| 摘要 |
A solar cell disposed in a substrate, the solar cell comprising (A) a first sub-cell having a conductor disposed in the substrate which is adapted to receive a first voltage, a collection region, and an insulating layer disposed on the conductor and (i) between the conductor and the collection region and (ii) between the conductor and the substrate, and (B) a second sub-cell, having a conductor disposed in the substrate which is adapted to receive a second voltage, a collection region, and an insulating layer disposed (i) between the conductor and collection region and (ii) between the conductor and substrate. The ratio of a depth of the conductors to a width of the conductors is greater than or equal to 10:1; in one embodiment, a distance between the first and second sub-cells is greater than the sum of the widths of depletion/inversion layers formed during operation.
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