Solar Cells Bificial PERC Solar Cell For Solar Panel

A bifacial solar cell (BSC) is a photovoltaic solar cell that can generate electricity when both its front and back surfaces are lit.

The efficiency of bifacial solar cells is measured separately for the front and back surfaces under one or more suns (1 sun = 1000W/m2), and is defined as the ratio of incident luminous power to generated electrical power.

The bifaciality factor (percent) is the ratio of rear efficiency to front efficiency when both are subjected to the same irradiance.

PERC
Efficiency: Front 19.4–21.2%, Rear 16.7–18.1%
Bifaciality: 70-80%
Mostly commercialized (e.g. JA Solar, LONGi, Trina) e.g. on the p-type c-Si wafer