Preparation and luminescence properties of monodisperse silica/aminosilane-coated Y2O3:Yb,Ho upconversion nanoparticles

Monodisperse silica/aminosilane-coated Y 2 O 3 :Yb,Ho nanoparticles are prepared via homogenous precipitation combined with a polyvinylpyrrolidone-assisted ammoniation method. The factors that contribute to the success of the coating are examined, and the procedure is optimized. Compared with uncoat...

Full description

Saved in:
Bibliographic Details
Published in:Chinese science bulletin 2011, Vol.56 (2), p.137-141
Main Authors: Pang, Tao, Cao, WangHe, Xing, MingMing, Luo, XiXian, Xu, ShuJing
Format: Article
Language:English
Subjects:
Chemistry/Food Science
Coatings
Earth Sciences
Emission
Engineering
Humanities and Social Sciences
Life Sciences
Luminescence
multidisciplinary
Nanoparticles
Physics
Precipitation
Science
Science (multidisciplinary)
Silicon dioxide
Surface defects
Upconversion
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Monodisperse silica/aminosilane-coated Y 2 O 3 :Yb,Ho nanoparticles are prepared via homogenous precipitation combined with a polyvinylpyrrolidone-assisted ammoniation method. The factors that contribute to the success of the coating are examined, and the procedure is optimized. Compared with uncoated nanoparticles, coated nanoparticles exhibit an increased ratio of green to red emission intensity, which can mainly be attributed to the decreased number of surface defects induced by the surface coating.
ISSN:1001-6538
1861-9541
DOI:10.1007/s11434-010-4217-x