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Proceedings Paper

Parameters Controlling The Design Of A Pyroelectric PVDF Matrix Array
Author(s): Vui V. Pham; Daniel Esteve; Essaid Bousbiat; Jean Farre; Rene Leguerre; Jean Simonne
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Paper Abstract

PVDF, mostly investigated for its piezoelectric properties has been also demonstrated as a promising candidate for pyroelectric detection; the challenge is to assess how far its performance can be brought to set the chance of development of PVDF infrared detectors to civilian applications with regard to other conventional pyroelectrics. We have therefore elaborated discrete elements, linear arrays and test structures on 9 to 40 μm thick materials to check the best conditions to be fulfilled in order to design a bidimensional array, with 8 x 8 elements to begin with. The poling process carried out on a biaxially strdched material with a slowly increa-sing a.c. electric field at room tempe5ature (the Bauer's method) insures the largest remanent polarization (around 10 μC/cm2) and its stability with time. Sensibility of freely mounted detectors decreases as an hyperbolic function of the thickness, while the thermal cut off time constant increases up to a limit reached at 25 μm. Influence of the pixel area and spacing between cells on cross talk is also investigated on a multi-units array. Finally, design of a matrix is proposed.

Paper Details

Date Published: 2 March 1989
PDF: 5 pages
Proc. SPIE 1027, Image Processing II, (2 March 1989); doi: 10.1117/12.950256
Show Author Affiliations
Vui V. Pham, Laboratoire d'Automatique et d'Analyse des Systemes du C.N.R.S. (France)
Daniel Esteve, Laboratoire d'Automatique et d'Analyse des Systemes du C.N.R.S. (France)
Essaid Bousbiat, Laboratoire d'Automatique et d'Analyse des Systemes du C.N.R.S. (France)
Jean Farre, Laboratoire d'Automatique et d'Analyse des Systemes du C.N.R.S. (France)
Rene Leguerre, Laboratoire d'Automatique et d'Analyse des Systemes du C.N.R.S. (France)
Jean Simonne, Laboratoire d'Automatique et d'Analyse des Systemes du C.N.R.S. (France)


Published in SPIE Proceedings Vol. 1027:
Image Processing II
Peter J.S. Hutzler; Andre J. Oosterlinck, Editor(s)

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