Nanomachines & Nanomanipulation PrintPV – Large-scale printing of novel photovoltaics based on Cu(In,Ga)Se2 chalcopyrite

The ever growing world energy consumption has brought an increasing need for efficient, clean, and renewable energy sources. For the transition from fossil fuels to alternative energy economy to be practical, the efficient realization of solar energy without CO2 emission will be crucial. Recent advances in photovoltaics (PV) technology have enabled the realization of cost-effective thin-film solar cells. These novel PV cells employ highly absorbing Cu(In,Ga)Se2 (CIGSe) material (with chalcopyrite structure, and the champion power conversion efficiencies (PCEs) for CIGSe solar cells have recently reached 21.7%. Nevertheless, CIGSe PV is produced in small-scale using high temperature evaporation processes, which are vacuum- and energy-demanding processes often-requiring clean room operation. In sharp contrast, this project will tackle the fabrication of a new generation of low-cost CIGSe PV cells through solution-based printing of several device components. Our central goal is the development of working industrial prototypes.

Funded by FCT/COMPETE2020