Single Step Formation Of Gold Core -Niobium Pentoxide Shell Nanoparticles Using Laser Ablation Technique: Effect of Laser Pulse Number

Abstract

Plasmonic nanoparticles improve light absorption and enhance the charge carrier lifetime of the semiconductor, which provides a tremendous contribution to the advanced field. UV-VIS study indicates the modification of band gap energy and visual absorption with the contrast of the particles in the Nb2O5 nanoparticles resulting from changing the number of laser pulses (from 3.25 to 2.71eV). XRD analyses revealed the successful casing of core-shell (Au) in the Nb2O5 nanoparticle by showing gold vulgar planes in (041) and (111) between Nb2O5. TEM images showed morphological changes and average size modification from 38.18 to 118.1 nm with the size variation of Au@Nb2O5 nanoparticles. Also, it confirmed the successful formation of core-shell nanoparticles. AFM images showed a directional proportion of the surface roughness rate with the number of laser pulses. The electrical resistance showed obvious improvement and decrease in value with the increasing number of laser pulses.