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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

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

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Author(s):
Silva, O. B. [1, 2] ; Rivera, V. A. G. [3] ; Ledemi, Y. [4] ; Messaddeq, Y. [4] ; Marega Jr, E.
Total Authors: 5
Affiliation:
[1] Univ Sao Paulo, Inst Fis Sao Carlos, BR-13560970 Sao Carlos, SP - Brazil
[2] Univ Estadual Piaui, Campus Prof Antonio Giovani Alves de Sousa, Piripiri, PI - Brazil
[3] Univ Nacl Mayor San Marcos, Fac Ciencias Fis, Lima - Peru
[4] Univ Laval, Ctr Opt Photon & Laser, Quebec City, PQ G1V 0A6 - Canada
Total Affiliations: 4
Document type: Journal article
Source: Journal of Luminescence; v. 232, APR 2021.
Web of Science Citations: 3
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 meltquenching 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 (Omega(lambda)), 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 degrees C) of the glasses was verified on introducing GeO2. (AU)

FAPESP's process: 13/07276-1 - CEPOF - Optics and Photonic Research Center
Grantee:Vanderlei Salvador Bagnato
Support Opportunities: Research Grants - Research, Innovation and Dissemination Centers - RIDC