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Suntech delivers power-efficient solution

Posted: 09 Feb 2007 ?? ?Print Version ?Bookmark and Share

Keywords:solar cells? Suntech Power Holdings?

Suntech Power Holdings Co. Ltd has introduced a technology that delivers beyond-industry performance of 18 percent 'semiconductor finger' conversion efficiency. The company co-developed and co-owned the technology with the University of New South Wales in Australia.

''We are very pleased with our semiconductor finger technology which has increased the average conversion efficiencies of our 'best' monocrystalline photovoltaic (PV) cells to 18 percentwell above the industry average of 14 percent to 15 percent. At the same time, we have maintained the lowest cost production base relative to our peers,'' said Zhengrong Shi, Suntech's chairman and CEO.

The technology overcomes the major limitation of the traditional screen printing process, which is the industry's standard. Heavily-doped semiconductor strips are built into the PV cell surface which more efficiently collects the generated electrical charge without requiring the surface dead layer found in conventional screen printed cells. The technology is expected to enable the company to reduce the number of traditional lines of metal contact strips on top of the PV cell, thus reducing shading from the sun to enable the PV cell to generate greater watts of electricity.

''Perhaps the most exciting part about this new technology is that it has worked particularly well with the lower-grade and poor quality silicon wafers for which we have seen increases in conversion efficiency of upwards of 17 percent,'' added Shi. The technology will enable Suntech to process lower cost silicon wafers at higher conversion efficiencies than peer companies.

Suntech said that the commercial adoption of the solution is proceeding on schedule.

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