Tin dioxide nanoparticles synthesized via laser ablation in various liquids medium

At room temperature (RT), Tin dioxide (SnO2) nanoparticles (NPs) have been created through pulsed laser ablation (PLA) of tin in various liquid mediums. FTIR, TEM, electrical characteristics and UV-Visible absorption spectrum were used for investigating the particle properties. The prepared material is spherical NP, with size and size dispersion are dependent upon liquid media, as seen by TEM micrographs. The shift of the Sn-O band from 681 cm(-1), 663.4 cm(-1) to 657 cm(-1) in double deionize water, ethanol and methanol, respectively, could be related to the increase of the concentration of SnO2 NPS and change of particles size. Depending on the quantum confinement model, the band gap energy related to SnO2 NPs is larger in various liquid medium compared to that of bulk SnO2 because of a decrease in size of the particle. Poor rectification properties because of charge carriers' recombination of holes and electrons in depletion region, along with the tunneling effect based on the two sides of heterojunction and existence of defect states can be seen in the J-V characteristics of Al/SnO2 NPs/c-Si/Al heterojunction.

Automated summary

Spherical tin dioxide nanoparticles were prepared through pulsed laser ablation in liquid mediums, with their size and size dispersion depending on the liquid medium. The shift of the Sn-O band in different liquid mediums can be attributed to the increase in concentration and decrease in size of the SnO2 nanoparticles. The band gap energy of SnO2 nanoparticles is larger compared to bulk SnO2 due to quantum confinement.