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AssigneeEcole Polytechnique Federale De Lausanne (Epfl)
InventorsPhilipp LÖPER, Josua STÜCKELBERGER, Christophe BALLIF, Franz-Joseph HAUG, Philippe WYSS
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In the present invention a new solar photovoltaic module is proposed comprising a solar cell comprising a silicon layer having a first surface and a second surface opposite to said first surface. The solar cell further comprises a passivating layer stack comprising a heterogeneous layer arranged on said first surface and/or on said second surface. The heterogeneous layer, having a back surface and a front surface, comprises a non-conducting matrix having a refractive index being lower than 3.0. The heterogeneous layer further comprises inclusions of at least one conductive material in said matrix, and at least some of said inclusions extend from said back surface to said front surface of the heterogeneous layer for electrically connecting the surfaces of the heterogeneous layer.
1-34. (canceled)
A solar cell comprising a light absorbing silicon layer, having a first surface and a second surface opposite to said first surface, wherein it further comprises a heterogeneous layer arranged on said first surface and/or on said second surface, having a front surface and a back surface opposite to each other, said back surface being oriented to the side of said first surface, the heterogeneous layer comprising an electrically low-conducting matrix, said matrix having a refractive index lower than 3, the heterogeneous layer further comprising electrically conducting inclusions in said matrix, said inclusions being silicon filaments and at least a portion of said inclusions being electrically interconnected such that they form a charge carrier transport path from said back surface to said front surface, so that said back surface is electrically connected to said front surface.
Dependencies are inferred from the claim text.