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A number of applications in nanoplasmonics utilize noble metals, gold (Au)and silver (Ag), as the materials of choice. However, these materials sufferfrom problems of poor thermal and chemical stability accompanied by significantdissipative losses under high-temperature conditions. In this regard,semiconductor nanoparticles have attracted attention with their promisingcharacteristics of highly tunable plasmonic resonances, low ohmic losses andgreater thermochemical stability. Here, we investigate the size-dependentthermoplasmonic properties of semiconducting silicon and gallium arsenidenanoparticles to compare them with metallic Au nanoparticles using Mie theory.To this end, we employ experimentally estimated models of dielectricpermittivity in our computations. Among the various permittivity models for Au,we further compare the Drude-Lorentz (DL) and the Drude and critical points(DCP) models. Results show a redshift in the scattering and absorptionresonances for the DL model while the DCP model presents a blueshift. Thedissipative damping in the semiconductor nanoparticles is strongest for thesharp electric octupole resonances followed by the quadrupole and dipole modes.However, a reverse order with strongest values for the broad dipole resonanceis observed for the Au nanoparticles. A massive Drude broadening contributesstrongly to the damping of resonances in Au nanoparticles at elevatedtemperatures. In contrast, the semiconductor nanoparticles do not exhibit anysignificant deterioration in their scattering and absorption resonances at hightemperatures. In combination with low dissipative damping, this makes thesemiconductor nanoparticles better suited for high-temperature applications innanoplasmonics wherein the noble metals suffer from excessive heating.

Thermoplasmonic behavior of semiconductor nanoparticles: A comparison with metals