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题名: Stable high efficiency two-dimensional perovskite solar cells via cesium doping
作者: Zhang, Xu1, 2, 3;  Ren, Xiaodong2;  Liu, Bin2;  Munir, Rahim4, 5;  Zhu, Xuejie2;  Yang, Dong2;  Li, Jianbo2;  Liu, Yucheng2;  Smilgies, Detlef-M.6;  Li, Ruipeng6;  Yang, Zhou2;  Niu, Tianqi2;  Wang, Xiuli1;  Amassian, Aram4, 5;  Zhao, Kui2;  Liu, Shengzhong (Frank)1, 2
刊名: ENERGY & ENVIRONMENTAL SCIENCE
发表日期: 2017-10-01
DOI: 10.1039/c7ee01145h
卷: 10, 期:10, 页:2095-2102
收录类别: SCI
文章类型: Article
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
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.
关键词[WOS]: ORGANIC-INORGANIC PEROVSKITES ;  HALIDE PEROVSKITES ;  LEAD IODIDE ;  SINGLE-CRYSTALS ;  PERFORMANCE ;  STATE ;  CH3NH3PBI3 ;  STABILITY ;  SEMICONDUCTORS ;  HYSTERESIS
语种: 英语
WOS记录号: WOS:000412765600004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/150119
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, iChEM, Dalian 116023, Peoples R China
2.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
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
4.KAUST, KSC, Thuwal 239556900, Saudi Arabia
5.KAUST, Phys Sci & Engn Div PSE, Thuwal 239556900, Saudi Arabia
6.Cornell Univ, Cornell High Energy Synchrotron Source, Ithaca, NY 14853 USA

Recommended Citation:
Zhang, Xu,Ren, Xiaodong,Liu, Bin,et al. Stable high efficiency two-dimensional perovskite solar cells via cesium doping[J]. ENERGY & ENVIRONMENTAL SCIENCE,2017,10(10):2095-2102.
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