Pyroelectricity of Ferroelectric Vinylidene Fluoride-Oligomer-Evaporated Thin Films

Kei Noda, Kenji Ishida, Toshihisa Horiuchi, Hirofumi Yamada, Kazumi Matsushige

Research output: Contribution to journalArticle

9 Citations (Scopus)

Abstract

The pyroelectricity of ferroelectric vinylidene fluoride (VDF)-oligomer [CF3(CH2CF2)17I]-evaporated film was investigated utilizing a low-frequency sinusoidal heat source. A current profile appeared as the summation of a fundamental sine wave with a frequency of the temperature change and its harmonic responses. The pyroelectric coefficient (p) of the 600-nm-thick VDF oligomer film was estimated to be -68 μC/m2K at 37°C, whose absolute value is larger than those reported for ferroelectric polymers. Various characteristics such as a large |p|, a small dielectric constant and suitability for preparation of thinner films suggest that the VDF oligomer is a promising material for application in pyroelectric thin-film infrared detectors.

Original languageEnglish
Pages (from-to)L1334-L1336
JournalJapanese Journal of Applied Physics, Part 2: Letters
Volume42
Issue number11 A
Publication statusPublished - 2003 Nov 1
Externally publishedYes

Keywords

  • Evaporated films
  • Infrared detectors
  • Pyroelectricity
  • Sinusoidal heat source
  • Vinylidene fluoride oligomer

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy (miscellaneous)
  • Physics and Astronomy(all)

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