The views of Leila Sattary on the technologies that will helping in building zero-carbon emitting houses in the UK are presented. Solar power technologies including photovoltaic (PV) cells can help in building such homes and reducing adverse impact of carbon emissions on the environment. Significant research efforts are continuing to improve the cost and performance of PVs. The ability to create efficient PVs depends on creating a semiconductor with a bandgap that can accept the majority of t...