Affiliation:
1. Nile University
2. The American University
Abstract
Light trapping as a result of embedding plasmonic nanoparticles (NPs)
into photovoltaics (PVs) has been recently used to achieve better
optical performance compared to conventional PVs. This light trapping
technique enhances the efficiency of PVs by confining incident light
into hot-spot field regions around NPs, which have higher absorption,
and thus more enhancement of the photocurrent. This research aims to
study the impact of embedding metallic pyramidal-shaped NPs inside the
PV’s active region to enhance the efficiency of plasmonic silicon PVs.
The optical properties of pyramidal-shaped NPs in visible and
near-infrared spectra have been investigated. The light absorption
into silicon PV is significantly enhanced by embedding periodic arrays
of pyramidal NPs in the cell compared to the case of bare silicon PV.
Furthermore, the effects of varying the pyramidal-shaped NP dimensions
on the absorption enhancement are studied. In addition, a sensitivity
analysis has been performed, which helps in identifying the allowed
fabrication tolerance for each geometrical dimension. The performance
of the proposed pyramidal NP is compared with other frequently used
shapes, such as cylinders, cones, and hemispheres. Poisson’s and
Carrier’s continuity equations are formulated and solved for the
current density–voltage characteristics associated with embedded
pyramidal NPs with different dimensions. The optimized array of
pyramidal NPs provides an enhancement of 41% in the generated current
density when compared to the bare silicon cell.
Subject
Atomic and Molecular Physics, and Optics,Engineering (miscellaneous),Electrical and Electronic Engineering
Cited by
2 articles.
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