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Proceedings Paper

Photovoltaic effect in ferroelectric polyvinylidene fluoride (PVF2) polymer
Author(s): Wamadeva Balachandran; A. Tawansi; H. Abdelkader; El-Sayed H. El-Konyaly; Somia Mostafa El-Hefnawy
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Paper Abstract

A mathematical model of the bulk photovoltaic effect in polyvinylidene fluoride (PVF2) films due to the optical excitation of impurities or defects in an asymmetric potential is developed. The asymmetry is due to the internal electric field of a poled PVF2 thin film. This effect gives rise to a photocurrent in the absence of an applied electric field in contrast to the conventional photovoltaic effect in ordinary semiconductors. A space charge formation mechanism, based on the non-equilibrium carriers and some characterizing parameters of the traps in the band gap, is modelled. According to this approach the photovoltaic effect is described by three nonlinear interactive differential equations. The equations are solved both analytically and numerically and closed-form formulae for the photovoltaic current and voltage are derived. A computer simulation for the phenomena is performed using the developed model. The results of simulation agree within acceptable accuracy to the experimental results.

Paper Details

Date Published: 23 September 1994
PDF: 12 pages
Proc. SPIE 2285, Nonlinear Optical Properties of Organic Materials VII, (23 September 1994); doi: 10.1117/12.187510
Show Author Affiliations
Wamadeva Balachandran, Univ. of Surrey (United Kingdom)
A. Tawansi, El-Mansoura Univ. (Egypt)
H. Abdelkader, El-Mansoura Univ. (Egypt)
El-Sayed H. El-Konyaly, El-Mansoura Univ. (Egypt)
Somia Mostafa El-Hefnawy, Univ. of Surrey (Egypt)

Published in SPIE Proceedings Vol. 2285:
Nonlinear Optical Properties of Organic Materials VII
Gustaaf R. Moehlmann, Editor(s)

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