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      Trends in molecular design strategies for ambient stable n-channel organic field effect transistors

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      Author
      Dhar, J.
      Salzner, U.
      Patil, S.
      Date
      2017
      Source Title
      Journal of Materials Chemistry C
      Print ISSN
      2050-7534
      Publisher
      Royal Society of Chemistry
      Volume
      5
      Issue
      30
      Pages
      7404 - 7430
      Language
      English
      Type
      Review
      Item Usage Stats
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      Abstract
      In recent years, organic semiconducting materials have enabled technological innovation in the field of flexible electronics. Substantial optimization and development of new π-conjugated materials has resulted in the 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 an 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 exhibits 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 the thermodynamic stability of anions and summarizing the recent progress in the development of air stable electron transporting organic semiconductors. Molecular design strategies are analysed with theoretical investigations.
      Keywords
      Atmospheric movements
      Display devices
      Doping (additives)
      Electron transport properties
      Electrons
      Flexible electronics
      Organic field effect transistors
      Rectifying circuits
      Thermodynamic stability
      Atmospheric stability
      Electron transporting
      N-channel organic semiconductors
      Organic semiconducting materials
      Pi-conjugated materials
      Technological innovation
      Theoretical investigations
      Transient photocurrents
      Field effect transistors
      Permalink
      http://hdl.handle.net/11693/38176
      Published Version (Please cite this version)
      http://dx.doi.org/10.1039/c6tc05467f
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