Band alignment towards high-efficiency NiOx-based Sn-Pb mixed perovskite solar cells

doi:10.1007/s40843-020-1470-5

SIC OpenIR

	Band alignment towards high-efficiency NiOx-based Sn-Pb mixed perovskite solar cells
	Chen, H; Peng, ZJ; Xu, KM; Wei, Q; Yu, DN; Han, CC; Li, HS; Ning, ZJ
	2020-10-27
Source Publication	SCIENCE CHINA-MATERIALS
ISSN	2095-8226
Subtype	Article; Early Access
Abstract	Narrow-bandgap tin-lead (Sn-Pb) mixed perovskite solar cells (PSCs) play a key role in constructing perovskite tandem solar cells that are potential to overpass Shockley-Queisser limit. A robust, chemically stable and lowtemperature-processed hole transporting layer (HTL) is essential for building high-efficiency Sn-Pb solar cells and perovskite tandem solar cells. Here, we explore a roomtemperature-processed NiOx (L-NiOx) HTL based on nanocrystals (NCs) for Sn-Pb PSCs. In comparison with hightemperature-annealed NiOx (H-NiOx) film, the L-NiOx film shows deeper valence band and lower trap density, which increases the built-in potential and reduces carrier recombination, leading to a power conversion efficiency of 18.77%, the record for NiOx-based narrow-bandgap PSCs. Furthermore, the device maintains about 96% of its original efficiency after 50 days. This work provides a robust and room-temperatureprocessed HTL for highly efficient and stable narrow-bandgap PSCs.
DOI	10.1007/s40843-020-1470-5
WOS Keyword	TOTAL-ENERGY CALCULATIONS ; HOLE-TRANSPORT LAYER ; STABILITY ; OXIDE ; CU2O ; GROWTH
Language	英语
WOS Research Area	Materials Science
Publisher	SCIENCE PRESS
Citation statistics
Document Type	期刊论文
Identifier	http://ir.sic.ac.cn/handle/331005/27667
Collection	中国科学院上海硅酸盐研究所
Recommended Citation GB/T 7714	Chen, H,Peng, ZJ,Xu, KM,et al. Band alignment towards high-efficiency NiOx-based Sn-Pb mixed perovskite solar cells[J]. SCIENCE CHINA-MATERIALS,2020.
APA	Chen, H.,Peng, ZJ.,Xu, KM.,Wei, Q.,Yu, DN.,...&Ning, ZJ.(2020).Band alignment towards high-efficiency NiOx-based Sn-Pb mixed perovskite solar cells.SCIENCE CHINA-MATERIALS.
MLA	Chen, H,et al."Band alignment towards high-efficiency NiOx-based Sn-Pb mixed perovskite solar cells".SCIENCE CHINA-MATERIALS (2020).

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