title: Upconversion multicolor fine-tuning: visible to near-infrared emission from lanthanide-doped NaYF4 nanoparticles.
abstract: A general approach to fine-tuning the upconversion emission colors, based upon a single host source of NaYF4 nanoparticles doped with Yb3+, Tm3+, and Er3+, is presented. The emission intensity balance can be precisely controlled using different host-activator systems and dopant concentrations. The approach allows access to a wide range of luminescence emission from visible to near-infrared by single-wavelength excitation.
authors.affiliation: Department of Chemistry, National University of Singapore, Singapore 117543.
authors.forename: Feng
authors.initials: F
authors.lastname: Wang
authors.forename: Xiaogang
authors.initials: X
authors.lastname: Liu
mesh_terms: D004871:Erbium / Q000737:chemistry; D005456:Fluorescent Dyes / Q000737:chemistry*; D005459:Fluorides / Q000737:chemistry*; D028581:Lanthanoid Series Elements / Q000737:chemistry*; D046529:Microscopy, Electron, Transmission / Q000379:methods; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D013055:Spectrophotometry, Infrared / Q000379:methods*; D013932:Thulium / Q000737:chemistry; D015018:Ytterbium / Q000737:chemistry; D015019:Yttrium / Q000737:chemistry*
chemical_list: D005456:Fluorescent Dyes; D028581:Lanthanoid Series Elements; C525362:sodium yttriumtetrafluoride; D015019:Yttrium; D004871:Erbium; D013932:Thulium; D015018:Ytterbium; D005459:Fluorides