Flexible Organic Transistors with Controlled Nanomorphology

Byoung Hoon Lee, Ben B.Y. Hsu, Shrayesh N. Patel, John Labram, Chan Luo, Guillermo C. Bazan, Alan J. Heeger

Research output: Contribution to journalArticlepeer-review

78 Scopus citations

Abstract

We report the controlled nanomorphology of semiconducting polymers on chemically and mechanically stable nanogrooved polymer substrates. By employing silicon dioxide thin films with finely adjusted thicknesses on nanogrooved polymer substrates, semiconducting polymer thin films oriented and aligned along the nanogrooves were obtained. Organic field-effect transistors (OFETs) fabricated from the oriented semiconducting polymer, poly[4-(4,4-dihexadecyl-4H-cyclopenta[1,2-b:5,4-b′]dithiophen-2-yl)-alt-[1,2,5]thiadiazolo-[3,4-c]pyridine] (PCDTPT), yielded saturation hole mobilities as high as 19.3 cm2 V-1s-1, and the flexible plastic transistors demonstrated excellent mechanical stability under various bending conditions. These results represent important progress for solution-processed flexible OFETs and demonstrate that directed self-assembly of semiconducting polymers can be achieved by soft nanostructures.

Original languageEnglish
Pages (from-to)314-319
Number of pages6
JournalNano Letters
Volume16
Issue number1
DOIs
StatePublished - 13 Jan 2016

Keywords

  • atomic layer deposition
  • directed self-assembly
  • Flexible organic field-effect transistor
  • nanoimprint
  • nanomorphology control
  • semiconducting polymer

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