Stable high efficiency two-dimensional perovskite solar cells via cesium doping

	Stable high efficiency two-dimensional perovskite solar cells via cesium doping
	Li, Jianbo 4; Zhang, Xu 3,4,5; Ren, Xiaodong 4; Liu, Bin 4; Munir, Rahim 1,2; Zhu, Xuejie 4; Yang, Dong 4; Liu, Yucheng 4; Smilgies, Detlef-M.6; Li, Ruipeng 6
刊名	ENERGY & ENVIRONMENTAL SCIENCE
	2017-10-01
卷号	10 期号:10 页码:2095-2102
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)(3)Pb4I13 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.
WOS标题词	Science & Technology ; Physical Sciences ; Technology ; Life Sciences & Biomedicine
类目[WOS]	Chemistry, Multidisciplinary ; Energy & Fuels ; Engineering, Chemical ; Environmental Sciences
研究领域[WOS]	Chemistry ; Energy & Fuels ; Engineering ; Environmental Sciences & Ecology
关键词[WOS]	ORGANIC-INORGANIC PEROVSKITES ; HALIDE PEROVSKITES ; LEAD IODIDE ; SINGLE-CRYSTALS ; PERFORMANCE ; STATE ; CH3NH3PBI3 ; STABILITY ; SEMICONDUCTORS ; HYSTERESIS
收录类别	SCI
语种	英语
WOS记录号	WOS:000412765600004
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/150119]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	1.KAUST, KSC, Thuwal 239556900, Saudi Arabia 2.KAUST, Phys Sci & Engn Div PSE, Thuwal 239556900, Saudi Arabia 3.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, iChEM, Dalian 116023, Peoples R China 4.Shaanxi Normal Univ, Sch Mat Sci & Engn, Shaanxi Engn Lab Adv Energy Technol,Key Lab Appl, Natl Minist Educ,Shaanxi Key Lab Adv Energy Devic, Xian 710119, Shaanxi, Peoples R China 5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 6.Cornell Univ, Cornell High Energy Synchrotron Source, Ithaca, NY 14853 USA
推荐引用方式 GB/T 7714	Li, Jianbo,Zhang, Xu,Ren, Xiaodong,et al. Stable high efficiency two-dimensional perovskite solar cells via cesium doping[J]. ENERGY & ENVIRONMENTAL SCIENCE,2017,10(10):2095-2102.
APA	Li, Jianbo.,Zhang, Xu.,Ren, Xiaodong.,Liu, Bin.,Munir, Rahim.,...&Liu, Shengzhong .(2017).Stable high efficiency two-dimensional perovskite solar cells via cesium doping.ENERGY & ENVIRONMENTAL SCIENCE,10(10),2095-2102.
MLA	Li, Jianbo,et al."Stable high efficiency two-dimensional perovskite solar cells via cesium doping".ENERGY & ENVIRONMENTAL SCIENCE 10.10(2017):2095-2102.