Solar Cells with 19.5pc Conversion Efficiency in Canada

June 16, 2011 / William Thomson, Green Homes Expert

A collaboration between DuPont and Canadian Solar Inc. has resulted in ELPS cells with 19.5 percent conversion efficiency for monocrystalline silicon (c-Si) solar cells that use Metal Wrap Through (MWT) technology.

Solar Cells with 19.5pc Conversion Efficiency in Canada

The deal was inked amid DuPont’s progress in achieving conversion efficiency of c-Si solar cells beyond 20 percent in 2012, through innovative material and process technology improvements, and key collaborations.

Zhang Lingjun, technical vice president at Canadian Solar, said: “DuPont Solamet metallization paste for MWT technology has good resistance, durability, and is compatible with Canadian Solar’s cell manufacturing process. When compared with N-type cell structures, the manufacturing process for ELPS technology is easy to ramp-up and is cost-effective.

“The ELPS cells and modules will first be showcased from June 8 to 10 at the Canadian Solar booth (Hall A1.280) during 2011 Intersolar in Munich, Germany.”

DuPont Solamet photovoltaic metallizations are part of the products represented by DuPont Photovoltaic Solutions (DPVS) connecting science and technology from across the company on a global scale to sustain growth in the photovoltaic industry.

“DuPont has accelerated the development of higher efficiency Solamet metallization paste technology in part through key collaborations, and the results have been exceptional,” according to Peter Brenner, global marketing manager, photovoltaics at DuPont Microcircuit Materials.

“To advance MWT efficiency, we initiated programs with photovoltaic industry leaders such as Green Energy & Environmental Research Laboratories and Industrial Technology Research Institute of Taiwan (ITRI) – boosting module efficiency up to 1.6 percent, and we continue to improve formulations to benefit our customers. We’re quite honored that Solamet has enabled Canadian Solar to achieve this level of efficiency with its ELPS solar cell technology.”

In 2011 alone, DuPont has introduced a number of new Solamet brand photovoltaic metallization products that are said to increase solar efficiency and to reduce overall system cost.

For example, new products included Solamet PV17A high-efficiency frontside silver, Solamet PV361 and PV362 for local back surface field designs and Solamet PV701 for MWT solar cell technology.

In hopes of minimizing the industry’s dependence upon silver metals, DuPont Microcircuit Materials plans to speed up the development of breakthrough Solamet technologies.

In September 2009, DuPont Microcircuit Materials first introduced DuPont Solamet PV412 photovoltaic (PV) metallization paste in a line of silver conductor materials designed for thin film PV technologies. Industry experts projected thin film PV to be the fastest-growing part of the solar cells industry for its potential to reduce the cost of producing solar-derived energy.

For over four decades, DuPont Microcircuit Materials has been developing, manufacturing, and selling specialized thick film compositions for a wide variety of electronic applications in the photovoltaic, display, automotive, biomedical, industrial, military and telecommunications markets.

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