Polymer blended small molecule organic field effect transistors with improved device-to-device uniformity and operational stability

Yong Hoon Kim, John E. Anthony, Sung Kyu Park

Research output: Contribution to journalArticlepeer-review

43 Scopus citations

Abstract

We report high performance organic thin-film transistors (OTFTs) with improved device-to-device uniformity and operational stability using polymer-blended small molecule organic semiconductor, 2,8-difluoro-5,11- bis(triethylsilylethynyl) anthradithiophene (diF-TESADT). The diF-TESADT blended with poly(α-methylstyrene) was spin-cast to form bottom-contact OTFTs, and an average carrier mobility of more than 0.16 cm2/V s with more uniform surface morphology and device-to-device uniformity compared to neat diF-TESADT devices were achieved. Additionally, the polymer-blended OTFTs have shown improved operational stability under gate bias-stress possibly due to blocking of ambient oxygen and moisture by vertically separated insulating matrix polymer.

Original languageEnglish
Pages (from-to)1152-1157
Number of pages6
JournalOrganic Electronics
Volume13
Issue number7
DOIs
StatePublished - Jul 2012

Bibliographical note

Funding Information:
This work was supported in part by Basic Science Research Program through a National Research Foundation of Korea (NRF) grant funded by the Ministry of Education, Science, and Technology (No. 2010-0002623 ), and also was financially supported by the Ministry of Knowledge Economy (MKE), Korea Institute for Advancement of Technology (KIAT) through the Inter-ER Cooperation Projects.

Keywords

  • Device-to-device uniformity
  • Operational stability
  • Organic field effect transistor
  • Polymer blending

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Biomaterials
  • Chemistry (all)
  • Condensed Matter Physics
  • Materials Chemistry
  • Electrical and Electronic Engineering

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