title: Engineering upconversion emission spectra using plasmonic nanocavities.
abstract: We show that the upconversion emission spectra of Tm³⁺ and Yb³⁺ codoped β-NaYF₄-NaYF₄ core-shell nanoparticles can be judiciously modified by means of plasmonic nanocavities. Our analysis indicates that more than a 30-fold increase in conversion efficiency to the UV spectral band can be expected by engineering the NIR absorption and the local density of states. The effect of the nanocavity on the resulting radiation patterns is discussed. Our results are exemplified in cylindrical cavity geometries.
authors: Christopher
authors: C
authors: Lantigua
authors: Sha
authors: S
authors: He
authors: Milad Akhlaghi
authors: MA
authors: Bouzan
authors: William
authors: W
authors: Hayenga
authors: Noah J J
authors: NJ
authors: Johnson
authors: Adah
authors: A
authors: Almutairi
authors: Mercedeh
authors: M
authors: Khajavikhan
mesh_terms: D005459:Fluorides / Q000737:chemistry; D053768:Metal Nanoparticles / Q000737:chemistry; D057145:Nanoshells / Q000737:chemistry*; D055620:Optical Phenomena; D013056:Spectrophotometry, Ultraviolet; D019265:Spectroscopy, Near-Infrared; D020349:Surface Plasmon Resonance; D013932:Thulium / Q000737:chemistry; D015018:Ytterbium / Q000737:chemistry; D015019:Yttrium / Q000737:chemistry
chemical_list: C525362:sodium yttriumtetrafluoride; D015019:Yttrium; D013932:Thulium; D015018:Ytterbium; D005459:Fluorides