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27 August 2009 Pyroelectric nanocomposite thin films containing triglycine sulfate nanocrystals with uniform polar orientation
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Abstract
A new pyroelectric polar nanocomposite thin film is presented. A dense array of aluminium oxide cylindrical nanopores is used as a template to grow pyroelectric nano-crystals of TriGlycine Sulfate (TGS). The crystals are grown inside nanopores having an average diameter of 14±4nm and a length of 0.5 micron. The crystals are grown with a preferred crystallographic orientation having their polar axis [010] aligned in vertical to the film plane. The pyroelectric response at different temperatures is measured using the dynamic method. The dielectric characterization reveals resistivity of about 1E-9 ohm-m, dielectric loss (tan(δ)) of about 0.03, and relative dielectric permittivity of about 10 at room temperature which increases to a maximum value at the ferroelectric-paraelectric phase transition. The pyroelectric coefficient of the film is about 3.5 μC/m2K and the pyroelectric voltage figure of merit is about 40 kVm-1K -1.
© (2009) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
M. Nitzani, R. Yasinov, and S. Berger "Pyroelectric nanocomposite thin films containing triglycine sulfate nanocrystals with uniform polar orientation", Proc. SPIE 7419, Infrared Systems and Photoelectronic Technology IV, 741906 (27 August 2009); https://doi.org/10.1117/12.825670
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