Journal
JOURNAL OF LUMINESCENCE
Volume 130, Issue 4, Pages 549-553Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2009.10.029
Keywords
Nanophosphor; Yttrium vanadate; Surface passivation
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Funding
- Ministry of Knowledge Economy of Korean government [F0004073-2008-31]
- Korea Evaluation Institute of Industrial Technology (KEIT) [F0004070-2010-33] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
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In an effort to obtain enhanced luminescence under photoexcitation as well as to clarify the underlying correlation between non-radiative sites and a Surface modifier in a nanoscale phosphor, YVO4:Eu3+ Was synthesized via a polyethylene glycol (PEG)-assisted hydrothermal process. The temperature variable photoluminescence reveals that the overall emission behaviors of PEG-added YVO4:Eu3+ phosphor was similar to those of a post-annealed sample without PEG addition. This polymeric agent induces a rough thin layer onto the YVO4:Eu3+ nanoparticle during synthetic procedure, resulting in the prevention of surface-adsorbed species known as non-radiative sites such as NH4+ as well as hydroxyl groups. (C) 2009 Elsevier B.V. All rights reserved.
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