Stanford researchers 'cool' daylight to enhance photo voltaic cell effectivity

Stanford researchers 'cool' sunlight to improve solar cell efficiency

A workforce of researchers from Stanford College have devised an ingenious technique of boosting the effectivity of photo voltaic panels by exploiting a elementary physics phenomenon. Photo voltaic panels lose effectivity as they warmth up. Simply as the highest of your head radiates extra physique warmth as infrared mild, the researchers have developed a translucent overlay comprised of patterned silica that does the identical for photo voltaic panels. The overlay separates the seen spectrum of sunshine (which generates electrical energy) from its thermal radiation (aka warmth), successfully “cooling” the incoming mild, radiating the warmth away from the panel whereas permitting extra photons to be transformed into electrical energy. The staff, led by Stanford professor Shanhui Fan, just lately revealed their findings within the journal, Proceedings of the Nationwide Academy of Sciences.

“Photo voltaic arrays should face the solar to perform, although that warmth is detrimental to effectivity,” Fan stated in a press release. “Our thermal overlay permits daylight to move by means of, preserving and even enhancing daylight absorption, nevertheless it additionally cools the cell by radiating the warmth out and enhancing the cell effectivity.” In accordance with the workforce’s exams, the overlay cooled the panels floor by as a lot as 22 levels F and boosted power manufacturing by 1 % (a large effectivity leap on the earth of photo voltaic power manufacturing).

[Image Credit: Getty]

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