Photoluminescence and Structural Analysis of Er3+/Yb3+/Tm3+ Triply Doped Gd2O3
Loading...
Files
External sources
External sources
Date
Advisor
Coadvisor
Graduate program
Undergraduate course
Journal Title
Journal ISSN
Volume Title
Publisher
Brazilian Chemical Soc
Type
Article
Access right
Acesso restrito
Files
External sources
External sources
Abstract
Spectroscopic and structural properties of Er3+:Yb3+:Tm3+ triply doped Gd2O3 nanocrystals were investigated. The effect of heat treatment at 800, 900, 1000 and 1100 degrees C for 4h, on the luminescence and the energy upconversion emissions (excited at 980nm) in the visible and near infrared spectral regions was discussed. The doping process with RE3+ was effective on Gd2O3 cubic phase, and structural parameters were determined for this phase. The morphology of the particles did not present significant differences on shape and size, demonstrating the reproducibility of the synthesis methods. Infrared to visible upconversion as well as infrared emissions at 1550nm were detected, suggesting that energy transfer processes from Yb3+ to Er3+ are predominant in Gd2O3:Yb3+:Er3+:Tm(3+)samples. The results pointed out the potential of Gd2O3:Yb3+:Er3+:Tm3+ as a material for solar concentrators and optical telecom C-band (1550nm) applications.
Description
Keywords
PEG, up-conversion, Er3+:Tm3+:Yb3+, Gd2O3, infrared emission
Language
English
Citation
Revista Virtual De Quimica. Niteroi: Brazilian Chemical Soc, v. 9, n. 6, p. 2257-2271, 2017.
