Published October 20, 2004 | Version v1
Journal article Metadata-only

Enhanced yellow-green photoluminescence from ZnO-SiO2 composite opal

Creators

  • 1. Department of Materials Science and Engineering, University of Science and Technology of China, Hefei, Anhui 230026 (China)
  • 2. Structure Research Laboratory, University of Science and Technology of China, Hefei, Anhui 230026 (China)

Description

A remarkably enhanced yellow-green photoluminescence (PL) was observed from ZnO nanocrystals infiltrated into SiO2 opal photonic crystals. It was clearly visible to the naked eye under the excitation of an Xe lamp and had substantially improved thermal stability over pure ZnO nanocrystals. The PL spectrum shape of a ZnO-SiO2 composite opal can be modified by annealing an SiO2 opal or choosing an SiO2 opal with different lattice parameters. The enhancement of PL intensity is interpreted based on the dependence of the PL intensity on the size of SiO2 microspheres as well as the anisotropy of the photoluminescence excitation (PLE) spectra. Our results may be interesting for further application

Availability note (English)

Available online at http://stacks.iop.org/0953-8984/16/7277/cm4_41_009.pdf or at the Web site for the Journal of Physics. Condensed Matter (ISSN 1361-648X) http://www.iop.org/

Additional details

Identifiers

URL
http://stacks.iop.org/0953-8984/16/7277/cm4_41_009.pdf; http://www.iop.org/;
DOI
10.1088/0953-8984/16/41/009;
PII
S0953-8984(04)78998-5;

Publishing Information

Journal Title
Journal of Physics. Condensed Matter
Journal Volume
16
Journal Issue
41
Journal Page Range
p. 7277-7286
ISSN
0953-8984
CODEN
JCOMEL

INIS

Country of Publication
United Kingdom
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
36033905
Subject category
S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; S36: MATERIALS SCIENCE;
Descriptors DEI
ABSORPTION SPECTRA; ANISOTROPY; ANNEALING; CRYSTALS; EXCITATION; LATTICE PARAMETERS; MICROSPHERES; NANOSTRUCTURES; OPALS; PHOTOLUMINESCENCE; SILICON OXIDES; STABILITY; ZINC OXIDES
Descriptors DEC
CHALCOGENIDES; EMISSION; ENERGY-LEVEL TRANSITIONS; HEAT TREATMENTS; LUMINESCENCE; MINERALS; OXIDE MINERALS; OXIDES; OXYGEN COMPOUNDS; PHOTON EMISSION; SILICA; SILICON COMPOUNDS; SPECTRA; ZINC COMPOUNDS