Reverse-Graded 2D Ruddlesden-Popper Perovskites for Efficient Air-Stable Solar Cells

doi:10.1002/aenm.201900612

	Reverse-Graded 2D Ruddlesden-Popper Perovskites for Efficient Air-Stable Solar Cells
	Wei, Yi 1; Chu, Huailong 1; Tian, Yuyang 1; Chen, Baoquan 1; Wu, Kaifeng 2,3; Wang, Junhui 2,3; Yang, Xichuan 4; Cai, Bin 4; Zhang, Yongfei 4; Zhao, Jijun 1
刊名	ADVANCED ENERGY MATERIALS
	2019-06-05
卷号	9 期号:21 页码:9
关键词	humidity stability multiple phases reverse-graded quantum well Ruddlesden-Popper perovskites solar cells
ISSN号	1614-6832
DOI	10.1002/aenm.201900612
通讯作者	Zhao, Jijun(zhaojj@dlut.edu.cn)
英文摘要	2D Ruddlesden-Popper perovskites (RPPs) have emerged as a promising solar cell material. A group of novel RPPs with cyclohexane methylamine (CMA) as a spacer cation is presented. Unlike previously reported RPPs, the deposited films of (CMA)(2)(MA)(n-1)PbnI3n+1 (MA is CH3NH3+, n = 1, 2, 3, horizontal ellipsis ) exhibit multiple phases with reverse-graded quantum well (QW) distribution; small n (n = 2) RPPs are located at the surface and large n (n >= 10) RPPs at the bottom. This has three advantages: (a) The outer, more moisture resistant, small n RPPs create a stable barrier that protects the vulnerable large n RPP lattice from being attacked by water molecules. (b) It forms a type-II band alignment between different phases, which favors self-driven charge transport. (c) The natural structure of graded QWs expands the range of photon collection. Attributed to these properties, the best efficiency of 15.05%, with high open-circuit voltage (V-oc) of 1.10 V for a first-generation solar cell containing (CMA)(2)(MA)(8)Pb9I28, is achieved. A notable enhancement in short wavelength is observed in the Incident photon-to-current conversion efficiency spectra. This device shows significantly improved long-term stability, retaining approximate to 95% of the initial efficiency after 4600 h exposure in ambient conditions with 40-70% relative humidity.
资助项目	National Natural Science Foundation of China[61704018] ; National Natural Science Foundation of China[51661135021] ; Doctoral Scientific Research Foundation of Liaoning Province[201501180] ; SRF for ROCS, SEM ; Supercomputing Center of Dalian University of Technology
WOS关键词	HIGHLY EFFICIENT ; PERFORMANCE ; MANAGEMENT ; ELECTRON
WOS研究方向	Chemistry ; Energy & Fuels ; Materials Science ; Physics
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000470925900003
资助机构	National Natural Science Foundation of China ; National Natural Science Foundation of China ; Doctoral Scientific Research Foundation of Liaoning Province ; Doctoral Scientific Research Foundation of Liaoning Province ; SRF for ROCS, SEM ; SRF for ROCS, SEM ; Supercomputing Center of Dalian University of Technology ; Supercomputing Center of Dalian University of Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Doctoral Scientific Research Foundation of Liaoning Province ; Doctoral Scientific Research Foundation of Liaoning Province ; SRF for ROCS, SEM ; SRF for ROCS, SEM ; Supercomputing Center of Dalian University of Technology ; Supercomputing Center of Dalian University of Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Doctoral Scientific Research Foundation of Liaoning Province ; Doctoral Scientific Research Foundation of Liaoning Province ; SRF for ROCS, SEM ; SRF for ROCS, SEM ; Supercomputing Center of Dalian University of Technology ; Supercomputing Center of Dalian University of Technology ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; Doctoral Scientific Research Foundation of Liaoning Province ; Doctoral Scientific Research Foundation of Liaoning Province ; SRF for ROCS, SEM ; SRF for ROCS, SEM ; Supercomputing Center of Dalian University of Technology ; Supercomputing Center of Dalian University of Technology
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/171966]
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
通讯作者	Zhao, Jijun
作者单位	1.Dalian Univ Technol, Key Lab Mat Modificat Laser Electron & Ion Beams, Minist Educ, Dalian 116024, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116024, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, Collaborat Innovat Ctr Chem Energy Mat iChEM, Dalian 116024, Peoples R China 4.Dalian Univ Technol, DUT KTH Joint Educ & Res Ctr Mol Devices, State Key Lab Fine Chem, Inst Artificial Photosynth, Dalian 116024, Peoples R China
推荐引用方式 GB/T 7714	Wei, Yi,Chu, Huailong,Tian, Yuyang,et al. Reverse-Graded 2D Ruddlesden-Popper Perovskites for Efficient Air-Stable Solar Cells[J]. ADVANCED ENERGY MATERIALS,2019,9(21):9.
APA	Wei, Yi.,Chu, Huailong.,Tian, Yuyang.,Chen, Baoquan.,Wu, Kaifeng.,...&Zhao, Jijun.(2019).Reverse-Graded 2D Ruddlesden-Popper Perovskites for Efficient Air-Stable Solar Cells.ADVANCED ENERGY MATERIALS,9(21),9.
MLA	Wei, Yi,et al."Reverse-Graded 2D Ruddlesden-Popper Perovskites for Efficient Air-Stable Solar Cells".ADVANCED ENERGY MATERIALS 9.21(2019):9.