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Journal of Materials Science

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01-06-2007

Observation of an ultraviolet emission band in TiO₂ nanocrystals doped with Eu³⁺

Authors: Q. G. Zeng, Z. J. Ding, Z. M. Zhang

Published in: Journal of Materials Science | Issue 11/2007

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Abstract

The photoluminescence spectra of titanium dioxide (TiO₂) nanocrystals doped with Eu³⁺ (molar ratio Eu³⁺/TiO₂ = 0, 1, 2, 4%) are investigated under different excitation wavelengths. An ultraviolet band of emission energy higher than the energy gap is found for excitation wavelengths larger than 315 nm when the Eu³⁺ content is higher than 2%. The new emission band redshifts and its emission intensity is intensified with the increase of excitation wavelength. The emission mechanism for the new ultraviolet emission band is analyzed.

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Title: Observation of an ultraviolet emission band in TiO2 nanocrystals doped with Eu3+
Authors: Q. G. Zeng
Z. J. Ding
Z. M. Zhang
Publication date: 01-06-2007
Publisher: Kluwer Academic Publishers-Plenum Publishers
Published in: Journal of Materials Science / Issue 11/2007
Print ISSN: 0022-2461
Electronic ISSN: 1573-4803
DOI: https://doi.org/10.1007/s10853-006-0411-2

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