Optical and structural properties of neodymium-doped KPO3-MoO3 glasses
Glasses of composition (mol%) 75KPO3-(25-x)MoO3-xNd3 +, with 0 ≤ x ≤ 1.0, have been prepared and characterized. Thermal and structural properties of the glasses were studied by Differential Scanning Calorimetry (DSC) and Raman scattering spectroscopy. The thermal stability against crystallization on...
| Autores: | , , , , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2017 |
| País: | Brasil |
| Institución: | Universidade Estadual Paulista (UNESP) |
| Repositorio: | Repositório Institucional da UNESP |
| Idioma: | inglés |
| OAI Identifier: | oai:repositorio.unesp.br:11449/178491 |
| Acceso en línea: | http://dx.doi.org/10.1016/j.jnoncrysol.2016.12.002 http://hdl.handle.net/11449/178491 |
| Access Level: | acceso abierto |
| Palabra clave: | Lifetime Nd3 + ions Optical properties Phosphate glasses |
| Sumario: | Glasses of composition (mol%) 75KPO3-(25-x)MoO3-xNd3 +, with 0 ≤ x ≤ 1.0, have been prepared and characterized. Thermal and structural properties of the glasses were studied by Differential Scanning Calorimetry (DSC) and Raman scattering spectroscopy. The thermal stability against crystallization on heating was evaluated. Absorption spectra in the visible and infrared regions were collected and analysed, and photoluminescence excitation and emission spectra were obtained under 804 nm diode laser excitations. Using the Judd-Ofelt formalism, the Ω2, Ω4, and Ω6 parameters and the radiative lifetime (τr) were calculated for the 4F3/2 excited state. A fluorescence quantum efficiency for this level (QE = τf / τr) of 58% was determined for glass with x = 0.6. |
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