TITLE:
Bright Red Luminescence and Structural Properties of Eu3+ Ion Doped ZnO by Solution Combustion Technique
AUTHORS:
Sebastián López-Romero, María Jesús Quiroz-Jiménez, Manuel Hipólito García, Alfredo Aguilar-Castillo
KEYWORDS:
ZnO, Europium Ion, Solution Combustion, Photoluminescence
JOURNAL NAME:
World Journal of Condensed Matter Physics,
Vol.4 No.4,
November
20,
2014
ABSTRACT: Pure, and Europium ion
doped Zinc oxide nanocrystals (ZnO:Eu3+) were
synthesized by a solution combustion technique. The X-ray diffraction patterns
(XRD) reveals the existence of the Eu2O3 phase. From the
results of both, X-ray diffraction and photoluminescence spectra (PL) reveal
that Eu3+ ions successfully substitute for Zn2+ ions in the ZnO lattice, moreover, when the amount of doped Europium was varied,
this changes are showed in changes in the luminescence intensity. The PL is
broad and a set of colors was emitted which originates from ZnO and the intra
4f transitions of Eu3+ ions. The existence of the Zn-O, Eu3+-O
and O1s bonding energies were confirmed by X-ray photoelectron spectroscopy
(XPS) technique. The samples morphology was registered by a scanning electron
microscopy (SEM) technique, and reveals that Europium ions are present on the
surface of the ZnO nanocrystals.