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2D Single‐Crystalline Molecular Semiconductors with Precise Layer Definition Achieved by Floating‐Coffee‐Ring‐Driven Assembly
Author(s) -
Wang Qijing,
Qian Jun,
Li Yun,
Zhang Yuhan,
He Daowei,
Jiang Sai,
Wang Yu,
Wang Xinran,
Pan Lijia,
Wang Junzhuan,
Wang Xizhang,
Hu Zheng,
Nan Haiyan,
Ni Zhenhua,
Zheng Youdou,
Shi Yi
Publication year - 2016
Publication title -
advanced functional materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 6.069
H-Index - 322
eISSN - 1616-3028
pISSN - 1616-301X
DOI - 10.1002/adfm.201600304
Subject(s) - materials science , semiconductor , organic semiconductor , van der waals force , nanotechnology , yield (engineering) , bilayer , ring (chemistry) , fabrication , layer (electronics) , crystal (programming language) , electronics , optoelectronics , single crystal , molecule , crystallography , organic chemistry , composite material , computer science , chemistry , medicine , biochemistry , alternative medicine , pathology , membrane , programming language
2D organic materials with in‐plane van der Waals forces among molecules have unique characteristics that ensure a brilliant future for multifunctional applications. Soluble organic semiconductors can be used to achieve low‐cost and high‐throughput manufacturing of electronic devices. However, achieving solution‐processed 2D single‐crystalline semiconductors with uniform morphology remains a substantial challenge. Here, the fabrication of 2D molecular single‐crystal semiconductors with precise layer definition by using a floating‐coffee‐ring‐driven assembly is presented. In particular, bilayer molecular films exhibit single‐crystalline features with atomic smoothness and high film uniformity over a large area; field‐effect transistors yield average and maximum carrier mobilities of 4.8 and 13.0 cm 2 V −1 s −1 , respectively. This work demonstrates the strong potential of 2D molecular crystals for low‐cost, large‐area, and high‐performance electronics.