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Trends in Molecular Design Strategies for Ambient Stable n-Channel Organic Field Effect Transistors

Abstract

In recent years, organic semiconducting materials enabled technological innovation in the field of flexible electronics. Substantial optimization and development of new π-conjugated materials resulted into demonstration of several practical devices, particularly in displays and photoreceptors. However, applications of organic semiconductors in bipolar junction devices, e.g. rectifiers and inverters are limited due to imbalance in charge transport. The performance of p-channel organic semiconducting materials exceeds that of electron transport. In addition, electron transport in π-conjugated materials exhibit poorer atmospheric stability and dispersive transient photocurrents due to extrinsic carrier trapping. Thus development of air stable n-channel conjugated materials is required. New classes of materials with delocalized n-doped states are under development, aiming at improvement of the electron transport properties of organic semiconductors. In this review, we highlight the basic tenets related to the stability of n-channel organic semiconductors, primarily focusing on thermodynamic stability of anions and summarizing the recent progress in the development of air stable electron transporting organic semiconductors. Molecular design strategies are analyzed with theoretical investigations.

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Publication details

The article was received on 19 Dec 2016, accepted on 15 Jun 2017 and first published on 16 Jun 2017


Article type: Review Article
DOI: 10.1039/C6TC05467F
Citation: J. Mater. Chem. C, 2017, Accepted Manuscript
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    Trends in Molecular Design Strategies for Ambient Stable n-Channel Organic Field Effect Transistors

    S. A. Patil, U. Salzner and J. Dhar, J. Mater. Chem. C, 2017, Accepted Manuscript , DOI: 10.1039/C6TC05467F

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