Tunable visible light and energy transfer mechanism in Tm3+ and silver nanoclusters within co-doped GeO2-PbO glasses
Carregando...
Data
2023
Data de publicação:
Autores IPEN
Orientador
Título da Revista
ISSN da Revista
Título do Volume
É parte de
É parte de
É parte de
Micromachines
ODS
Exportar
Resumo
This study introduces a novel method for producing Ag nanoclusters (NCs) within GeO2-PbO glasses doped with Tm3+ ions. Sample preparation involved the melt-quenching method, employing adequate heat treatment to facilitate Ag NC formation. Absorption spectroscopy confirmed trivalent rare-earth ion incorporation. Ag NC identification and the amorphous structure were observed using transmission electron microscopy. A tunable visible emission from blue to the yellow region was observed. The energy transfer mechanism from Ag NCs to Tm3+ ions was demonstrated by enhanced 800 nm emission under 380 and 400 nm excitations, mainly for samples with a higher concentration of Ag NCs; moreover, the long lifetime decrease of Ag NCs at 600 nm (excited at 380 and 400 nm) and the lifetime increase of Tm3+ ions at 800 nm (excitation of 405 nm) corroborated the energy transfer between those species. Therefore, we attribute this energy transfer mechanism to the decay processes from S1→T1 and T1→S0 levels of Ag NCs to the 3H4 level of Tm3+ ions serving as the primary path of energy transfer in this system. GeO2-PbO glasses demonstrated potential as materials to host Ag NCs with applications for photonics as solar cell coatings, wideband light sources, and continuous-wave tunable lasers in the visible spectrum, among others.
Como referenciar
NISHIMURA, MARCOS V. de M.; AMARO, AUGUSTO A.; BORDON, CAMILA D. da S.; DIPOLD, JESSICA; WETTER, NIKLAUS U.; KASSAB, LUCIANA R.P. Tunable visible light and energy transfer mechanism in Tm3+ and silver nanoclusters within co-doped GeO2-PbO glasses. Micromachines, v. 14, n. 11, p. 1-14, 2023. DOI: 10.3390/mi14112078. Disponível em: https://repositorio.ipen.br/handle/123456789/47875. Acesso em: 06 Oct 2024.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.