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

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

doi:10.1117/12.505831

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

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

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

8 Scopus citations

Abstract

New polymerisable liquid crystalline organic semiconductors based on small molecule "reactive mesogens" are reported. These molecules, comprising π-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.

Original language	English (US)
Title of host publication	Proceedings of SPIE - The International Society for Optical Engineering
Pages	181-192
Number of pages	12
DOIs	https://doi.org/10.1117/12.505831
State	Published - Dec 1 2003
Externally published	Yes

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Shkunov, M., Zhang, W., Graham, D., Sparrowe, D., Heeney, M., Giles, M., Tierney, S., Bailey, C., McCulloch, I., & Kreouzisi, T. (2003). New liquid crystalline solution processable organic semiconductors and their performance in field effect transistors. In Proceedings of SPIE - The International Society for Optical Engineering (pp. 181-192) https://doi.org/10.1117/12.505831

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abstract = "New polymerisable liquid crystalline organic semiconductors based on small molecule {"}reactive mesogens{"} are reported. These molecules, comprising π-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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AU - Zhang, Weimin

AU - Graham, David

AU - Sparrowe, David

AU - Heeney, Martin

AU - Giles, Mark

AU - Tierney, Steve

AU - Bailey, Clare

AU - McCulloch, Iain

AU - Kreouzisi, Theo

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N2 - New polymerisable liquid crystalline organic semiconductors based on small molecule "reactive mesogens" are reported. These molecules, comprising π-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.

AB - New polymerisable liquid crystalline organic semiconductors based on small molecule "reactive mesogens" are reported. These molecules, comprising π-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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New liquid crystalline solution processable organic semiconductors and their performance in field effect transistors

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