The University of Southampton
University of Southampton Institutional Repository

Morphology control via dual solvent crystallization for high-mobility functionalized pentacene-blend thin film transistors

Morphology control via dual solvent crystallization for high-mobility functionalized pentacene-blend thin film transistors
Morphology control via dual solvent crystallization for high-mobility functionalized pentacene-blend thin film transistors
We present an approach to improving the performance of solution processed organic semiconductor transistors based on a dual solvent system. We here apply this to a blend containing the ?-conjugated small molecule 6,13 bis(triisopropylsilylethynyl) pentacene (TIPS-pentacene) and polystyrene, which acts as an inert binder. Using a semiconductor-binder solution of two solvents, where the main solvent is a better solvent of the small molecule and second solvent is a better solvent of the polymer, crystal morphologies can be altered and transistor mobilities increased by almost an order of magnitude. In this way, air-ambient and solution-processed transistors with linear and saturation mobilities higher than 1 cm2 V?1 s?1 have been fabricated. We discuss how the solubility properties of the formulation components can be used to identify solvent candidates that promote an efficient self-assembly of the small molecule.
11232-11238
Lada, Maria
6c194d2a-d070-48fe-a6e4-ad8539c25686
Starink, Marco J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
Carrasco, Miguel
a2f6d4c8-ce67-433d-a8e0-d20178258baf
Chen, Lichun
6d7912da-40ac-4c9d-ae69-5d7880e9dcff
Miskiewicz, Pawel
7b97097f-5703-4291-97a3-af29ac55a30a
Brookes, Paul
0eaa288b-8647-4b75-af94-42fe73aca076
Obarowska, Margaret
9e7fc836-5962-4e0c-b2c2-eb29f1e989d7
Smith, David C.
d9b2c02d-b7ea-498b-9ea1-208a1681536f
Lada, Maria
6c194d2a-d070-48fe-a6e4-ad8539c25686
Starink, Marco J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
Carrasco, Miguel
a2f6d4c8-ce67-433d-a8e0-d20178258baf
Chen, Lichun
6d7912da-40ac-4c9d-ae69-5d7880e9dcff
Miskiewicz, Pawel
7b97097f-5703-4291-97a3-af29ac55a30a
Brookes, Paul
0eaa288b-8647-4b75-af94-42fe73aca076
Obarowska, Margaret
9e7fc836-5962-4e0c-b2c2-eb29f1e989d7
Smith, David C.
d9b2c02d-b7ea-498b-9ea1-208a1681536f

Lada, Maria, Starink, Marco J., Carrasco, Miguel, Chen, Lichun, Miskiewicz, Pawel, Brookes, Paul, Obarowska, Margaret and Smith, David C. (2011) Morphology control via dual solvent crystallization for high-mobility functionalized pentacene-blend thin film transistors. Journal of Materials Chemistry, 21 (30), 11232-11238. (doi:10.1039/C1JM11119A).

Record type: Article

Abstract

We present an approach to improving the performance of solution processed organic semiconductor transistors based on a dual solvent system. We here apply this to a blend containing the ?-conjugated small molecule 6,13 bis(triisopropylsilylethynyl) pentacene (TIPS-pentacene) and polystyrene, which acts as an inert binder. Using a semiconductor-binder solution of two solvents, where the main solvent is a better solvent of the small molecule and second solvent is a better solvent of the polymer, crystal morphologies can be altered and transistor mobilities increased by almost an order of magnitude. In this way, air-ambient and solution-processed transistors with linear and saturation mobilities higher than 1 cm2 V?1 s?1 have been fabricated. We discuss how the solubility properties of the formulation components can be used to identify solvent candidates that promote an efficient self-assembly of the small molecule.

Text
Lada et al 2011.pdf - Version of Record
Download (437kB)

More information

Published date: 2011
Additional Information: We show how to achieve TIPS-pentacene-based transistors with record mobilities up to 1.8 cm2/Vs by exploiting differential solubility properties in a two solute, two solvent (i.e. quaternary) solution.
Organisations: Engineering Mats & Surface Engineerg Gp

Identifiers

Local EPrints ID: 198217
URI: http://eprints.soton.ac.uk/id/eprint/198217
PURE UUID: 90082bfa-6845-4449-a2cd-07f71ed84bf3

Catalogue record

Date deposited: 03 Oct 2011 11:10
Last modified: 14 Mar 2024 04:12

Export record

Altmetrics

Contributors

Author: Maria Lada
Author: Miguel Carrasco
Author: Lichun Chen
Author: Pawel Miskiewicz
Author: Paul Brookes
Author: Margaret Obarowska
Author: David C. Smith

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×