Solar cell with reduced base diffusion area

Details Solar cell with reduced base diffusion area Solar cell with reduced base diffusion area

2011-08-30

2011-08-30

Ridley, Basia (Department: 1725)

Batteries: thermoelectric and photoelectric

Photoelectric

Cells

C136S255000, C136S258000, C136S261000

Reexamination Certificate

active

08008575

ABSTRACT:
In one embodiment, a solar cell has base and emitter diffusion regions formed on the back side. The emitter diffusion region is configured to collect minority charge carriers in the solar cell, while the base diffusion region is configured to collect majority charge carriers. The emitter diffusion region may be a continuous region separating the base diffusion regions. Each of the base diffusion regions may have a reduced area to decrease minority charge carrier recombination losses without substantially increasing series resistance losses due to lateral flow of majority charge carriers. Each of the base diffusion regions may have a dot shape, for example.

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