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

Author(s)

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

Affiliation

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

• Document type: Journal article
• Source: RSC ADVANCES; v. 7, n. 70, p. 44356-44365, 2017.
• Web of Science Citations: 6

Abstract

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)

• FAPESP's process: 16/16343-2 - Synthesis and characterization of glass and glass-ceramics containing rare earth ions
• Grantee: Hssen Fares
• Support Opportunities: Scholarships in Brazil - Post-Doctoral
• FAPESP's process: 13/07793-6 - CEPIV - Center for Teaching, Research and Innovation in Glass
• Grantee: Edgar Dutra Zanotto
• Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC