Micro-structure-mobility correlation in self-organised, conjugated polymer field-effect transistors

H. Sirringhaus, P.J. Brown, R.H. Friend, M.M. Nielsen, K. Bechgaard, B.M.W. Langeveld-Voss, A.J.H. Spiering, R.A.J. Janssen, E.W. Meijer

Research output: Contribution to journalArticleAcademicpeer-review

131 Citations (Scopus)

Abstract

We have investigated the correlation between polymer microstructure and charge carrier mobility in high-mobility, self-organised field-effect transistors of poly-3-hexyl-thiophene (P3HT). Two different preferential orientations of the microcrystalline P3HT domains with respect to the substrate have been identified by X-ray diffraction, for which charge carrier mobilities differ by a factor >100. High mobilities of 0.1 cm2/V s reflect efficient interchain transport along the direction of p–p stacking. The results provide a firm basis for exploring supramolecular self-organisation to enhance the charge transport properties of conjugated polymer field-effect devices.
Original languageEnglish
Pages (from-to)129-132
Number of pages3
JournalSynthetic Metals
Volume111-112
Issue number1-2
DOIs
Publication statusPublished - 2000

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