Tests conducted by DEK Solar and DuPont Microcircuit Materials (MCM) have resulted in silver paste consumption reductions and possible conversion efficiency gains of 0.5% when using fine line screen printing of conventional crystalline solar cells.
DEK Solar said that test results with DuPont’s metallization paste technology showed a significant total reduction of silver consumption of up to 40%. Silver paste remains the second highest material cost next to polysilicon in the making of crystalline solar cells.
Dr Xiao Chen, Chief Technology Officer of DEK Solar said, “The demand for solar as an alternative energy source has never been greater, yet cuts to subsidy support has led to efficiency and costs becoming key priorities for our customers. DEK Solar’s well-established experience and expertise in the industry and screen printing has enabled us to develop solutions including the ultra-fine line dual stencil print process. These state-of-the-art technologies are being deployed across many customer production sites, and we have received very positive feedback from them as they have seen a difference to their cell efficiencies and costs.”
The company said that test results had recently been presented a various industry events in China, Taiwan and India.