Pyroelectric nanocomposite thin films containing triglycine sulfate nanocrystals with uniform polar orientation

M. Nitzani; R. Yasinov; S. Berger

doi:10.1117/12.825670

27 August 2009 Pyroelectric nanocomposite thin films containing triglycine sulfate nanocrystals with uniform polar orientation

M. Nitzani, R. Yasinov, S. Berger

Author Affiliations +

Proceedings Volume 7419, Infrared Systems and Photoelectronic Technology IV; 741906 (2009) https://doi.org/10.1117/12.825670
Event: SPIE Photonic Devices + Applications, 2009, San Diego, California, United States

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.

Citation Download Citation

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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