Patent ID: 7883924
Filing Date: 2011-02-08
Classification: H01L,Y02E

Abstract:
1. A method for producing a photovoltaic module, wherein there are deposited as functional layers on a transparent substrate a transparent front electrode layer, a semiconductor layer and a back electrode layer which are patterned by separating lines to form series-connected cells, wherein a laser patterning of the three functional layers is performed, and a laser emitting infrared radiation performs laser patterning of the front electrode layer, laser patterning the semiconductor layer, and laser patterning the back electrode layer with the infrared radiation from the same laser, wherein in the laser patterning of the back electrode layer a single infrared beam patterns both the semiconductor layer and the back electrode layer while reducing the power of the laser during patterning of the back electrode layer so that the front electrode layer is not damaged, and wherein the patterning of the back electrode layer and the semiconductor electrode layer produces the same width of removed material and remains the same width.