Germanium concentration effects on the visible emission properties of Er3+ in tellurite glasses

O. B. Silva; V. A.G. Rivera; Y. Ledemi; Y. Messaddeq; E. Marega

doi:10.1016/j.jlumin.2020.117808

Germanium concentration effects on the visible emission properties of Er³⁺ in tellurite glasses

O. B. Silva, V. A.G. Rivera, Y. Ledemi, Y. Messaddeq, E. Marega

Research output: Contribution to journal › Article › peer-review

15 Scopus citations

Abstract

The influence of different Germanium dioxide concentration on the structural, thermal, optical and spectroscopic properties of Er³⁺ doped tellurite glasses was carefully investigated. The glasses were prepared by melt-quenching technique. The samples were characterized by UV–visible–near-infrared spectroscopy, downshift emission spectroscopy, Raman spectroscopy, lifetime of green emission and up-conversion under near-infrared laser diode excitation at 975 nm. The Judd-Ofelt analysis was performed based on the absorption spectra of the glasses in order to obtain the Judd-Ofelt parameters (Ω_λ), radiative transition rates, radiative lifetimes and quantum efficiency. The solubility of Er³⁺ into the host vitreous matrix, the enhancement in the luminescence intensity and improvement in the thermal stability (≥ 100 ^∘C) of the glasses was verified on introducing GeO₂.

Original language	English
Article number	117808
Journal	Journal of Luminescence
Volume	232
DOIs	https://doi.org/10.1016/j.jlumin.2020.117808
State	Published - Apr 2021

Bibliographical note

Funding Information:
This research was supported by the brazilian agencies Conselho Nacional de Desenvolvimento Científico e Tecnológico/Instituto Nacional de Óptica e Fotônica ( CNPq /INOF - processes 310925/2017-7 and 234608/2014-5), Centro de Pesquisa em Óptica e Fotônica (CePOF - Fapesp - process 13/07276-1), Coordenação de Aperfeiçoamento Pessoal de Nvel Superior ( CAPES ) and by the Canada Excellence Research Chairs ( CERC ).

Publisher Copyright:
© 2020 Elsevier B.V.

Keywords

Erbium
Germanate glass
Luminescent materials
Tellurite glass

Access to Document

10.1016/j.jlumin.2020.117808

Cite this

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title = "Germanium concentration effects on the visible emission properties of Er3+ in tellurite glasses",

abstract = "The influence of different Germanium dioxide concentration on the structural, thermal, optical and spectroscopic properties of Er3+ doped tellurite glasses was carefully investigated. The glasses were prepared by melt-quenching technique. The samples were characterized by UV–visible–near-infrared spectroscopy, downshift emission spectroscopy, Raman spectroscopy, lifetime of green emission and up-conversion under near-infrared laser diode excitation at 975 nm. The Judd-Ofelt analysis was performed based on the absorption spectra of the glasses in order to obtain the Judd-Ofelt parameters (Ωλ), radiative transition rates, radiative lifetimes and quantum efficiency. The solubility of Er3+ into the host vitreous matrix, the enhancement in the luminescence intensity and improvement in the thermal stability (≥ 100 ∘C) of the glasses was verified on introducing GeO2.",

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AU - Silva, O. B.

AU - Rivera, V. A.G.

AU - Ledemi, Y.

AU - Messaddeq, Y.

AU - Marega, E.

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AB - The influence of different Germanium dioxide concentration on the structural, thermal, optical and spectroscopic properties of Er3+ doped tellurite glasses was carefully investigated. The glasses were prepared by melt-quenching technique. The samples were characterized by UV–visible–near-infrared spectroscopy, downshift emission spectroscopy, Raman spectroscopy, lifetime of green emission and up-conversion under near-infrared laser diode excitation at 975 nm. The Judd-Ofelt analysis was performed based on the absorption spectra of the glasses in order to obtain the Judd-Ofelt parameters (Ωλ), radiative transition rates, radiative lifetimes and quantum efficiency. The solubility of Er3+ into the host vitreous matrix, the enhancement in the luminescence intensity and improvement in the thermal stability (≥ 100 ∘C) of the glasses was verified on introducing GeO2.

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KW - Germanate glass

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