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Wafer-scale, layer-controlled organic single crystals for high-speed circuit operation.


ABSTRACT: Two-dimensional (2D) layered semiconductors are a novel class of functional materials that are an ideal platform for electronic applications, where the whole electronic states are directly modified by external stimuli adjacent to their electronic channels. Scale-up of the areal coverage while maintaining homogeneous single crystals has been the relevant challenge. We demonstrate that wafer-size single crystals composed of an organic semiconductor bimolecular layer with an excellent mobility of 10 cm2 V-1 s-1 can be successfully formed via a simple one-shot solution process. The well-controlled process to achieve organic single crystals composed of minimum molecular units realizes unprecedented low contact resistance and results in high-speed transistor operation of 20 MHz, which is twice as high as the common frequency used in near-field wireless communication. The capability of the solution process for scale-up coverage of high-mobility organic semiconductors opens up the way for novel 2D nanomaterials to realize products with large-scale integrated circuits on film-based devices.

SUBMITTER: Yamamura A 

PROVIDER: S-EPMC5804585 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature

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Wafer-scale, layer-controlled organic single crystals for high-speed circuit operation.

Yamamura Akifumi A   Watanabe Shun S   Uno Mayumi M   Mitani Masato M   Mitsui Chikahiko C   Tsurumi Junto J   Isahaya Nobuaki N   Kanaoka Yusuke Y   Okamoto Toshihiro T   Takeya Jun J  

Science advances 20180202 2


Two-dimensional (2D) layered semiconductors are a novel class of functional materials that are an ideal platform for electronic applications, where the whole electronic states are directly modified by external stimuli adjacent to their electronic channels. Scale-up of the areal coverage while maintaining homogeneous single crystals has been the relevant challenge. We demonstrate that wafer-size single crystals composed of an organic semiconductor bimolecular layer with an excellent mobility of 1  ...[more]

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