Anisotropic mobility of small molecule-polymer blend channel in organic transistor: Characterization of channel materials and orientation

Ji Hoon Park, Hyunjin Lim, Hyeonsik Cheong, Kyu Min Lee, Hyun Chul Sohn, Gyubaek Lee, Seongil Im

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

We report on the anisotropic properties of solution-processed thin-film transistors (TFTs) fabricated by the vertical flowing of the viscous 6,13-bis(triisopropylsilylethynyl) pentacene (TIPS-pentacene) and isotactic (i-) poly-(methyl methacrylate) (PMMA) blend. During film formation processes, lateral crystalline growth of TIPS-pentacene and TIPS-pentacene/i-PMMA phase-separation were observed. Such anisotropic crystallization of TIPS-pentacene channel caused anisotropic mobility with respect to the channel orientation, so that it could be used for composing of a logic inverter where two TFTs with different channel orientations were serially connected.

Original languageEnglish
Pages (from-to)1250-1254
Number of pages5
JournalOrganic Electronics
Volume13
Issue number7
DOIs
Publication statusPublished - 2012 Jul

Bibliographical note

Funding Information:
The authors acknowledge the financial support from KOSEF (NRL program, No. 2011-0000375), the 21st Century Frontier R&D Program funded by the MKE (Information Display R&D center, F0004022-2011), and Brain Korea 21 Project. H. Cheong thanks the Midcareer Researcher Program through NRF Grant funded by the MEST (No. 2011-0017605).

All Science Journal Classification (ASJC) codes

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

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