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Pyroelectricity in alternating ultrathin organized molecular films incorporating barium ions

  • Shihong Ma*
  • , Shuhong Li
  • , Xingze Lu
  • , Wencheng Wang
  • , Genshui Wang
  • , Pulin Liu
  • , Shaoling Guo
  • , Junhao Chu
  • *此作品的通讯作者
  • Fudan University
  • Chinese Academy of Sciences

科研成果: 期刊稿件会议文章同行评审

摘要

Pyroelectric properties in alternating DAEP/NC Langmuir Blodgett (LB) films and effects of incorporating the barium cations on pyroelectric behaviors have been investigated Its pyroelectric coefficient measured is found to be 58μC m-2 K-1 at 300K. The dielectric properties have been measured and used to determine the figures of merit in thermal devices. Relative permittivity εr and dielectric loss values tanδ of pyroelectric films (in the range of 1KHz - 100KHz) are 2.34 ∼ 1.96 and 0.08 ∼ 0.04, respectively. These data give a maximum pyroelectric figure of merit of 150μC m-2 K-1 in the alternating LB films incorporating barium ions. The effects of different deposition on pyroelectric properties are also discussed in this paper. It is indicated that the alternating LB films is promising in the field of pyroelectricity and pyroelectric infrared detector.

源语言英语
页(从-至)107-112
页数6
期刊Proceedings of SPIE - The International Society for Optical Engineering
4795
DOI
出版状态已出版 - 2002
已对外发布
活动Materials for Infrared Detectors II - Seattle, WA, 美国
期限: 8 7月 20029 7月 2002

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