The performance of the free-standing P(VDF-TrFE) infrared detector

  • Li Tian
  • , Jing Lan Sun
  • , Jian Lu Wang
  • , Xiang Jian Meng
  • , Jun Hao Chu

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Free-standing infrared detector with an Al/P(VDF-TrFE)/NiCr structure was fabricated. A semitransparent NiCr metal thin film on top of the device served as both electrode and absorption layer. The experimental results reveal that P(VDF-TrFE) has good ferroelectric and pyroelectric properties with remanent polarization 7.1 μC/cm2 and pyroelectric coefficient 27 μC/m2K respectively. The voltage responsivity RV and detectivity D* of the device at 10 Hz with blackbody source temperature at 500 K are around 1500 V/W and 5×107 cmHz1/2W-1, respectively. The thermal conductance of unit area to the environment and absorption of the detector were estimated to be 2.5×10-3 W/cm2K and 0.1, respectively, from the frequency dependence of the voltage responsivity. Using the detector, the thermal image of target was obtained.

Original languageEnglish
Pages (from-to)654-657
Number of pages4
JournalHongwai Yu Haomibo Xuebao/Journal of Infrared and Millimeter Waves
Volume34
Issue number6
DOIs
StatePublished - 1 Dec 2015
Externally publishedYes

Keywords

  • Infrared detector
  • P(VDF-TrFE) film
  • Voltage responsivity

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