PROCESS OF FORMING AN ELECTRODE ON THE FRONT-SIDE OF A NON-TEXTURED SILICON WAFER

摘要

A process for the production of a front-side electrode on a non-textured silicon wafer having an ARC layer on its front-side, wherein the front-side electrode is printed from a silver paste and fired, wherein the silver paste comprises (i) an inorganic content comprising (a) 93 to 95 wt.-% of electrically conductive metal powder comprising 90 to 100 wt.-% of silver powder, (b) 1 to 7 wt.-% of at least one glass frit, (c) 0 to 6 wt.-% of at least one solid inorganic oxide and (d) 0 to 6 wt.-% of at least one compound capable of forming a solid inorganic oxide on firing and (ii) an organic vehicle, wherein the weight ratio between the electrically conductive metal powder and the glass frit plus solid inorganic oxide is >13 to 19 in the fired state.