Check out our work with the group of Richard Lunt of the MSU Chemical Engineering Department in our new paper in Advanced Optical Materials. With the goal of using windows for solar energy conversion, Richard’s group has developed devices which are nearly perfectly transparent to visible light, but use IR absorbing/emitting chromophores to concentrate light on photovoltaic cells around the edge of the device. Our calculations point towards ways to optimize the chromophores for larger devices by minimizing reabsorption losses.