Swiss scientists have used a minimal amount of silver to alloy the absorber in a thin-film CIGS solar cell. They say this process could help to improve efficiency, open-circuit voltage, and fill factor, while compensating for the low bandgap of the CIGS layer.Scientists from Switzerland's Federal Laboratories for Materials Science and Technology (EMPA) have built a thin-film solar cell based on copper, gallium, indium and selenium (CIGS) by using a small amount of silver (Ag) to alloy the CGIS absorber. They claim the device can be used for applications in tandem solar cells. "The amount of Ag ...Den vollständigen Artikel lesen ...