Journal
JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
Volume 10, Issue 3, Pages 1800-1807Publisher
AMER SCIENTIFIC PUBLISHERS
DOI: 10.1166/jnn.2010.2132
Keywords
ZrO2 Nanocrystals; Hydrothermal; Luminescence
Categories
Funding
- NSFC [20671092, 20773132, 20771101, 20831004]
- 973 program [2009CB939801, 2007CB613301]
- FJIRSM [SZD08002-3]
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Eu3+ doped ZrO2 nanocrystals were prepared by decanoic acid-assisted hydrothermal method. X-ray diffraction, transmission electron microscope, Fourier transform infrared spectroscopy, Ultraviolet-visible diffuse reflection spectroscopy, and photoluminescence spectra were used to characterize the phase evolution, morphology, surface species, and optical properties of the samples. At low Eu3+ content, monoclinic ZrO2 was achieved to show a rod-like morphology. With increasing the Eu3+ content, tetragonal ZrO2 nanocrystals were obtained to show a ball-like shape. Decanoic acid molecules were decorated on the surfaces of ZrO2 nanocrystals, which gave rise to a typical absorption centered at 300 nm. In addition to the characteristic emission of Eu3+, an intense broad emission was detected for pure and Eu3+-doped ZrO2 nanocrystals under ultraviolet excitation, which is interpreted in terms of the F/F+ and/or AOD(+) centers that are related with the oxygen vacancies.
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