气候变化领域集成服务门户(CCPortal): Highly efficient perovskite solar cells with a compositionally engineered perovskite/hole transporting material interface

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DOI	10.1039/c6ee03182j
	Highly efficient perovskite solar cells with a compositionally engineered perovskite/hole transporting material interface
	Cho K.T.; Paek S.; Grancini G.; Roldán-Carmona C.; Gao P.; Lee Y.; Nazeeruddin M.K.
发表日期	2017
ISSN	17545692
起始页码	621
结束页码	627
卷号	10 期号:2
英文摘要	Perovskite solar cells (PSCs) have experienced an outstanding advance in power conversion efficiency (PCE) by optimizing the perovskite layer morphology, composition, interfaces, and charge collection efficiency. To enhance PCE, here we developed a new method i.e., engineering a compositional gradient thinly at the rear interface between the perovskite and the hole transporting materials. We demonstrate that charge collection is improved and charge recombination is reduced by formation of an engineered passivating layer, which leads to a striking enhancement in open-circuit voltage (VOC). The passivation effect induced by constructing an additional FAPbBr3-xIx layer on top of the primary (FAPbI3)0.85(MAPbBr3)0.15 film was proven to function as an electron blocking layer within the perovskite film, resulting in a final PCE of 21.3%. Our results shed light on the importance of the interfacial engineering on the rear surface of perovskite layers and describe an innovative approach that will further boost the PSC efficiency. © The Royal Society of Chemistry 2017.
英文关键词	Efficiency; Interfaces (materials); Open circuit voltage; Passivation; Perovskite; Solar cells; Charge collection efficiency; Charge recombinations; Compositional gradients; Electron blocking layer; Hole-transporting materials; Innovative approaches; Power conversion efficiencies; Transporting materials; Perovskite solar cells; electron; energy efficiency; fuel cell; innovation; perovskite; solar power
语种	英语
来源期刊	Energy & Environmental Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/190527
作者单位	Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, Sion, CH-1951, Switzerland
推荐引用方式 GB/T 7714	Cho K.T.,Paek S.,Grancini G.,et al. Highly efficient perovskite solar cells with a compositionally engineered perovskite/hole transporting material interface[J],2017,10(2).
APA	Cho K.T..,Paek S..,Grancini G..,Roldán-Carmona C..,Gao P..,...&Nazeeruddin M.K..(2017).Highly efficient perovskite solar cells with a compositionally engineered perovskite/hole transporting material interface.Energy & Environmental Science,10(2).
MLA	Cho K.T.,et al."Highly efficient perovskite solar cells with a compositionally engineered perovskite/hole transporting material interface".Energy & Environmental Science 10.2(2017).