Abstract:
Energy harvesting from solar-cell with high efficiency has great attention from the last
few decades. For this purpose, the addition of pyroelectric materials which have the
ability of polarization with the change in temperature used as an interlayer between
absorber and anti-reflection layer. Pyroelectric polymers can effectively improve the
photovoltaic performance of solar cells. It can induce an electric field to promote the
dissociation of electron-hole pairs, and the generated charge is collected from the
opening. This enhancement in performance requires that the material have a unique
crystal structure to polarize it at low energy. Multiple approaches are used to collect
higher β-phase content, we herein assess a route to crystalline polyvinylidene fluoride
(PVDF) electrospun nanofibers and thin-films based on electrospinning and spin
coating method. The significant feature of the above method is that PVDF and blende
of carbon black and PVDF are mixed into an acetone/DMF solution, and a thin film
with high thermoelectric β phase content is prepared by Spin-coating and Electrospun.
However, the characterization of electrospun nanofibers with FTIR and XRD shows
that the crystallinity is significantly higher i.e. β-phase content. We find that the
nanofibers prepared by electrospinning have more electroactive β-phase content than
spin-coated films. Therefore, the organic pyroelectric nanofibers and thin films with
controlled boundaries proposed in this study are very suitable for a wide scope of
optoelectronic applications.
