Tuning multicolor emission in AgNCs/Tm3+/Mn2+-doped fluorophosphate glasses

Autor(es)

Fares, Hssen ^[1] ; Castro, Tarcio ^[2] ; Franco, Douglas Faza ^[1] ; Fucikova, Anna ^[2] ; da Silva, Robson R. ^[3] ; Valenta, Jan ^[2] ; Ribeiro, Sidney J. L. ^[1] ; Nalin, Marcelo ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ, UNESP, Inst Chem, BR-14800060 Araraquara, SP - Brazil

^[2] Charles Univ Prague, Fac Math & Phys, Dept Chem Phys & Opt, Ke Karlovu 3, Prague 12116 2 - Czech Republic

^[3] Chalmers Univ Technol, Dept Chem & Chem Engn, SE-41296 Gothenburg - Sweden

• Tipo de documento: Artigo Científico
• Fonte: Journal of Non-Crystalline Solids; v. 535, MAY 1 2020.
• Citações Web of Science: 0

Resumo

Herein we report the synthesis of highly-doped silver nanocluster in fluorophosphate glasses through the melting-quenching method in order to achieve sensitization with Tm3+ and Mn2+ ions. Blue and red emission belonging to Tm3+ (470 to 490 nm) and Mn2+ (550 to 750 nm) ions could be obtained via non-resonant excitation of Tm3+ and Mn2+. Slight decrease of the fluorescence decay times confirmed an energy transfer as a possible mechanism to explain the Tm3+ and Mn2+ emission. The composition of 5 mol% of AgNO3, 0.4 mol% of Tm2O3 and 0.2 mol% of MnF2 in our sample leads to distance between donor (silver nanoclusters) and acceptor (Tm3+-Mn2+) as short as 11 angstrom, which suggests that the main mechanism for blue and red emission from Tm3+ and Mn2+ is Forster Resonance Energy Transfer (FRET). The results presented here show that the studied material has potential application for multicolor generation as luminophore in white light emitting diodes (W-LED). (AU)

• Processo FAPESP: 16/16343-2 - Síntese e caracterização de vidros e vitrocerâmicas transparentes contendo íons terras raras
• Beneficiário: Hssen Fares
• Linha de fomento: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 13/07793-6 - CEPIV - Centro de Ensino, Pesquisa e Inovação em Vidros
• Beneficiário: Edgar Dutra Zanotto
• Linha de fomento: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs
• Processo FAPESP: 16/16900-9 - Preparação de fibras de vidros óxidos de metal pesado com propriedades ópticas e magneto-ópticas
• Beneficiário: Douglas Faza Franco
• Linha de fomento: Bolsas no Brasil - Pós-Doutorado