Red, orange, yellow…

Ah, good ole Roy G. Biv, the mnemonic device that helped us learn the colors of the light spectrum – the visible parts of it, anyway. Just past violet, no longer visible to the human eye, comes ultraviolet, those powerful rays that have a frequency even higher than violet light. In a first-of-its-kind solar technology, a Princeton University scientist has found a way to harness near-UV light and use it to power smart windows.

ExxonMobil is partnering with Princeton’s Andlinger Center for Energy and the Environment, one of several premiere university Energy Centers, to research how the world will meet future energy needs. Lynn Loo is the Theodora D. ’78 and William H. Walton III ’74 Professor of Engineering at Princeton, professor of chemical and biological engineering, and director of the Andlinger Center. She and her team are developing a transparent solar cell that harvests near-UV light to power existing and emerging smart windows. Check out the video below to learn more.


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