Piezoelectric transducers on curved dispersive bending wave and poke-charged touch screens

Hamidreza Hoshyarmanesh, Naser Nehzat, Mehdi Salehi, Mojtaba Ghodsi, Hong Sub Lee, Hyung Ho Park

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Ferroelectric thin films of lead zirconate titanate Pb(Zr 0.52,Ti0.48)O3(PZT) and bismuth titanate Bi4Ti3O12(BiT) were prepared by photochemical metal-organic deposition as electromechanical transducers used in optoelectronic devices. Both solutions were deposited on flat and convex amorphous glass substrates to poke-charge the device or detect the touch point coordinate on new generation of free-shaped screens. The effects of optimization on UV exposure, precursor type and annealing temperature (600-800 °C) were investigated on microstructural, optical and ferroelectric properties of deposited thin films. Suppressing the non-uniformity of the film thicknesses due to repetitive deposition, actually there is no structural difference between the two types of substrates and their effects on the film properties. Polarization-voltage hysteresis loops showed relatively larger remnant polarization of Pr = 9.3 μC/cm2 and 6.1 μC/cm2 for optimized UV-irradiated PZT and BiT thin films, respectively, than uncured samples.

Original languageEnglish
Pages (from-to)870-876
Number of pages7
JournalMaterials and Manufacturing Processes
Volume29
Issue number7
DOIs
Publication statusPublished - Jul 3 2014

Keywords

  • BiT
  • Photolysis
  • Piezoelectric
  • PMOD
  • PZT
  • Touchscreen
  • Transparency
  • UV

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials
  • Industrial and Manufacturing Engineering
  • Materials Science(all)

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