Journal
CERAMICS INTERNATIONAL
Volume 44, Issue 13, Pages 15700-15705Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.ceramint.2018.05.242
Keywords
Benzenecarboxylate; 5-sulfoisophthalic acid monosodium salt; Europium doping; Yttrium; Photoluminescence
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Funding
- Fundacao de Amparo a Pesquisa do Estado de Sao Paulo (FAPESP) [2015/19210-0]
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES) [1723707]
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq) [164253/2015-7]
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Y2O2SO4:Eu3+ with monoclinic crystalline structure was synthesized in air by low temperature thermolysis (500 degrees C, 1 h) of RE3+-STMA precursors (RE: Rare Earth, STMA: 5-sulfoisophthalate). The annealing of the samples for 1 h at temperatures ranging from 500 to 1000 degrees C promotes a nanometric phase (18-89 nm) with increased crystallinity for higher temperatures. At the limit temperature of 1100 degrees C, the complete removal of Sulfur atoms leads to the formation of highly luminescent Y2O2:Eu3+ nanocrystals. Evaluation of the luminescent properties of the particles produced at different calcination temperature showed high emission quantum efficiencies (eta = 44-70%).
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