SPLTRAK Abstract Submission
Short Drying Processes for Silicon Solar Cells
Daniel Ourinson, Michael Linse, Markus Klawitter, Andreas Lorenz
Fraunhofer ISE, Freiburg, Germany

This work successfully demonstrates very short drying processes for the screen-printed electrodes of passivated emitter and rear cells. The short drying processes are conducted in an inline heating system with vertical-cavity surface-emitting lasers (VCSEL) as its heat source, being a compact alternative to the conventional heat chamber. While the heating time of the conventional industrial drying process is believed to be about 20 s (to the best of the authors’ knowledge), the VCSEL system allows a significant reduction down to 0.15 s while maintaining a similar power conversion efficiency and contact adhesion quality.