Time-of-flight measurements and vertical transport in a high electron-mobility polymer

James C. Blakesley*, Marcel Schubert, Robert Steyrleuthner, Zhihua Chen, Antonio Facchetti, Dieter Neher

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

30 Scopus citations


We investigate charge transport in a high-electron mobility polymer, poly(N,N-bis 2-octyldodecyl-naphthalene-1,4,5,8-bis dicarboximide-2,6-diyl-alt- 5,5-2,2-bithiophene) [P(NDI2OD-T2), Polyera ActivInk N2200]. Time-of-flight measurements reveal electron mobilities approaching those measured in field-effect transistors, the highest ever recorded in a conjugated polymer using this technique. The modest temperature dependence and weak dispersion of the transients indicate low energetic disorder in this material. Steady-state electron-only current measurements reveal a barrier to injection of about 300 meV. We propose that this barrier is located within the P(NDI2OD-T2) film and arises from molecular orientation effects.

Original languageEnglish (US)
Article number183310
JournalApplied Physics Letters
Issue number18
StatePublished - Oct 31 2011

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)


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