TITLE:
Impact of the Thicknesses of the p and p+ Regions on the Electrical Parameters of a Bifacial PV Cell
AUTHORS:
Ramatou Konate, Bernard Zouma, Adama Ouedraogo, Bruno Korgo, Martial Zoungrana, Sié Kam
KEYWORDS:
Doped p+ Region, Bifacial PV Cell, Photocurrent Density, Photovoltage, Polycrystalline Solar Cell
JOURNAL NAME:
Energy and Power Engineering,
Vol.14 No.2,
February
22,
2022
ABSTRACT: The present paper is about a
contribution to the bifacial PV cell performances improvement. The PV cell
efficiency is weak compared to the strong energy demand. In this study, the
base thickness impacts and the p+ zone size influence are evaluated
on the rear face of the polycrystalline back surface field bifacial silicon PV
cell. The photocurrent density and photovoltage behaviors versus thickness of
these regions are studied. From a three-dimensional grain of the
polycrystalline bifacial PV cell, the magneto-transport and continuity
equations of excess minority carriers are solved to find the expression of the
density of excess minority carriers and the related electrical parameters, such
as the photocurrent density, the photovoltage and the electric power for
simultaneous illumination on both sides. The photocurrent density, the
photovoltage and electric power versus junction dynamic velocity decrease for
different thicknesses of base and the p+ region increases for
simultaneous illumination on both sides. It is found that the thickness of the
p+ region at 0.1 μm and the base size at 100 μm allow reaching the
best bifacial PV cell performances. Consequently, it is imperative to consider
the reduction in the thickness of the bifacial PV cell for exhibition of better
performance. This reduced the costs and increase production speed while
increasing conversion efficiency.