Ultrashort pulse laser scribing of CIGS-based thin film solar cells

Abstract

The laser scribing is one of the crucial technological steps in the industrial processing of solar cells, while the mechanical scribing is generally used for practical reasons on the laboratory scale. Using a picosecond laser, preliminary results on the scribing of CuInGaSe2 thin film solar cells deposited by the low temperature pulsed electron technique, are reported. The complete comparison between laser- and mechanical-scribing is still in progress, however SEM imaging and EDX analysis confirm the excellent structural and morphological quality of the laser scribed samples.