A dye-sensitised solar cell (DSSC) is a thin film cell that uses thin layers of photosensitive organic dye deposits on a substrate to produce power from solar energy. In 2011, this technology took several important steps towards cost effective commercialisation, with major industrial players such as Tata Steel Europe (formerly the Corus Group) signing an agreement with Australia-based Dyesol, one of the original innovators of DSSC, for developing the world's largest dye-sensitised photovoltaic (PV) module, by printing a continuous series of dye-sensitised PV coatings on steel bars.