Patent ID: 11925038
Assignee: OXFORD PHOTOVOLTAICS LTD.
Field: Semiconductors (Electrical engineering)
Classification: CPC H | IPC H

Claim 0:
1. A monolithically integrated multi-junction photovoltaic device comprising a first sub-cell and a second sub-cell in electrical contact with the first sub-cell, the second sub-cell overlying the first sub-cell and arranged such that incident light passes through the second sub-cell to reach the first sub-cell in use, the surface of the second sub-cell having a light receiving surface comprising a layer of a light transmissive electrically conductive material and one or more metal tracks in contact with the layer of light transmissive electrically conductive material and extending in a first direction, a layer of an electrically insulative material is provided on the light receiving surface of the second sub-cell extending under one end of the one or more metal tracks at an edge of the multi-junction cell, and that an electrically conductive pad is provided over the layer of electrically insulative material and in electrical contact with the one or more metal tracks for providing electrical contact to an external circuit, wherein the layer of light transmissive electrically conductive material is not present under at least a portion of the layer of electrically insulative material on the light receiving surface, in which the layer of electrically insulative material on the light receiving surface partly overlaps the layer of light transmissive electrically conductive material.