In Situ Observation of Vapor-Assisted 2D-3D Heterostructure Formation for Stable and Efficient Perovskite Solar Cells

doi:10.1021/acs.nanolett.9b04759

CORC > 上海应用物理研究所 > 中国科学院上海应用物理研究所 > 中科院上海应用物理研究所2011-2017年

	In Situ Observation of Vapor-Assisted 2D-3D Heterostructure Formation for Stable and Efficient Perovskite Solar Cells
	Liu, Z ; Meng, K ; Wang, X ; Qiao, Z ; Xu, QF ; Li, SD ; Cheng, L ; Li, ZM ; Chen, G
刊名	NANO LETTERS
	2020
卷号	20 期号:2 页码:1296-1304
关键词	HALIDE PEROVSKITES STABILITY VOLTAGE GROWTH FILMS
ISSN号	1530-6984
DOI	10.1021/acs.nanolett.9b04759
文献子类	期刊论文
英文摘要	The heterogeneous stacking of a thin two-dimensional (2D) perovskite layer over the three-dimensional (3D) perovskite film creates a sophisticated architecture for perovskite solar cells (PSCs). It combines the remarkable thermal and environmental stabilities of 2D perovskites with the superior optoelectronic properties of 3D materials which resolves the chronic stability issue with no compromise on efficiency. Herein, we propose the vapor-assisted growth strategy to fabricate high-quality 2D/3D heterostructured perovskite films by introducing long-chain organoamine gases in which the 2D layers have a uniform and tunable thickness. The 3D to 2D transformation of the widely adopted MAPbI(3) (MA = methylammonium) film is initiated by the butylamine vapor and monitored through the in situ grazing-incidence X-ray diffraction technique. A variety of 2D species are observed and rationalized by the different collapsing and reconstruction models of the Pb-I octahedra. The PSC devices based on the optimized 2D/3D heterostructures show significant improvements in photovoltaic performances, owing to better energy level alignments, longer carrier lifetimes, and less defects as compared to their 3D analogues. In addition, both the butylamine vapor-treated perovskite films and the derived PSC devices demonstrate exceptional long-term stabilities.
语种	英语
内容类型	期刊论文
源URL	[http://ir.sinap.ac.cn/handle/331007/32927]
专题	上海应用物理研究所_中科院上海应用物理研究所2011-2017年
作者单位	1.ShanghaiTech Univ, Sch Phys Sci & Technol, Shanghai 201210, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Appl Phys, Shanghai Synchrotron Radiat Facil, Shanghai 201204, Peoples R China 3.Univ Shanghai Sci & Technol, Sch Environm & Architecture, Shanghai 200093, Peoples R China
推荐引用方式 GB/T 7714	Liu, Z,Meng, K,Wang, X,et al. In Situ Observation of Vapor-Assisted 2D-3D Heterostructure Formation for Stable and Efficient Perovskite Solar Cells[J]. NANO LETTERS,2020,20(2):1296-1304.
APA	Liu, Z.,Meng, K.,Wang, X.,Qiao, Z.,Xu, QF.,...&Chen, G.(2020).In Situ Observation of Vapor-Assisted 2D-3D Heterostructure Formation for Stable and Efficient Perovskite Solar Cells.NANO LETTERS,20(2),1296-1304.
MLA	Liu, Z,et al."In Situ Observation of Vapor-Assisted 2D-3D Heterostructure Formation for Stable and Efficient Perovskite Solar Cells".NANO LETTERS 20.2(2020):1296-1304.