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Small. 2015 Jun;11(23):2768-73. doi: 10.1002/smll.201402320. Epub 2015 Mar 10.

Y₂O₃:Yb³⁺/Er³⁺ Hollow Spheres with Controlled Inner Structures and Enhanced Upconverted Photoluminescence.

Author information

1
Department of Physical Chemistry, School of Metallurgical & Ecological Engineering, University of Science and Technology Beijing, Beijing, 100083, China.
2
Queensland Micro- and Nanotechnology Centre, Griffith University, Nathan Campus, QLD, 4111, Australia.

Abstract

Multishell Y2 O3 :Yb(3+) /Er(3+) hollow spheres with uniform morphologies and controllable inner structures are prepared successfully by using a glucose-template hydrothermal process followed by temperature-programmed calcination. Much enhanced upconverted photoluminescence of these Y2 O3 :Yb(3+) /Er(3+) are observed, which are due to the multiple reflections and the enhanced light-harvesting efficiency of the NIR light resulting from the special features of the multishell structures.

KEYWORDS:

hollow spheres; hydrothermal synthesis; multishell structure; photoluminescence; upconversion

PMID:
25759264
DOI:
10.1002/smll.201402320

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