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(C6H5C2H4NH3)(2)GeI4: A Layered Two-Dimensional Perovskite with Potential for Photovoltaic Applications
Cheng, Pengfei1,2; Wu, Tao1,3; Zhang, Jiangwei4; Li, Yajuan1,2; Liu, Junxue1; Jiang, Lei1; Mao, Xin1,2; Lu, Rui-Feng3; Deng, Wei-Qiao1; Han, Keli1
Source PublicationJOURNAL OF PHYSICAL CHEMISTRY LETTERS
2017-09-21
DOI10.1021/acs.jpclett.7b01985
Volume8Issue:18Pages:4402-4406
Indexed BySCI
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences ; Technology
WOS SubjectChemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical
WOS Research AreaChemistry ; Science & Technology - Other Topics ; Materials Science ; Physics
WOS KeywordORGANIC-INORGANIC PEROVSKITES ; METAL-HALIDE PEROVSKITES ; AUGMENTED-WAVE METHOD ; OPTICAL-PROPERTIES ; SEMICONDUCTORS ; TRANSITIONS ; COMPOUND ; DESIGN
AbstractRecently, 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.
Language英语
WOS IDWOS:000411781900013
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/150102
Collection中国科学院大连化学物理研究所
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Mol React Dynam, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100039, Peoples R China
3.Nanjing Univ Sci & Technol, Dept Appl Phys, Nanjing 210094, Jiangsu, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Gold Catalysis Res Ctr, Dalian 116023, Peoples R China
Recommended Citation
GB/T 7714
Cheng, Pengfei,Wu, Tao,Zhang, Jiangwei,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 Cheng, Pengfei.,Wu, Tao.,Zhang, Jiangwei.,Li, Yajuan.,Liu, Junxue.,...&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 Cheng, Pengfei,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.
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