The performance of the free-standing P(VDF-TrFE) infrared detector
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College of electrical and information engineering,Hunan Institute of Enginnering,National Laboratory of Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Sciences,National Laboratory of Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Sciences,National Laboratory of Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Sciences,National Laboratory of Infrared Physics,Shanghai Institute of Technical Physics,Chinese Academy of Sciences

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    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 1 500 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.

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TIAN Li, SUN Jing-Lan, WANG Jian-Lu, MENG Xiang-Jian, CHU Jun-Hao. The performance of the free-standing P(VDF-TrFE) infrared detector[J]. Journal of Infrared and Millimeter Waves,2015,34(6):654~657

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History
  • Received:November 19,2014
  • Revised:September 22,2015
  • Adopted:January 08,2015
  • Online: December 01,2015
  • Published: