Sharp develops 36.9 percent efficient solar cell07. November 2011 | Industry & Suppliers, Products, Research & Development | By: Becky Stuart
Sharp Corporation has achieved what it says is the highest silicon solar cell conversion efficiency globally. At 36.9 percent, the company says the results have been confirmed by the National Institute of Advanced Industrial Science and Technology.
The efficiency record was achieved on a triple-junction compound solar cell, in which the solar cell has a stacked three-layer structure.
"Compound solar cells utilize photo-absorption layers made from compounds consisting of two or more elements, such as indium and gallium," explained Sharp in a statement released. "Because of their high conversion efficiency, compound solar cells have been used primarily on space satellites."
The company added that the conversion efficiency was reached by reducing the resistance of the junction areas necessary to connect the solar cell layers in series.
The work was carried out under a research and development initiative promoted by Japan’s New Energy and Industrial Technology Development Organization (NEDO).
Sharp could not be reached for further comment.
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