Solar PV R&DProject SunDrive Copper Metallisation Demonstration
This report provides a summary of the exciting achievements the project has made over the last 3 years progressing copper as a viable replacement for silver in solar cell module production.
Current mainstream silicon photovoltaic (PV) technology is based on the passivated emitter and rear cell (PERC) design. As this solar cell technology fast approaches its efficiency limits, the industry is rapidly pursuing next generation passivated contact technology. One passivated contact technology that has attracted considerable interest worldwide is the silicon heterojunction (HJT) technology due to its >26% cell efficiencies on industrial wafers. However, a key concern for adoption of this technology is its high use of the precious metal silver for cell metallisation.