Hyundai Heavy Industries said Wednesday it has developed selective-emitter solar cells with a record electricity conversion efficiency of 19.7 percent, which could curtail production costs for the fast-growing energy source.
The figure beat the previous record of 19.6 percent by Suntech Power Holdings, the world’s largest maker of photovoltaic panels based in Shanghai. It has also been confirmed by the Fraunhofer Institute for Solar Energy Systems, a leading think tank in Munich, the Korean shipbuilder said.
Selective-emitter solar cells have higher efficiency as their two different doping concentration zones on a silicon wafer surface facilitate current flow, whereas regular cells have only one type.
Hyundai Heavy said its latest 6-inch cells are 1 inch larger than those of Suntech. Their per-unit capacity reaches 4.7 megawatts, up 57 percent compared with its existing products.
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