Dye-sensitized solar cells achieve a new power conversion efficiency record

Mesoscopic dye-sensitized solar cells (DSCs) were invented in 1990s by Brian O'Regan and Michael Grätzel, taking on the latter's name—the world-famous Grätzel cells. DSCs convert light into electricity through photosensitizers—dye compounds that absorb light and inject electrons into an array of oxide nanocrystals which subsequently are collected as electric current.