White light and multicolor emission tuning in Ag nanocluster doped fluorophosphate glasses

Autor(es)

Fares, Hssen ^[1] ; Castro, Tarcio ^[1] ; Orives, Juliane Resges ^[1] ; Franco, Douglas Faza ^[1] ; Nalin, Marcelo ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ, Inst Chem, UNESP, POB 355, BR-14800060 Araraquara, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: RSC ADVANCES; v. 7, n. 70, p. 44356-44365, 2017.
• Citações Web of Science: 6

Resumo

The emission properties of Ag nanoclusters (Ag NCs) dispersed in a transparent fluorophosphate glass host have been studied. The as-prepared glass shows that the Ag NCs emit a broad white emission band almost covering the entire visible region. By changing the excitation wavelength it is possible to tune the emission from blue to yellow. The spectral width of the white light is most likely due to the presence of a variety of Ag NCs with different sizes, particularly emitting in the blue, green and red regions. The possible interaction mechanism between the different Ag species was also elucidated. The observed results provide a new platform to acquire a broad band tunable light source. (AU)

• Processo FAPESP: 16/16343-2 - Síntese e caracterização de vidros e vitrocerâmicas transparentes contendo íons terras raras
• Beneficiário: Hssen Fares
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 13/07793-6 - CEPIV - Centro de Ensino, Pesquisa e Inovação em Vidros
• Beneficiário: Edgar Dutra Zanotto
• Modalidade de apoio: Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs