batch shows average efficiencies = 17% on multi-crystalline silicon with the
size of 156 x 156 mm². Batch A achieves an average efficiencies = 17.2% whereas for batch B, the efficiency is
slightly decreased to 16.9% we explain these differences by mean variation of experiment The
comparison of electroluminescence measurements on solar cells with the novel bb-paste to reference cells shows
no increase of the series resistance and no indication of contamination of the silicon wafer material.