Passive amplification of the pyroelectric current in thin films on a heat-conducting substrate

Journal Article · Mon Nov 15 00:00:00 EST 2010 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776110110129· OSTI ID:21455259

Yablonskii, S. V., E-mail: yablonskii2005@yandex.r ^[1]; Soto-Bustamante, E. A., E-mail: [e-mail] ^[2]

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1. Russian Academy of Sciences, Shubnikov Institute of Crystallography (Russian Federation)
2. Universidad de Chile 1058 (Chile)

We show both theoretically and experimentally that passive amplification of the pyroelectric current takes place when modulated radiation is recorded by a pyroelectric detector in some range of modulation frequencies. The amplification effect manifests itself in the fact that the current generated by a thin pyroelectric film lying on a massive heat-conducting substrate exceeds that in a freely suspended film. We use a ferroelectric 70:30 P(VDF-TrFE) copolymer, a crystalline guanidine pyroelectric, and a 70:30 composition of an achiral liquid-crystal polymer and its monomer PM6R14n-M6R14n to illustrate the frequency dependence of the pyroelectric current.

• OSTI ID: 21455259
• Journal Information: Journal of Experimental and Theoretical Physics, Vol. 111, Issue 5; Other Information: DOI: 10.1134/S1063776110110129; Copyright (c) 2010 Pleiades Publishing, Ltd.; ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
AMPLIFICATION
COPOLYMERS
ELECTRIC CURRENTS
FERROELECTRIC MATERIALS
FREQUENCY DEPENDENCE
LIQUID CRYSTALS
MODULATION
MONOMERS
PYROELECTRIC DETECTORS
PYROELECTRIC EFFECT
SUBSTRATES
THIN FILMS
CRYSTALS
CURRENTS
DIELECTRIC MATERIALS
FILMS
FLUIDS
LIQUIDS
MATERIALS
MEASURING INSTRUMENTS
ORGANIC COMPOUNDS
ORGANIC POLYMERS
POLYMERS
RADIATION DETECTORS