title: Optimization of the synthesis of nanostructured Tb3+-doped Gd2O3 by in-situ luminescence following up.
abstract: Nanostructured Tb(3+)-doped Gd(2)O(3) particles have been synthesized from chloride precursors by NaOH addition in a polyol medium. In-situ luminescent spectra have been investigated in order to follow up the process of formation and growth of these particles by varying parameters as the elaboration temperature and the rate of NaOH addition. Contrarily to all the literature related to the "polyol" synthesis, the paper proves that oxide particles can be directly formed at room temperature. These particles are also slightly bigger and organized in nanorods when NaOH is added progressively. Finally, it was found that the influence of further annealing up to 160 degrees C strongly depends on the NaOH addition rate. While preserving the oxide phase, annealing leads to bigger particles only in the case of a progressive addition of NaOH.
authors.affiliation: Materials Engineering and Science, UMR CNRS 5510, Université de Lyon, INSA-Lyon, 69621 Villeurbanne Cedex, France.
authors.forename: Meigui
authors.initials: M
authors.lastname: Ou
authors.forename: Brice
authors.initials: B
authors.lastname: Mutelet
authors.forename: Matteo
authors.initials: M
authors.lastname: Martini
authors.forename: Rana
authors.initials: R
authors.lastname: Bazzi
authors.forename: Stéphane
authors.initials: S
authors.lastname: Roux
authors.forename: Gilles
authors.initials: G
authors.lastname: Ledoux
authors.forename: Olivier
authors.initials: O
authors.lastname: Tillement
authors.forename: Pascal
authors.initials: P
authors.lastname: Perriat
mesh_terms: D002712:Chlorides / Q000737:chemistry; D005682:Gadolinium / Q000737:chemistry*; D049449:Luminescence; D053758:Nanoparticles / Q000737:chemistry* / Q000648:ultrastructure; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D011108:Polymers / Q000737:chemistry; D012972:Sodium Hydroxide / Q000737:chemistry; D013696:Temperature; D013725:Terbium / Q000737:chemistry*
chemical_list: D002712:Chlorides; D011108:Polymers; C024617:polyol; D013725:Terbium; C030581:gadolinium oxide; D012972:Sodium Hydroxide; D005682:Gadolinium