Quantum Dot Glass

Below is an example of a semi-transparent photovoltaic device made with silicon quantum dot embeded in a polymer layer in between two glass sheets. Nanocrystals absorb part of the solar spectrum and re-emit light in the near-infrared range, which propagates to the device edges by total internal reflection for collection by standard silicon solar cells. This 20x20 cm² device has > 80% visible light transparency, low haze (< 3%), and generates ~ 0.5 W of electrical peak power.