Controlling the field-effect mobility of regioregular polythiophene by changing the molecular weight

R. Joseph Kline, Michael D. McGehee*, Ekaterina N. Kadnikova, Jinsong Liu, Jean M J Fréchet

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

856 Scopus citations

Abstract

The molecular weight (MW) of regioregular poly(3-hexyl-thiophene) (RR P3HT) has a substantial effect on the way that the chains pack on each other, and that this, in turn, causes the mobility to vary by at least four orders of magnitude. The given data does not show that disordered films are intrinsically better than highly crystalline films. Yet, it does show that factors other than crystallinity has a strong effect on mobility, and that these other factors must be considered when optimizing polymer devices.

Original languageEnglish (US)
Pages (from-to)1519-1522
Number of pages4
JournalAdvanced Materials
Volume15
Issue number18
DOIs
StatePublished - Sep 16 2003
Externally publishedYes

ASJC Scopus subject areas

  • Materials Science(all)

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