(C6H5C2H4NH3)(2)GeI4: A Layered Two-Dimensional Perovskite with Potential for Photovoltaic Applications

	(C6H5C2H4NH3)(2)GeI4: A Layered Two-Dimensional Perovskite with Potential for Photovoltaic Applications
	Deng, Wei-Qiao 3; Cheng, Pengfei 3,4; Wu, Tao 1,3; Zhang, Jiangwei 2; Li, Yajuan 3,4; Liu, Junxue 3; Jiang, Lei 3; Mao, Xin 3,4; Lu, Rui-Feng 1; Han, Keli 3
刊名	JOURNAL OF PHYSICAL CHEMISTRY LETTERS
	2017-09-21
卷号	8 期号:18 页码:4402-4406
英文摘要	Recently, two-dimensional organic inorganic perovskites have attracted increasing attention due to their unique photophysical properties and high stability. Here we report a lead-free, two-dimensional perovskite, (PEA)(2)GeI4 (PEA = C6H5(CH2)(2)NH3+). Structural characterization demonstrated that this 2D perovskite structure is formed with inorganic germanium iodide planes separated by organic PEAT layers. (PEA)2GeI4 has a direct band gap of 2.12 eV, in agreement with 2.17 eV obtained by density functional theory (DFT) calculations, implying that it is suitable for a tandem solar cell. (PEA)(2)GeI4 luminesces at room-temperature with a moderate lifetime, exhibiting good potential for photovoltaic applications. In addition, 2D (PEA)(2)GeI4 is more stable than 3D CH3NH3GeI3 in air, owing to the presence of a hydrophobic organic long chain. This work provides a direction for the development of 2D Ge-based perovskites with potential for photovoltaic applications.
WOS标题词	Science & Technology ; Physical Sciences ; Technology
类目[WOS]	Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical
研究领域[WOS]	Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
关键词[WOS]	ORGANIC-INORGANIC PEROVSKITES ; METAL-HALIDE PEROVSKITES ; AUGMENTED-WAVE METHOD ; OPTICAL-PROPERTIES ; SEMICONDUCTORS ; TRANSITIONS ; COMPOUND ; DESIGN
收录类别	SCI
语种	英语
WOS记录号	WOS:000411781900013
内容类型	期刊论文
源URL	[http://cas-ir.dicp.ac.cn/handle/321008/150102]
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.Nanjing Univ Sci & Technol, Dept Appl Phys, Nanjing 210094, Jiangsu, Peoples R China 2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Gold Catalysis Res Ctr, Dalian 116023, Peoples R China 3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
推荐引用方式 GB/T 7714	Deng, Wei-Qiao,Cheng, Pengfei,Wu, Tao,et al. (C6H5C2H4NH3)(2)GeI4: A Layered Two-Dimensional Perovskite with Potential for Photovoltaic Applications[J]. JOURNAL OF PHYSICAL CHEMISTRY LETTERS,2017,8(18):4402-4406.
APA	Deng, Wei-Qiao.,Cheng, Pengfei.,Wu, Tao.,Zhang, Jiangwei.,Li, Yajuan.,...&Han, Keli.(2017).(C6H5C2H4NH3)(2)GeI4: A Layered Two-Dimensional Perovskite with Potential for Photovoltaic Applications.JOURNAL OF PHYSICAL CHEMISTRY LETTERS,8(18),4402-4406.
MLA	Deng, Wei-Qiao,et al."(C6H5C2H4NH3)(2)GeI4: A Layered Two-Dimensional Perovskite with Potential for Photovoltaic Applications".JOURNAL OF PHYSICAL CHEMISTRY LETTERS 8.18(2017):4402-4406.