Poly(vinylidene fluoride/trifluoroethylene) in pyroelectric single-element sensors

Author

Neumann, N. ; Köhler, R. ; Hofmann, G.

Author_Institution

Inst. fuer Festkorperelektronik, Tech. Univ. Dresden, Germany

fYear

1991

fDate

25-27 Sep 1991

Firstpage

950

Lastpage

955

Abstract

Copolymer thin films can be cast by coating at a thickness of 0.8 μm to 2.5 μm on solid silicon substrates as well as on unrestrained 800 nm thin SiO₂/Si₃N₃ supporting membranes. Poling the P(VDF/TrFE) (poly(vinylidene fluoride/trifluoroethylene)) 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 are distinguished by a high specific detectivity of 3.5×10⁸ cm-Hz^1/2/W at a frequency of 10 Hz

Keywords

dielectric losses; dielectric polarisation; electrets; electric sensing devices; polymer blends; polymer films; pyroelectric devices; pyroelectricity; P(VDF/TrFE); dielectric constant; dielectric losses; electret; high spontaneous polarization; poly(vinylidene fluoride/trifluoroethylene); pyroelectric coefficient; pyroelectric single-element sensors; Biomembranes; Coatings; Detectors; Dielectric constant; Dielectric loss measurement; Polarization; Pyroelectricity; Semiconductor thin films; Silicon; Solids;

fLanguage

English

Publisher

ieee

Conference_Titel

Electrets, 1991. (ISE 7) Proceedings., 7th International Symposium on (Cat. No.91CH3029-6)

Conference_Location

Berlin

Print_ISBN

0-7803-0112-9

Type

conf

DOI

10.1109/ISE.1991.167342

Filename

167342