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

Claim 12:
13. A method of making a monolithically integrated photovoltaic device, the method comprising:
(a) providing a first photovoltaic sub-cell;
(b) providing a second sub cell on top of and in electrical contact with the first sub-cell, the light receiving surface of the second sub-cell comprising a layer of a light transmissive electrically conductive material on the majority of the top surface of the second sub-cell;
(c) providing a layer of an electrically insulative material on a minority of the top surface of the second sub-cell;
(d) providing elongate electrical contacts on the light receiving surface, which contacts extend over both the layer of light transmissive electrically conductive material and the layer of electrically insulative material; and
(e) providing an electrically conductive pad on top of the layer of electrically insulative material and in electrical contact with said elongate electrical contacts, wherein
step (b) is performed so that a region of the light receiving surface does not have a layer of a light transmissive electrically conductive material;
wherein in step (c) the layer of electrically insulative material is provided on said region of the light receiving surface which does not have a layer of a light transmissive electrically conductive material; wherein in step (c) the layer of electrically insulative material is arranged to overlap the edge of the layer of light transmissive electrically conductive material.