气候变化领域集成服务门户(CCPortal): Suppressing defects through the synergistic effect of a Lewis base and a Lewis acid for highly efficient and stable perovskite solar cells

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DOI	10.1039/c8ee02252f
	Suppressing defects through the synergistic effect of a Lewis base and a Lewis acid for highly efficient and stable perovskite solar cells
	Zhang F.; Bi D.; Pellet N.; Xiao C.; Li Z.; Berry J.J.; Zakeeruddin S.M.; Zhu K.; Grätzel M.
发表日期	2018
ISSN	17545692
起始页码	3480
结束页码	3490
卷号	11 期号:12
英文摘要	Achieving long-term operational stability at a high efficiency level for perovskite solar cells is the most challenging issue toward commercialization of this emerging photovoltaic technology. Here, we investigated the cooperation of a Lewis base and a Lewis acid by combining commercial bis-PCBM mixed isomers as the Lewis acid in the antisolvent and N-(4-bromophenyl)thiourea (BrPh-ThR) as the Lewis base in the perovskite solution precursor. The combination of the Lewis base and the Lewis acid synergistically passivates Pb 2+ and PbX 3- antisite defects, enlarges the perovskite grain size, and improves charge-carrier separation and transport, leading to improved device efficiency from 19.3% to 21.7%. In addition, this Lewis base and acid combination also suppresses moisture incursion and passivates pinholes generated in the hole-transporting layer. The unsealed devices remained at 93% of the initial efficiency value in ambient air (10-20% relative humidity) after 3600 h at 20-25 °C and dropped by 10% after 1500 h under continuous operation at 1-sun illumination and 55 °C in nitrogen with maximum power-point tracking. © 2018 The Royal Society of Chemistry.
英文关键词	Complexation; Defects; Efficiency; Isomers; Maximum power point trackers; Perovskite; Perovskite solar cells; Solar power generation; Carrier separation; Continuous operation; Hole transporting layers; Maximum Power Point Tracking; Operational stability; Photovoltaic technology; Solution precursor; Synergistic effect; Solar cells; algorithm; ambient air; chemical compound; efficiency measurement; energy efficiency; equipment; fuel cell; operations technology; performance assessment; perovskite; photovoltaic system; separation
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/190061
作者单位	National Renewable Energy Laboratory, Golden, CO 80401, United States; Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne (EPFL), Lausanne, CH-1015, Switzerland; School of Materials Science and Engineering, Sun Yat-sen University, No. 135 Xingang Xi Road, Guangzhou, 510275, China
推荐引用方式 GB/T 7714	Zhang F.,Bi D.,Pellet N.,et al. Suppressing defects through the synergistic effect of a Lewis base and a Lewis acid for highly efficient and stable perovskite solar cells[J],2018,11(12).
APA	Zhang F..,Bi D..,Pellet N..,Xiao C..,Li Z..,...&Grätzel M..(2018).Suppressing defects through the synergistic effect of a Lewis base and a Lewis acid for highly efficient and stable perovskite solar cells.Energy & Environmental Science,11(12).
MLA	Zhang F.,et al."Suppressing defects through the synergistic effect of a Lewis base and a Lewis acid for highly efficient and stable perovskite solar cells".Energy & Environmental Science 11.12(2018).