Autor(es)

Silva, I. G. N. ^[1] ; Morais, A. F. ^[1] ; Brito, H. F. ^[2] ; Mustafa, D. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Fis, BR-05508090 Sao Paulo, SP - Brazil

^[2] Univ Sao Paulo, Inst Quim, BR-05508900 Sao Paulo, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: CERAMICS INTERNATIONAL; v. 44, n. 13, p. 15700-15705, SEP 2018.
• Citações Web of Science: 2

Resumo

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%). (AU)

• Processo FAPESP: 15/19210-0 - Hidróxidos duplos lamelares (LDH) nanoestruturados com propriedades de up e down-conversion para aplicações como sensibilizadores em células solares
• Beneficiário: Danilo Mustafa
• Modalidade de apoio: Auxílio à Pesquisa - Jovens Pesquisadores