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Issue 33, 2019
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Solution-processed thin films of a charge transfer complex for ambipolar field-effect transistors

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Abstract

Charge transfer (CT) complexes are attracting great interest as potential candidate ambipolar semiconductors. However, their application in organic field-effect transistors (OFETs) has been limited to ideal single crystals or to films prepared by co-evaporation of their components, hindering their potential for real applications. Here, we report the preparation of thin films of the CT complex DBTTF–TCNQ using a simple solution shearing technique. This was achieved by blending the active materials with polystyrene to promote film processability, reproducibility and stability. Infrared and Raman spectroscopies were used, respectively, for charge transfer degree estimation and structural identification of the films. The resulting OFET devices, fabricated and measured completely under environmental conditions, exhibited an ambipolar field-effect. Thus, this work opens new perspectives for the application of CT salts in electronic devices.

Graphical abstract: Solution-processed thin films of a charge transfer complex for ambipolar field-effect transistors

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Publication details

The article was received on 07 Jun 2019, accepted on 30 Jul 2019 and first published on 30 Jul 2019


Article type: Paper
DOI: 10.1039/C9TC03064F
J. Mater. Chem. C, 2019,7, 10257-10263

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    Solution-processed thin films of a charge transfer complex for ambipolar field-effect transistors

    T. Salzillo, A. Campos and M. Mas-Torrent, J. Mater. Chem. C, 2019, 7, 10257
    DOI: 10.1039/C9TC03064F

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