Materials Science, Multidisciplinary
WOS记录号	WOS:000682722700001
出版者	WILEY-V C H VERLAG GMBH
引用统计	被引频次：22[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/334002/123079
专题	中国科学院合肥物质科学研究院
通讯作者	Zhou, Ru; Xu, Baomin
作者单位	1.Hefei Univ Technol, Sch Elect Engn & Automat, Hefei 230009, Peoples R China 2.Hefei Univ Technol, Acad Optoelect Technol, Special Display & Imaging Technol Innovat Ctr Anh, Hefei 230009, Peoples R China 3.Chinese Acad Sci, Hefei Inst Phys Sci, Inst Solid State Phys, Key Lab Photovolta & Energy Conservat Mat, Hefei 230031, Peoples R China 4.Southern Univ Sci & Technol, Dept Mat Sci & Engn, Shenzhen 518055, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Juntian,Zhou, Ru,Zhu, Jun,et al. Colloidal SnO2-Assisted CdS Electron Transport Layer Enables Efficient Electron Extraction for Planar Perovskite Solar Cells[J]. SOLAR RRL,2021.
APA	Zhou, Juntian.,Zhou, Ru.,Zhu, Jun.,Jiang, Ping.,Wan, Lei.,...&Xu, Baomin.(2021).Colloidal SnO2-Assisted CdS Electron Transport Layer Enables Efficient Electron Extraction for Planar Perovskite Solar Cells.SOLAR RRL.
MLA	Zhou, Juntian,et al."Colloidal SnO2-Assisted CdS Electron Transport Layer Enables Efficient Electron Extraction for Planar Perovskite Solar Cells".SOLAR RRL (2021).