title: Spectroscopic properties and upconversion in Pr3+:YF3 nanoparticles.
abstract: The synthesis and spectroscopic investigation of Pr(3+):YF(3) nanoparticles with nominal concentration between 0.05% and 5 at% Pr(3+) are reported. Pr(3+) emission in the visible range of the spectrum is investigated at room temperature and at 10 K as well as time resolved spectroscopy as a function of Pr(3+) concentration. The upconverted emission from the orange to the blue region is observed and the time-resolved spectroscopy of the visible emissions is discussed as a function of the doping level. A careful analysis of the decays permits identification of the main energy-transfer mechanisms that determine the population of the excited levels at various times during the decay.
authors: LCMCP UMR 7574 CNRS/UPMC/Chimie ParisTech, Chimie ParisTech, 11 rue Pierre et Marie Curie, 75235 Paris, France. fabienne-pelle@chimie-paristech.fr
authors: F
authors: F
authors: Pellé
authors: M
authors: M
authors: Dhaouadi
authors: L
authors: L
authors: Michely
authors: P
authors: P
authors: Aschehoug
authors: A
authors: A
authors: Toncelli
authors: S
authors: S
authors: Veronesi
authors: M
authors: M
authors: Tonelli
mesh_terms: D008163:Luminescent Measurements; D053768:Metal Nanoparticles / Q000737:chemistry*; D011221:Praseodymium / Q000737:chemistry*; D013050:Spectrometry, Fluorescence; D015019:Yttrium / Q000737:chemistry*
chemical_list: C064782:yttrium chloride; D015019:Yttrium; D011221:Praseodymium