Polymer-sorted (6,5) single-walled carbon nanotubes for solution-processed low-voltage flexible microelectronics

Francesca Bottacchi, Luisa Petti, Florian Späth, Imge Namal, Gerhard Tröster, Tobias Hertel, Thomas D. Anthopoulos*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

We report on low operating voltage transistors based on polymer-sorted semiconducting (6,5) single-walled carbon nanotube (SWNT) networks processed from solution at room temperature. The (6,5) SWNTs were separated from the as-received carbon nanotubes mixture using a polyfluorene-based derivative as the sorting and dispersing polymer agent. As-prepared devices exhibit primarily p-type behavior with channel current on/off ratio >103 and hole mobility ≈2cm2 V-1 s-1. These transistor characteristics enable realization of low-voltage unipolar inverters with wide noise margins and high signal gain (>5). Polymer/(6,5) SWNT transistors were also fabricated on free-standing polyimide foils. The devices exhibit even higher hole mobility (≈8cm2 V-1 s-1) and on/off ratios (>104) while remaining fully functional when bent to a radius of 4mm.

Original languageEnglish (US)
Article number193302
JournalApplied Physics Letters
Volume106
Issue number19
DOIs
StatePublished - May 11 2015

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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