Electric characteristics of langmuir-blodgett ferroelectric polymers film: high pyroelectric coefficient and low dielectric constant

Pu Feng Liu*, Jian Lu Wang, Li Tian, Xiang Jian Meng, Jun Hao Chu

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The relative dielectric constant ε' and pyroelectric coefficient p of ferroelectric poly(vinylidene fluoride-trifluoroethylene) polymers P(VDF-TrFE) films grown on flexible substrates by Langmuir-Blodgett (LB) technique were measured, and room temperature figure of merit was obtained as 1.4 Pa-1/2 at 1kHz. The result implies that LB P(VDF-TrFE) copolymer films are potential materials for pyroelectric detectors. This enhancement of figure of merit could be attributed to good crystallinity and highly planar ordered molecular chains in the LB films.

Original languageEnglish
Pages (from-to)401-404+409
JournalHongwai Yu Haomibo Xuebao/Journal of Infrared and Millimeter Waves
Volume28
Issue number6
DOIs
StatePublished - Dec 2009
Externally publishedYes

Keywords

  • Ferroelectric copolymer film
  • Figure of merit
  • Langmuir-Blodgett film

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