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High Ambipolar and Balanced Carrier Mobility in Regioregular Poly(3-hexylthiophene)

By SA Choulis, Y Kim, J Nelson, D D Bradley, M Giles, M Shkunov and I McCulloch

Abstract

<p>The carrier transport of carefully purified regioregular poly(3-hexylthiophene) films was studied using time-of-flight photocurrent measurements. The authors find balanced ambipolar transport with a room-temp. mobility for holes of 3 * 10-4 cm2 V-1 s-1 and for electrons of 1.5 * 10-4 cm2 V-1 s-1 at elec. fields &gt;=105 V/cm. The transport is relatively field independent and weakly temp. dependent, pointing to a high degree of chem. regioregularity and purity. These factors make poly(3-hexylthiophene) attractive for use in a range of electronic applications.</p

Publisher: AIP Publishing
Year: 2004
DOI identifier: 10.1063/1.1805175
OAI identifier: oai:epubs.surrey.ac.uk:185

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