Abstract
Abstract Copolymer thin films can be cast by coating a thickness of 0.8 μm to 2.5 μm on solid silicon substrates as well as on unrestrained 800 nm thin SiO2/Si3N4 supporting membranes. By poling the P(VDF/TrFE) at about 140 V/μm, a high spontaneous polarization can be obtained without any stretching process. Measurements of dielectric constant, dielectric losses and pyroelectric coefficient confirm the ideal nature of these materials for pyroelectric detectors. Built-up single element detectors distinguish themselves by a high specific detectivity D* of 2 · 108 cm√Hz/W at a frequency of 10 Hz.
Published Version
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