Characterization and photoluminescence of V2O5@Pt core-shell nanostructures as fabricated by atomic layer deposition

Abstract

Atomic layer deposition (ALD) was used to deposit platinum (Pt) shell in 0, 50, 100, and 150 cycles on thermally evaporated vanadium pentoxide (V2O5) nanostructures (NSs) with a [1 1 0] growth direction forming V2O5@Pt core-shell nanostructures (CSNSs). The optical properties that were obtained from the photoluminescence spectra showed that emission at 466 nm increased and that at 520–580 nm decreased as the number of ALD cycles of deposition of the Pt shell increased, owing to the localized surface plasmon resonance (LSPR) and the lowering of contact resistance at the interface between the V2O5 core and Pt shell.