PILOT PRODUCTION OF HIGH EFFICIENT METAL CATALYZED TEXTURED DIAMOND WIRE SAWN MC-SI SOLAR CELLS COMBINED WITH NICKEL-COPPER PLATED FRONT CONTACT PROCESSING

摘要

This paper presents results of combining two promising future technologies: i) metal catalyzed textured (MCT) diamond-wire sawn (DWS) mc-Si wafers and ii) nickel-copper-silver (Ni/Cu/Ag) plated front contact processing. Results of optimizations of laser patterning, annealing and module string soldering are presented. Several 60-cell module with a power output of around 270 W were made, followed by subsequent module reliability testing. All module tests have been passed within the existing boundaries. Pseudo fill-factor (pFF) and open circuit voltage V_(oc) have been identified as the parameters with the highest potential for further improvements. First successful results of plating-emitter development on a MCT-surface are presented.