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 journalArticlepeer-review


Ferroelectric thin films of lead zirconate titanate Pb(Zr0.52,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 P r = 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
Issue number7
Publication statusPublished - 7 Jul 2014


  • BiT
  • photolysis
  • piezoelectric
  • PMOD
  • PZT
  • touchscreen
  • transparency
  • UV


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