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DOI	10.1039/d0ee03839c
	22.8%-Efficient single-crystal mixed-cation inverted perovskite solar cells with a near-optimal bandgap
	Alsalloum A.Y.; Turedi B.; Almasabi K.; Zheng X.; Naphade R.; Stranks S.D.; Mohammed O.F.; Bakr O.M.
发表日期	2021
ISSN	17545692
起始页码	2263
结束页码	2268
卷号	14 期号:4
英文摘要	Expanding the near-infrared (NIR) response of perovskite materials to approach the ideal bandgap range (1.1-1.4 eV) for single-junction solar cells is an attractive step to unleash the full potential of perovskite solar cells (PSCs). However, polycrystalline formamidinium lead triiodide (FAPbI3)-based absorbers, used in record-efficiency PSCs, currently offer the smallest bandgap that can be achieved for lead-halide perovskite thin films (>100 meV larger than the optimal bandgap). Here, we uncover that utilizing a mixed-cation single-crystal absorber layer (FA0.6MA0.4PbI3) is capable of redshifting the external quantum efficiency (EQE) band edge past that of FAPbI3 polycrystalline solar cells by about 50 meV-only 60 meV larger than that of the top-performing photovoltaic material, GaAs-leading to EQE-verified short-circuit current densities exceeding 26 mA cm-2 without sacrificing the open-circuit voltage (VOC), and therefore, yielding power conversion efficiencies of up to 22.8%. These figures of merit not only set a new record for SC-PSCs and are among the highest reported for inverted-structured-PSCs, but also offer an avenue for lead halide PSCs to advance their performance toward their theoretical Shockley-Queisser Limit potential. This journal is © The Royal Society of Chemistry.
英文关键词	Efficiency; Energy gap; Gallium arsenide; III-V semiconductors; Infrared devices; Lead compounds; Open circuit voltage; Perovskite; Positive ions; Single crystals; External quantum efficiency; Halide perovskites; Photovoltaic materials; Polycrystalline solar cells; Power conversion efficiencies; Record efficiencies; Shockley-queisser limits; Single junction solar cells; Perovskite solar cells; cation; crystal; fuel cell; 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/190693
作者单位	Division of Physical Sciences and Engineering, King Abdullah University of Science and Technology, Thuwal, Saudi Arabia; Cavendish Laboratory, University of Cambridge, JJ Thomson Avenue, Cambridge, CB3 0HE, United Kingdom; Department of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge, CB3 0AS, United Kingdom
推荐引用方式 GB/T 7714	Alsalloum A.Y.,Turedi B.,Almasabi K.,et al. 22.8%-Efficient single-crystal mixed-cation inverted perovskite solar cells with a near-optimal bandgap[J],2021,14(4).
APA	Alsalloum A.Y..,Turedi B..,Almasabi K..,Zheng X..,Naphade R..,...&Bakr O.M..(2021).22.8%-Efficient single-crystal mixed-cation inverted perovskite solar cells with a near-optimal bandgap.Energy & Environmental Science,14(4).
MLA	Alsalloum A.Y.,et al."22.8%-Efficient single-crystal mixed-cation inverted perovskite solar cells with a near-optimal bandgap".Energy & Environmental Science 14.4(2021).