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DOI	10.1039/c7ee02634j
	A novel quadruple-cation absorber for universal hysteresis elimination for high efficiency and stable perovskite solar cells
	Bu T.; Liu X.; Zhou Y.; Yi J.; Huang X.; Luo L.; Xiao J.; Ku Z.; Peng Y.; Huang F.; Cheng Y.-B.; Zhong J.
发表日期	2017
ISSN	17545692
起始页码	2509
结束页码	2515
卷号	10 期号:12
英文摘要	Organic-inorganic metal halide perovskite solar cells (PSCs) have made a striking breakthrough with a power conversion efficiency (PCE) over 22%. However, before moving to commercialization, the hysteresis of PSCs, characterized as an inconsistent photovoltaic conversion property at varied electric fields, should be eliminated for stable performance. Herein, we present a novel quadruple-cation perovskite absorber, KxCs0.05(FA0.85MA0.15)0.95Pb(I0.85Br0.15)3 (labeled as KCsFAMA), with which the hysteresis in PSCs can be fully eliminated irrespective of the electron transportation layers. The incorporation of potassium intensively promotes the crystallization of the perovskite film with a grain size up to ∼1 μm, doubled compared to the K free counterparts. Further characterization revealed that a lower interface defect density, longer carrier lifetime and fast charge transportation have all made contributions to the hysteresis-free, stable and high PCE (20.56%) of the KCsFAMA devices. Moreover, we present a 6 × 6 cm2 sub-module with the KCsFAMA composition achieving a high efficiency of 15.76% without hysteresis. This result suggests that the quadruple-cation perovskite is a highly attractive candidate for future developments of efficient and stable PSC modules. © The Royal Society of Chemistry.
英文关键词	Carrier lifetime; Defect density; Efficiency; Electric fields; Hysteresis; Metal halides; Perovskite; Positive ions; Solar cells; Electron transportation; Hysteresis free; Interface defects; Organic-inorganic; Perovskite films; Photovoltaic conversion; Power conversion efficiencies; Stable performance; Perovskite solar cells; cation; crystallization; efficiency measurement; fuel cell; grain size; hysteresis; photovoltaic system; pollutant removal; 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/190362
作者单位	State Key Laboratory of Advanced Technology for Materials Synthesis and Processing, Wuhan University of Technology, Wuhan, 430070, China; Department of Materials Science and Engineering, Monash UniversityVIC 3800, Australia
推荐引用方式 GB/T 7714	Bu T.,Liu X.,Zhou Y.,et al. A novel quadruple-cation absorber for universal hysteresis elimination for high efficiency and stable perovskite solar cells[J],2017,10(12).
APA	Bu T..,Liu X..,Zhou Y..,Yi J..,Huang X..,...&Zhong J..(2017).A novel quadruple-cation absorber for universal hysteresis elimination for high efficiency and stable perovskite solar cells.Energy & Environmental Science,10(12).
MLA	Bu T.,et al."A novel quadruple-cation absorber for universal hysteresis elimination for high efficiency and stable perovskite solar cells".Energy & Environmental Science 10.12(2017).