One-step micropatterning of highly-ordered semi-crystalline poly(vinylidene fluoride-co-trifluoroethylene) films by a selective shear and detachment process

Jiyoun Chang, Hee Joon Jung, Huisu Jeong, Youn Jung Park, Jinwoo Sung, Seok Ju Kang, Gun Young Jung, Myung M. Sung, Cheolmin Park

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

We present a one-step route for micropatterning a thin ferroelectric poly(vinylidene fluoride-co-trifluoroethylene) (PVDF-TrFE) film with both molecular and microstructural crystal control over a large area. The method is based on the static mechanical shearing and subsequent detachment of a film spin coated on pre-patterned Al which has been lithographically prepared on a SiO2 substrate under appropriate thermal conditions. Selective detachment of the film in contact with the SiO2 substrate gave rise to micropatterns of PVDF-TrFE film positioned only on the Al regions. Further, the PVDF-TrFE film showed 25-nm-thick crystalline lamellae aligned perpendicular to the shear direction, wherein the c axis of the crystals was globally ordered parallel to the shear direction. The sheared and patterned PVDF-TrFE thin films are readily incorporated into non-volatile memory units of metal/ferroelectric/ metal capacitors and bottom gate-top contact field effect transistors, leading to arrays of memory devices with enhanced performance.

Original languageEnglish
Pages (from-to)98-107
Number of pages10
JournalOrganic Electronics
Volume12
Issue number1
DOIs
Publication statusPublished - 2011 Jan

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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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