A new path to design near-infrared persistent luminescence materials using Yb3+-doped rare earth oxysulfides

Autor(es)

Machado, Ian Pompermayer ^[1] ; Santos Pedroso, Cassio Cardoso ^[2] ; de Carvalho, Jose Miranda ^[3] ; Teixeira, Veronica de Carvalho ^[4] ; Veloso Rodrigues, Lucas Carvalho ^[1] ; Brito, Hermi Felinto ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Fundamental Chem, Inst Chem, BR-05508000 Sao Paulo, SP - Brazil

^[2] Univ Sao Paulo, Dept Biochem, Inst Chem, BR-05508000 Sao Paulo, SP - Brazil

^[3] Univ Sao Paulo, Inst Phys, BR-05508000 Sao Paulo, SP - Brazil

^[4] Brazilian Ctr Res Energy & Mat CNPEM, Brazilian Synchrotron Light Lab LNLS, BR-13083970 Campinas, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: SCRIPTA MATERIALIA; v. 164, p. 57-61, APR 15 2019.
• Citações Web of Science: 2

Resumo

RE2O2S:Yb3+ and (REOS)-O-2-S-2:Yb3+,Ti,Mg2+ near-infrared persistent luminescence materials (RE3+: La, Gd, Y) were designed based on the efficient red-emitting RE2O2S:Eu3+,Ti,Mg2+, due to the similar ground state level positions between Eu3+ and Yb3+. The Y2O2S:Yb3+,Ti,Mg2+ showed the longest near-infrared (similar to 983 nm) persistent luminescence time (similar to 1 h) when excited at the charge transfer transition, demonstrating that Ti,Mg2+ co-doping enhances the persistent luminescence only for the Y2O2S host. The unprecedented relationship between Eu3+ and Yb3+ persistent luminescence opens a new path in the systematic design of efficient Yb3+-activated persistent luminescence materials e.g. Y2O2S:Yb3+,Ti,Mg2+, which present potential for photonic applications such as bioimaging probes. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 17/09774-0 - Geração e detecção de oxigênio singlete em sistemas complexos para estudos de lesões celulares utilizando nanopartículas apresentando upconversion.
• Beneficiário: Cássio Cardoso Santos Pedroso
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 17/05195-5 - Relações de estrutura-propriedade de materiais inorgânicos luminescentes obtidos por método assistido por radiação micro-ondas
• Beneficiário: Jose Miranda de Carvalho Junior
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado