Thanks to a strong work on process robustness and the optimization of the process parameters, IPVF team achieved a CIGS solar cells on polyimide substrates with an efficiency of 18.8%. Moreover, first cells using Cd-free buffer layers reached an efficiency of 16.1 %.

Thanks to a strong work on process robustness and the optimization of the process parameters, IPVF team achieved a CIGS solar cells on polyimide substrates with an efficiency of 18.8%. Moreover, first cells using Cd-free buffer layers reached an efficiency of 16.1 %.