XsunX confirms 16.3% top efficiency for CIGS solar cells

XsunX, hybrid thin-film photovoltaic solar cell manufacturing process developer, had its copper-indium-gallium-(di)selenide (CIGS) photovoltaics technology certified at 16.3% top efficiency by the NREL.

July 13, 2011 — XsunX Inc. (XSNX), hybrid thin-film photovoltaic (TFPV) solar cell manufacturing process developer, had its copper-indium-gallium-(di)selenide (CIGS) photovoltaics technology certified at 16.3% top efficiency by the Department of Energy’s National Renewable Energy Laboratory (NREL).  

Overall efficiency of tested samples ranged from 15.3 to 16.36%, producing an average efficiency of 15.91%. The NREL sample was part of a 125mm2 substrate, which was subdivided into quadrants post-deposition, creating NREL device test structures and analytical equipment test structures.

XsunX will use the collected data to make process improvements. “The viability of single-cell processing” was affirmed by NREL’s official measurement, said Robert Wendt, CTO at XsunX, adding that the numbers were what XsunX expected.

XsunX uses co-evaporation for rapid deposition of final-sized CIGS cells, which it says controls CIGS layer deposition better than conventional thin film PV manufacturing processes. The entire process begins and ends using individual substrates sized to match silicon cells. This provides a smaller deposition surface than CIGS rolls, and avoids materials losses from cutting.

XsunX Inc. developed a new manufacturing process to produce low cost, high efficiency thin-film Copper Indium Gallium (di) Selenide (CIGS) thin film solar cells. Visit the company’s website at www.xsunx.com

Thin film solar cell manufacturer United Solar also recently reported 16.3% efficiency on its technology, which is based on nano-crystalline silicon.

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