Electret semiconductor solar cell

Details Electret semiconductor solar cell Electret semiconductor solar cell

H - Electricity

01

L

345/22

H01L 31/18 (2006.01) H01L 31/0216 (2006.01) H01L 31/062 (2006.01)

Patent

CA 1186785

ABSTRACT OF THE DISCLOSURE An induced junction solar cell includes a silicon semi- conductor wafer with an aluminium ohmic contact layer on one surface, a thin oxide layer on the other surface, a grid-type aluminium contact on the oxide layer and an electret, i.e. charged outer polymer layer covering the grid-type contact and exposed oxide layer. The electric field of trapped charges in the electret penetrate the semiconductor and separate photogen- erated carriers. Minority carriers are extracted through a rectifying grid-type contact to permit a build-up of potential and a barrier for majority carriers.

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