Influence of NaOH quantity upon the size and luminescent property of core-shell Gd2O3:Tb3+/SiOx nanoparticles

Meigui Ou (1) , Chunlin Yang , Shaohan Cai , Pascal Perriat (1)

1 MATEIS - Matériaux, ingénierie et science [Villeurbanne]

Nanostuctured Tb3+-doped Gd2O3 particles were synthesized from chloride precursors GdCl3 and TbCl3 by NaOH addition in a polyol medium. Then, Gd2O3: Tb3+ particles were encapsulated in a polysioxane shell by being immersed in a mixed solution of APTES and TEOS. Effect of NaOH quantity on size and luminescent property of obtained core-shell nanoparticles was studied. The result shows that the size of nanoparticles increased with the increase of NaOH quantity from 30% to100% of stoichiometry. The emission intensity of core-shell nanoparticles increased with the size of particles due to the enhancement of energy transfer between core and shell.

Mots clés: core-shell; Gd2O3:Tb3+/SiOx; polysiloxane; NaOH

Domaines: Matériaux

Meigui Ou, Chunlin Yang, Shaohan Cai, Pascal Perriat. Influence of NaOH quantity upon the size and luminescent property of core-shell Gd2O3:Tb3+/SiOx nanoparticles. METALLURGY TECHNOLOGY AND MATERIALS II, 2013, KREUZSTRASSE 10, 8635 DURNTEN-ZURICH, Switzerland. pp.323+, ⟨10.4028/www.scientific.net/AMR.813.323⟩. ⟨hal-01814426⟩