Synthesis of In2O3@SiO2 core-shell nanoparticles with enhanced deeper energy level emissions of In2O3

Yiping Fang; Welley S Loc; Weigang Lu; Jiye Fang

doi:10.1021/la203333d

Synthesis of In2O3@SiO2 core-shell nanoparticles with enhanced deeper energy level emissions of In2O3

Langmuir. 2011 Dec 6;27(23):14091-5. doi: 10.1021/la203333d. Epub 2011 Nov 9.

Authors

Yiping Fang¹, Welley S Loc, Weigang Lu, Jiye Fang

Affiliation

¹ Department of Chemistry, State University of New York at Binghamton, Binghamton, New York 13902, USA.

PMID: 22010994
DOI: 10.1021/la203333d

Abstract

In(2)O(3)@SiO(2) core-shell nanoparticles were prepared using an organic solution synthesis approach and reverse-microemulsion technique. In order to explore the availability of various silica encapsulations, a partial phase diagram for this ternary system consisting of hexane/cyclohexane (1:29 wt), surfactant (polyoxyethylene(5)nonylphenyl ether, i.e., Igepal CO-520), and aqueous solution containing ammonium hydroxide was also established. It is realized that the shell-thickness can be tuned by several parameters such as the concentration of In(2)O(3) nanocrystal suspension and the dose of the Si-precursor, tetraethyl orthosilicate. It was observed that the deeper energy level emissions of In(2)O(3) were apparently enhanced when In(2)O(3) was confined by the silica-shell in such core-shell nanoparticles. However, this enhancement could be degraded by increasing the shell-thickness.

Publication types

Research Support, Non-U.S. Gov't
Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Indium / chemistry*
Nanoparticles / chemistry*
Particle Size
Silicon Dioxide / chemistry*
Surface Properties

Substances

Indium
indium oxide
Silicon Dioxide