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题名: The Impact of Interlayer Electronic Coupling on Charge Transport in Organic Semiconductors: A Case Study on Titanylphthalocyanine Single Crystals
作者: Zhang, Zongpeng1; Jiang, Lang2; Cheng, Changli4; Zhen, Yonggang1; Zhao, Guangyao1; Geng, Hua1; Yi, Yuanping1; Li, Liqiang3; Dong, Huanli1; Shuai, Zhigang4; Hu, Wenping1, 5, 6
关键词: charge transport ; crystal polymorphs ; organic semiconductors ; phthalocyanine
刊名: ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
发表日期: 2016-04-18
卷: 55, 期:17, 页:5206-5209
收录类别: SCI
英文摘要: Traditionally, it is believed that three-dimensional transport networks are preferable to those of lower dimensions. We demonstrate that inter-layer electronic couplings may result in a drastic decrease of charge mobilities by utilizing field-effect transistors (FET) based on two phases of titanyl phthalocyanine (TiOPc) crystals. The -phase crystals with electronic couplings along two dimensions show a maximum mobility up to 26.8cm(2)V(-1)s(-1). In sharp contrast, the -phase crystals with extra significant inter-layer electronic couplings show a maximum mobility of only 0.1cm(2)V(-1)s(-1). Theoretical calculations on the bulk crystals and model slabs reveal that the inter-layer electronic couplings for the -phase devices will diminish remarkably the device charge transport abilities owing to the coupling direction perpendicular to the current direction. This work provides new insights into the impact of the dimensionality and directionality of the packing arrangements on charge transport in organic semiconductors.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/36019
Appears in Collections:有机固体实验室_期刊论文

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作者单位: 1.Chinese Acad Sci ICCAS, Inst Chem, Beijing 100190, Peoples R China
2.Univ Cambridge, Cavendish Lab, JJ Thomson Ave, Cambridge CB3 0HE, England
3.Chinese Acad Sci, Suzhou Inst Nanotech & Nanobion, Adv Nanomat Div, Suzhou 215123, Peoples R China
4.Tsinghua Univ, Dept Chem, Beijing 100084, Peoples R China
5.Tianjin Univ, Sch Sci, Key Lab Mol Optoelect Sci, Tianjin 300072, Peoples R China
6.Collaborat Innovat Ctr Chem Sci & Engn, Tianjin 300072, Peoples R China
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