气候变化领域集成服务门户(CCPortal): Stable high efficiency two-dimensional perovskite solar cells via cesium doping

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DOI	10.1039/c7ee01145h
	Stable high efficiency two-dimensional perovskite solar cells via cesium doping
	Zhang X.; Ren X.; Liu B.; Munir R.; Zhu X.; Yang D.; Li J.; Liu Y.; Smilgies D.-M.; Li R.; Yang Z.; Niu T.; Wang X.; Amassian A.; Zhao K.; Liu S.
发表日期	2017
ISSN	17545692
起始页码	2095
结束页码	2102
卷号	10 期号:10
英文摘要	Two-dimensional (2D) organic-inorganic perovskites have recently emerged as one of the most important thin-film solar cell materials owing to their excellent environmental stability. The remaining major pitfall is their relatively poor photovoltaic performance in contrast to 3D perovskites. In this work we demonstrate cesium cation (Cs+) doped 2D (BA)2(MA)3Pb4I13 perovskite solar cells giving a power conversion efficiency (PCE) as high as 13.7%, the highest among the reported 2D devices, with excellent humidity resistance. The enhanced efficiency from 12.3% (without Cs+) to 13.7% (with 5% Cs+) is attributed to perfectly controlled crystal orientation, an increased grain size of the 2D planes, superior surface quality, reduced trap-state density, enhanced charge-carrier mobility and charge-transfer kinetics. Surprisingly, it is found that the Cs+ doping yields superior stability for the 2D perovskite solar cells when subjected to a high humidity environment without encapsulation. The device doped using 5% Cs+ degrades only ca. 10% after 1400 hours of exposure in 30% relative humidity (RH), and exhibits significantly improved stability under heating and high moisture environments. Our results provide an important step toward air-stable and fully printable low dimensional perovskites as a next-generation renewable energy source. © The Royal Society of Chemistry.
英文关键词	Cesium; Charge transfer; Crystal orientation; Perovskite; Perovskite solar cells; Renewable energy resources; Semiconductor doping; Thin film solar cells; Charge transfer kinetics; Environmental stability; High-humidity environment; Humidity resistance; Photovoltaic performance; Power conversion efficiencies; Renewable energy source; Two Dimensional (2 D); Solar cells; cesium; crystal structure; energy efficiency; grain size; heating; humidity; moisture; perovskite; photovoltaic system
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/190401
作者单位	Dalian National Laboratory for Clean Energy, IChEM, Dalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian, 116023, China; Key Laboratory of Applied Surface and Colloid Chemistry, National Ministry of Education, Shaanxi Key Laboratory for Advanced Energy Devices, Shaanxi Engineering Lab for Advanced Energy Technology, School of Materials Science and Engineering, Shaanxi Normal University, Xi'an, 710119, China; University of Chinese Academy of Sciences, Beijing, 100049, China; King Abdullah University of Science and Technology (KAUST), KAUST Solar Center (KSC), Physical Science and Engineering Division (PSE), Thuwal, 23955-6900, Saudi Arabia; Cornell High Energy Synchrotron Source (CHESS), Cornell University, Ithaca, NY 14853, United States
推荐引用方式 GB/T 7714	Zhang X.,Ren X.,Liu B.,et al. Stable high efficiency two-dimensional perovskite solar cells via cesium doping[J],2017,10(10).
APA	Zhang X..,Ren X..,Liu B..,Munir R..,Zhu X..,...&Liu S..(2017).Stable high efficiency two-dimensional perovskite solar cells via cesium doping.Energy & Environmental Science,10(10).
MLA	Zhang X.,et al."Stable high efficiency two-dimensional perovskite solar cells via cesium doping".Energy & Environmental Science 10.10(2017).