Patent ID: 8187912

Claim:
A method of forming a back contact on a thin film photovoltaic device, the method comprising: applying an anisotropic conductive paste over a p-n junction defined by a n-type thin film layer and a p-type thin film layer, wherein the anisotropic conductive paste comprises a polymeric binder and a plurality of conductive particles, and wherein the p-n junction defines a plurality of first isolation scribes, each first isolation scribe extending through the p-type thin film layer, the n-type thin film layer, and a transparent conductive oxide layer to a substrate such that individual cells are defined in the device by electrically isolating the transparent conductive oxide layer; curing the anisotropic conductive paste to form an anisotropic conductive layer on the p-n junction, wherein the first isolation scribe forms part of the anisotropic conductive layer such that adjacent individual cells are electrically isolated from each other via the anisotropic conductive layer in the first isolation scribe; and, applying a metal contact layer on the anisotropic conductive layer.