Formation Mechanism of Nano Silver Film by Laser Action on Particle-Free Complexed Silver Ion Ink

The formation of silver nanoparticles by laser direct writing has been widely studied due to the excellent optical and electrical properties of silver nanoparticles. Although the theoretical and experimental research on silver nanoparticles has been very comprehensive, research on the formation mechanism of nanosilver films based on the particle-free complexed silver ion ink is still necessary. It shows a good consistency of nanoparticle size, which may mainly depend on the excellent film formation uniformity of the particle-free complexed silver ion ink. After laser treatment, the nanosilver film has good transmittance from 500 to 2500 nm and a typical plasma resonance absorption peak. The relationship between laser power and linewidth size induced by the thermal broadening effect is carefully investigated, and the photothermal conversion of the samples is analyzed further.