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What could be the Highest Hopping Mobility in Organic Thin-Film Transistors?

Published online by Cambridge University Press:  20 June 2016

Varsha Rani ,
Akanksha Sharma  and
Subhasis Ghosh
Varsha Rani
Affiliation:
School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110067, INDIA
Akanksha Sharma
Affiliation:
School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110067, INDIA
Subhasis Ghosh*
Affiliation:
School of Physical Sciences, Jawaharlal Nehru University, New Delhi-110067, INDIA
*
*(Email: subhasis.ghosh.jnu@gmail.com)
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Abstract

Charge transport properties of pentacene have been investigated by a joint experimental and theoretical study. The growth of pentacene on the substrates shows mainly two different polymorphic phases, a bulk phase and a thin-film phase. The thin-film phase is crucial for the charge transport in two-terminal and three-terminal devices such as organic Schottky diodes and organic thin film transistors, respectively. Experimentally, mobility in two-terminal devices is less by five orders of magnitude than that in three-terminal devices. We show here that this difference can be explained on the basis of strong electronic coupling between molecular dimers located in the ab-plane and relatively weak coupling between the planes (along the c-axis).

Keywords

electrical propertiesmorphologythin film
Type
Articles
Information
MRS Advances , Volume 1 , Issue 38: Materials Design , 2016 , pp. 2659 - 2664
Copyright
Copyright © Materials Research Society 2016 

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References

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