Effect of Ag nanoparticles on the radiative properties of tellurite glasses doped with Er3+, Yb3+ and Tm3+ ions
Nenhuma Miniatura disponível
Data
2014-11-01
Autores
Silva, G. H.
Holgado, D. P. A.
Anjos, V.
Bell, M. J. V.
Kassab, Luciana Reyes Pires [UNESP]
Amancio, Carlos Taveira [UNESP]
Moncorge, Richard
Título da Revista
ISSN da Revista
Título de Volume
Editor
Elsevier B.V.
Resumo
The present work is devoted to the characterization of the thermal and spectroscopic properties of tellurite glasses, codoped with Er3+, Yb3+ and Tm3+ rare-earth ions and silver nanoparticles (NPs). The techniques used for this investigation were UV-visible and infrared absorption, time-resolved luminescence and thermal lens. Time-resolved luminescence studies indicate efficient Yb3+ --> Er3+ and Yb3+ --> Tm3+ energy transfers and intense Er3+ and Tm3+ mid-infrared emissions around 1550 nm and 1860 nm, respectively. The presence NPs is found to increase the thermal diffusivity of the materials and to shorten the mid-infrared emission lifetime of both the Er3+ and Tm3+ ions. (C) 2014 Elsevier B.V. All rights reserved.
Descrição
Palavras-chave
Glasses, Metallic nanoparticles, Rare earth ions, Energy transfer, Luminescence, Thermal diffusivity
Como citar
Optical Materials. Amsterdam: Elsevier Science Bv, v. 37, p. 281-286, 2014.