Patent ID: 8723023
Filing Date: 2014-05-13
Classification: H01L,Y02E

Abstract:
1. A photovoltaic device comprising: a substrate based on a crystalline semi-conductor material; a first electrode which comprises at least one heterojunction made on a rear face of the substrate based on a crystalline semi-conductor material, the at least one heterojunction comprises a layer based on a doped amorphous semi-conductor material; and a second electrode, wherein the first and second electrodes are arranged on the rear face of the substrate based on a crystalline semi-conductor material; the first electrode has a first comb pattern where approximately parallel fingers of the first electrode are connected at an end of the first electrode by a first perpendicular finger; the second electrode has a second comb pattern where approximately parallel fingers of the second electrode are connected at an end of the second electrode by a second perpendicular finger, and wherein; the first and second electrodes are arranged according to an interdigitated combs design in which fingers of the first comb are interspersed between fingers of the second comb; wherein each one of the approximately parallel fingers of the first electrode comprises segmented portions of the layer of doped amorphous semi-conductor material that are unconnected and spaced apart from each other and wherein each of the approximately parallel fingers of the second electrode comprises segmented portions of the layer doped amorphous semi-conductor material that are unconnected and spaced apart from each other.