Photopatternable, highly conductive and low work function polymer electrodes for high-performance n-type bottom contact organic transistors

Kipyo Hong, Se Hyun Kim, Chanwoo Yang, Tae Kyu An, Hyojung Cha, Chanjun Park, Chan Eon Park

Research output: Contribution to journalArticlepeer-review

23 Scopus citations

Abstract

We demonstrate the use of n-type N,N′-ditridecyl-3,4,9,10- perylenetetracarboxylic diimide (PTCDI-C13) bottom contact organic field-effect transistors that employ photopatternable highly conductive poly(3,4- ethylenedioxythiophene):tosylate (PEDOT:Tos) source/drain electrodes characterized by a very low work function (4.3 eV). Due to the low work function of this material, the electron injection barrier between PTCDI-C13 and PEDOT:Tos was 0.25 eV lower than that between PTCDI-C13 and gold. The low injection barrier reduced the contact resistance, yielding a high field effect mobility in transistors based on PEDOT:Tos (0.145 cm2/Vs); the field effect mobility was 16 times higher than that in transistors based on gold (0.009 cm2/Vs).

Original languageEnglish
Pages (from-to)516-519
Number of pages4
JournalOrganic Electronics
Volume12
Issue number3
DOIs
StatePublished - Mar 2011

Keywords

  • Conductive polymer
  • Low work function
  • Source/drain electrodes
  • n-Type organic field-effect transistor

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