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DOI	10.1039/c7ee00899f
	Approaching the fill factor Shockley-Queisser limit in stable, dopant-free triple cation perovskite solar cells
	Stolterfoht M.; Wolff C.M.; Amir Y.; Paulke A.; Perdigón-Toro L.; Caprioglio P.; Neher D.
发表日期	2017
ISSN	17545692
起始页码	1530
结束页码	1539
卷号	10 期号:6
英文摘要	Perovskite solar cells now compete with their inorganic counterparts in terms of power conversion efficiency, not least because of their small open-circuit voltage (VOC) losses. A key to surpass traditional thin-film solar cells is the fill factor (FF). Therefore, more insights into the physical mechanisms that define the bias dependence of the photocurrent are urgently required. In this work, we studied charge extraction and recombination in efficient triple cation perovskite solar cells with undoped organic electron/hole transport layers (ETL/HTL). Using integral time of flight we identify the transit time through the HTL as the key figure of merit for maximizing the fill factor (FF) and efficiency. Complementarily, intensity dependent photocurrent and VOC measurements elucidate the role of the HTL on the bias dependence of non-radiative and transport-related loss channels. We show that charge transport losses can be completely avoided under certain conditions, yielding devices with FFs of up to 84%. Optimized cells exhibit power conversion efficiencies of above 20% for 6 mm2 sized pixels and 18.9% for a device area of 1 cm2. These are record efficiencies for hybrid perovskite devices with dopant-free transport layers, highlighting the potential of this device technology to avoid charge-transport limitations and to approach the Shockley-Queisser limit. © The Royal Society of Chemistry 2017.
英文关键词	Conversion efficiency; Efficiency; Open circuit voltage; Perovskite; Perovskite solar cells; Positive ions; Thin film solar cells; Charge extraction; Device technologies; Intensity-dependent; Physical mechanism; Power conversion efficiencies; Record efficiencies; Shockley-queisser limits; Transport limitations; Solar cells; cation; energy efficiency; fuel cell; optimization; perovskite; power generation; 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/190466
作者单位	Institute of Physics and Astronomy, University of Potsdam, Karl-Liebknecht-Str. 24-25, Potsdam-Golm, D-14476, Germany; Institut für Silizium Photovoltaik, Helmholtz-Zentrum Berlin für Energie und Materialien, Kekuléstrasse 5, Berlin, 12489, Germany
推荐引用方式 GB/T 7714	Stolterfoht M.,Wolff C.M.,Amir Y.,et al. Approaching the fill factor Shockley-Queisser limit in stable, dopant-free triple cation perovskite solar cells[J],2017,10(6).
APA	Stolterfoht M..,Wolff C.M..,Amir Y..,Paulke A..,Perdigón-Toro L..,...&Neher D..(2017).Approaching the fill factor Shockley-Queisser limit in stable, dopant-free triple cation perovskite solar cells.Energy & Environmental Science,10(6).
MLA	Stolterfoht M.,et al."Approaching the fill factor Shockley-Queisser limit in stable, dopant-free triple cation perovskite solar cells".Energy & Environmental Science 10.6(2017).