The Hatton group report in Advanced Materials a new type of high transparency electrode for organic photovoltaics (OPVs), based on an ultra-thin bilayer of copper and amorphous tungsten suboxide, which derives its remarkable optical and electrical properties from diffusion of copper into the oxide layer at room temperature. As the window electrode in efficient OPVs this electrode performs as well as indium-tin oxide glass - the leading transparent electrode technology - by trapping light in a resonant optical cavity.

Full article available at http://dx.doi.org/10.1002/adma.201404263