Solliance’s research in the fields of CIGS (Copper Indium Gallium diSelenide/Sulfide) concentrates on to the upscaling and cost reduction of the CIGS module technology, while CZTS (Copper Zinc Tin Sulfide) looks into the fundamentals of materials composition for achieving a high band gap thin film material for tandem applications.

As a substrate, all types of materials, both flexible (like metals and plastics) and non-flexible (like glass) are being investigated. For the deposition of the active materials Solliance is constantly improving the upscaling performance of three baseline processes in parallel: co-evaporation, sputtering and electro-plating, achieving major results in reproducibility and uniformity as a result of reduced process temperatures, non-vacuum and roll-to-roll production methods, process control and standardization.

For specific production applications, close cooperation has been established with suppliers of production machinery, like deposition equipment and printing machines (for absorber layers, transparent conductors, barrier layers, interconnection by atmospheric processes like electrochemistry, APCVD, atmospheric plasma, and fast ALD), roll-to-roll ovens (for selenization and sufurization, crystallization), and equipment for monitoring and quality control.

As CIGS solar technology has become viable for wide application in various domains Solliance is working closely with industry to scale up large volume manufacturing and to develop the supply chain for specific applications such as Building Integrated PhotoVoltaics.

The focus of the CZTS technology is to realize a high band gap (between 1.6 and 2.1 eV) semiconducting kesterite material that will allow to develop a tandem solar cell module with an efficiency above 30%.