Near-Infrared-Plasmonic Energy Upconversion in a Nonmetallic Heterostructure for Efficient H₂ Evolution from Ammonia Borane.

ABSTRACT: Plasmonic metal nanostructures have been widely used to enhance the upconversion efficiency of the near-infrared (NIR) photons into the visible region via the localized surface plasmon resonance (LSPR) effect. However, the direct utilization of low-cost nonmetallic semiconductors to both concentrate and transfer the NIR-plasmonic energy in the upconversion system remains a significant challenge. Here, a fascinating process of NIR-plasmonic energy upconversion in Yb³⁺/Er³⁺-doped NaYF₄ nanoparticles (NaYF₄:Yb-Er NPs)/W₁₈O₄₉ nanowires (NWs) heterostructures, which can selectively enhance the upconversion luminescence by two orders of magnitude, is demonstrated. Combined with theoretical calculations, it is proposed that the NIR

SUBMITTER: Zhang Z 

PROVIDER: S-EPMC6145233 | biostudies-literature | 2018 Sep

REPOSITORIES: biostudies-literature