Investigation of CIS/CIGS and CdTe solar cells scribing with high-power fibre short pulse lasers
2012
We present here some of the last results of the EUROPEAN project ALPINE. We present both the development of an
adjustable fibre laser pulse source and scribing results on CdTe and CIGS solar cells. The scribing tests were performed
at three different pulse durations: 400 fs, 8 ps and 250 ps. The results obtained with 250 ps are already very promising
for P3 steps in both CdTe and CIGS solar cells. In both cases the results were validated electrically.
In the case of P3 scribing for CIGS solar cells, shunt resistances as high as 125 kΩ.cm were obtained. Isolation
resistances were higher than 1 MΩ.cm. The processing speed was 2 m/s.
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