Affordable Access

Photoluminescence investigation based on laser heating effect in ZnO-ordered nanostructures.

Authors
  • Yang, Yingling
  • Yan, Hongwei
  • Fu, Zhengping
  • Yang, Beifang
  • Xia, Linsheng
  • Xu, Yuandong
  • Zuo, Jian
  • Li, Fanqing
Type
Published Article
Journal
The Journal of Physical Chemistry B
Publisher
American Chemical Society
Publication Date
Jan 19, 2006
Volume
110
Issue
2
Pages
846–852
Identifiers
PMID: 16471614
Source
Medline
License
Unknown

Abstract

We synthesized ZnO-SiO2 composite opal and ZnO inverse opal by electrodeposition using SiO2-opal template and polystyrene (PS)-opal template, respectively. Compared with compact ZnO nanocrystal film also prepared by electrodeposition, ordered ZnO nanostructures exhibit more significant red-shift and broadening of the UV peak with increasing excitation power, which is due to a stronger local heating effect in ordered ZnO nanostructures. We developed a quantitative analytical method to investigate photoluminescence (PL) of ZnO based on laser heating effects. The experimental data agree well with fitting curves derived from the electron-phonon interaction model. Important parameters, such as electron-phonon coupling strength and thermal activation energy, can be obtained by fitting experimental data. The resonant Raman spectra provide further evidence that the analyses based on laser heating effects are feasible.

Report this publication

Statistics

Seen <100 times