Compositional Control in 2D Perovskites with Alternating Cations in the Interlayer Space for Photovoltaics with Efficiency over 18%

doi:10.1002/adma.201903848

	Compositional Control in 2D Perovskites with Alternating Cations in the Interlayer Space for Photovoltaics with Efficiency over 18%
	Luo, Tao 1,2; Zhang, Yalan 1,2; Xu, Zhuo 1,2; Niu, Tianqi 1,2; Wen, Jialun 1,2; Lu, Jing 1,2; Jin, Shengye 3; Liu, Shengzhong (Frank)1,2,3; Zhao, Kui 1,2
刊名	ADVANCED MATERIALS
	2019-09-15
页码	8
关键词	ACI perovskites charge transport quantum wells solar cells
ISSN号	0935-9648
DOI	10.1002/adma.201903848
通讯作者	Liu, Shengzhong (Frank)(szliu@dicp.ac.cn) ; Zhao, Kui(zhaok@snnu.edu.cn)
英文摘要	2D perovskites stabilized by alternating cations in the interlayer space (ACI) represent a very new entry as highly efficient semiconductors for solar cells approaching 15% power conversion efficiency (PCE). However, further improvements will require understanding of the nature of the films, e.g., the thickness distribution and charge-transfer characteristics of ACI quantum wells (QWs), which are currently unknown. Here, efficient control of the film quality of ACI 2D perovskite (GA)(MA)(n)PbnI3n+1 (n = 3) QWs via incorporation of methylammonium chloride as an additive is demonstrated. The morphological and optoelectronic characterizations unambiguously demonstrate that the additive enables a larger grain size, a smoother surface, and a gradient distribution of QW thickness, which lead to enhanced photocurrent transport/extraction through efficient charge transfer between low-n and high-n QWs and suppressed nonradiative charge recombination. Therefore, the additive-treated ACI perovskite film delivers a champion PCE of 18.48%, far higher than the pristine one (15.79%) due to significant improvements in open-circuit voltage and fill factor. This PCE also stands as the highest value for all reported 2D perovskite solar cells based on the ACI, Ruddlesden-Popper, and Dion-Jacobson families. These findings establish the fundamental guidelines for the compositional control of 2D perovskites for efficient photovoltaics.
资助项目	National Key Research and Development Program of China[2017YFA0204800] ; National Key Research and Development Program of China[2016YFA0202403] ; National Natural Science Foundation of China[61974085] ; National University Research fund[GK201802005] ; Natural Science Basic Research Plan in Shaanxi Province of China[2017JQ6040] ; 111 Project[B14041] ; National Thousand Talents Plan program[1110010341]
WOS关键词	GUANIDINIUM
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000486684900001
资助机构	National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National University Research fund ; National University Research fund ; Natural Science Basic Research Plan in Shaanxi Province of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; 111 Project ; 111 Project ; National Thousand Talents Plan program ; National Thousand Talents Plan program ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National University Research fund ; National University Research fund ; Natural Science Basic Research Plan in Shaanxi Province of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; 111 Project ; 111 Project ; National Thousand Talents Plan program ; National Thousand Talents Plan program ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National University Research fund ; National University Research fund ; Natural Science Basic Research Plan in Shaanxi Province of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; 111 Project ; 111 Project ; National Thousand Talents Plan program ; National Thousand Talents Plan program ; National Key Research and Development Program of China ; National Key Research and Development Program of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National University Research fund ; National University Research fund ; Natural Science Basic Research Plan in Shaanxi Province of China ; Natural Science Basic Research Plan in Shaanxi Province of China ; 111 Project ; 111 Project ; National Thousand Talents Plan program ; National Thousand Talents Plan program
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/173375]
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	Liu, Shengzhong (Frank); Zhao, Kui
作者单位	1.Shaanxi Normal Univ, Key Lab Appl Surface & Colloid Chem, Shaanxi Key Lab Adv Energy Devices, Minist Educ, Xian 710119, Shaanxi, Peoples R China 2.Shaanxi Normal Univ, Shaanxi Engn Lab Adv Energy Technol, Sch Mat Sci & Engn, Xian 710119, Shaanxi, Peoples R China 3.Chinese Acad Sci, Dalian Natl Lab Clean Energy iChEM, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	Luo, Tao,Zhang, Yalan,Xu, Zhuo,et al. Compositional Control in 2D Perovskites with Alternating Cations in the Interlayer Space for Photovoltaics with Efficiency over 18%[J]. ADVANCED MATERIALS,2019:8.
APA	Luo, Tao.,Zhang, Yalan.,Xu, Zhuo.,Niu, Tianqi.,Wen, Jialun.,...&Zhao, Kui.(2019).Compositional Control in 2D Perovskites with Alternating Cations in the Interlayer Space for Photovoltaics with Efficiency over 18%.ADVANCED MATERIALS,8.
MLA	Luo, Tao,et al."Compositional Control in 2D Perovskites with Alternating Cations in the Interlayer Space for Photovoltaics with Efficiency over 18%".ADVANCED MATERIALS (2019):8.