In some German states, summer vacation has just started. Everyone probably remembers back to graduation when the hurdle of handing out report cards had to be overcome before the reward of a long relaxing holiday break...
Tag - CalLab PV Cells
Innovation 4E
Callab PV Cells: 30 Years of High Precision Measurement in Freiburg
If you want to know the efficiency of a solar cell exactly, it is likely that you will land in Freiburg, Germany sooner or later. For 30 years high-precision reference solar cells – and for almost 25 years reference...
Klaus Heidler