Sintering of palladium (Pd) and silicon (Si) nano-particles (NPs) by a 266nm laser pulse train on ink-printed films was
investigated. Organic Pd-ink, and organic Si-ink were used as precursors. A high repetition rate DPSS laser (up to 300
kHz, 25ns, 266nm, Coherent AVIA series), which produces a ns pulse train with 3.3 μs -33.3 μs interval of pulse-topulse,
was used as the heating source. Highly electrically conductive Pd (Resistivity=~150μΩ·cm) thin film on PET
substrate and semi-conductive Si (Resistivity=~23kΩ·cm) thin film on glass substrate were successfully obtained with
this laser pulse train sintering process. The sintered films were characterized by AFM, SEM, TEM and Raman
spectroscopy, respectively. The pulse train heating process was also numerically simulated.