Controlled reflectance solar cell

Details Controlled reflectance solar cell Controlled reflectance solar cell

1988-04-29

1989-06-13

Weisstuch, Aaron

Batteries: thermoelectric and photoelectric

Photoelectric

Cells

437 2, 357 30, H01L 3106, H01L 3118

Patent

active

048389528

ABSTRACT:
A solar cell is disclosed wherein both the emitter and the base electrical contacts for a solar cell are disposed on the back major surface. Holes extend through the back major surface and the base layer to the emitter layer. The walls of the holes are doped to the same conductivity as the front emitter layer. Emitter contacts are deposited on the back major surface of the cell and extend into the holes making electrical contact to the emitter layer for collecting light generated current carriers. The base contacts are also disposed on the back major surface, and antireflection coatings are deposited on the emitter front major layer. Consequently, the front of the solar cell can be made smooth and therefore, a specularly reflective (non-scattering) solar cell results.

REFERENCES:
R. N. Hall et al, "Polka Dot Solar Cell", Conf. Record, 14th Photovoltaic Specialists Conf. (1980), pp. 550-553.
R. A. Sinton et al., "Silicon Point Contact Concentrator Solar Cells", Proc. 18th IEEE PVSC, 1985, pp. 61-65.

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