Patent ID: 8075723
Filing Date: 2011-12-13
Classification: B23K,H01L,Y02E,Y10T

Abstract:
1. A method for manufacture of unit cells for thin film photovoltaic device, the method comprising: providing an optically transparent substrate having a thickness, a back surface region, and a front surface region including one or more grid-line regions; forming a layered structure including one or more films of photovoltaic materials overlying a metal layer, the metal layer overlying the front surface region; transferring the optically transparent substrate having the layered structure; aligning a laser beam from the back surface region through the thickness of the optically transparent substrate to illuminate a first region within the one or more grid-line regions; subjecting a portion of the metal layer overlying the first region to absorbed energy from the laser beam to separate a first portion of the layered structure from the first region; scanning the laser beam from the first region to a second region along the one or more grid-line regions to cause formation of one or more unit cells of the layered structure; and providing the one or more unit cells.