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

• Published in: Chemical physics letters 2019-08, Vol.729, p.24-29
• Main Authors: Wang, Chih-Chiang, Chen, Kang-Chi, Shieu, Fuh-Sheng, Shih, Han C.
• Format: Article
• Language: English
• ISSN: 0009-2614; 1873-4448
• DOI: 10.1016/j.cplett.2019.05.018

[Display omitted] •ALD is an efficient method to fabricate the V2O5@Pt core-shell nanostructures.•Increasing Pt shell thickness enhances the blue-emission but suppresses the green-emission, and vice versa.•Light-emission properties of V2O5 nanostructures can be modulated by the cycles of Pt shell using ALD. 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.