Ne avevamo sentito parlare all’EUPVSEC di Milano. Eccoli i sudafricani che hanno sviluppato una tecnologia a film sottile molto interessante, dopo 12 anni di ricerche.
Johanna Solar Technology GmbH manufactures thin film solar modules based on CIGSSe-technology which utilises copper, indium, gallium, sulphur and selenium. The manufacturing process of these CIGSSe-solar modules was developed and brought to an industrial marketable standard by Professor Vivian Alberts and his team over a twelve year research period at the University of Johannesburg.

Figure shows the construction of the CIGSSe based solar cell in schematic form. By virtue of the fact that CIGSSe is a direct semiconductor with a high absorption capability, layers as thin as just 2µm only are required for absorption of light. The photovoltaic layers are therefore not thicker than a hair.