New liquid crystalline solution processible organic semiconductors and their performance in field effect transistors

Maxim N. Shkunov; Weimin Zhang; David Graham; David Sparrowe; Martin Heeney; Mark Giles; Steve Tierney; Clare Bailey; Iain McCulloch; Theo Kreouzis

doi:10.1117/12.505831

17 November 2003 New liquid crystalline solution processible organic semiconductors and their performance in field effect transistors

Maxim N. Shkunov, Weimin Zhang, David Graham, David Sparrowe, Martin Heeney, Mark Giles, Steve Tierney, Clare Bailey, Iain McCulloch, Theo Kreouzis

Author Affiliations +

Proceedings Volume 5217, Organic Field Effect Transistors II; (2003) https://doi.org/10.1117/12.505831
Event: Optical Science and Technology, SPIE's 48th Annual Meeting, 2003, San Diego, California, United States

Abstract

New polymerisable liquid crystalline organic semiconductors based on small molecule "reactive mesogens" are reported. These molecules, comprising p-conjugated cores with reactive endgroups, were designed, synthesised then solution processed into thin films. The mesogenic morphology was attained thermally and fixed through a post fabrication photopolymerisation reaction. Thermal, optical and electrical properties of these thin films were characterised to reveal details of morphology and molecular orientation. Both bulk (time-of-flight) and surface (field-effect) charge carrier mobilities were measured. The relationship between molecular structure, corresponding macrostructure processability and charge mobility is discussed. Fabrication and characterisation of field-effect transistors based on reactive mesogens are presented and discussed.

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Maxim N. Shkunov, Weimin Zhang, David Graham, David Sparrowe, Martin Heeney, Mark Giles, Steve Tierney, Clare Bailey, Iain McCulloch, and Theo Kreouzis "New liquid crystalline solution processible organic semiconductors and their performance in field effect transistors", Proc. SPIE 5217, Organic Field Effect Transistors II, (17 November 2003); https://doi.org/10.1117/12.505831

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