Panasonic Corp.'s (6752.TO, PC) prototype solar cell has achieved the world's highest conversion efficiency at 24.7%, according to tests performed by the National Institute of Advanced Industrial Science and Technology, the Nikkei reports in its Feb. 11 edition.

It beat the previous record of 24.2% held by U.S. company SunPower Corp., a mark that is still recognized as the world's highest by Progress in Photovoltaics, an internationally recognized publication in the field of solar-energy research.

The Panasonic prototype's surface membrane allows more sunlight to pass through, and its electrodes transfer electricity more efficiently. The company aims to commercialize the prototype and raise the conversion efficiency of its mass-market solar cells, which stands at 21.6%.