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Equivalent circuit model of a nanogenerator based on a piezoelectric nanowire–polymer composite
Author(s) -
Graton Olivier,
PoulinVittrant Guylaine,
Dahiya Abhishek Singh,
Camara Nicolas,
Hue LouisPascal Tran Huu,
Lethiecq Marc
Publication year - 2013
Publication title -
physica status solidi (rrl) – rapid research letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.786
H-Index - 68
eISSN - 1862-6270
pISSN - 1862-6254
DOI - 10.1002/pssr.201308017
Subject(s) - nanogenerator , piezoelectricity , energy harvesting , materials science , voltage , nanowire , optoelectronics , perpendicular , mechanical energy , context (archaeology) , nanotechnology , electrical engineering , composite material , physics , energy (signal processing) , power (physics) , engineering , paleontology , mathematics , quantum mechanics , biology , geometry
A vertically integrated nanogenerator (VING) refers to the new generation of mechanical energy harvesting devices: arrays of piezoelectric and semiconducting nanowires are grown perpendicularly to a substrate and appropriate electrodes enable charge circulation through an external electrical load. In this Letter, an equivalent circuit of VING is proposed. This model takes into account the effect of the polymer matrix that surrounds the nanowire lattice on the electromechanical behaviour of the generator. The active part of the material is then seen as a 1–3 piezocomposite. Simulations were made to study the VING performance in a context of body movement energy harvesting. In particular, it is shown that the strain amplitude and the strain rate of the piezocomposite have an impact on nanogenerator output voltage and output current, respectively. (© 2013 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)