Li2B4O7 glass exhibits photo-darkening suppression due to copper nanoparticles

We found evidence of reduction in photo-darkening due to the presence of copper nanoparticles (CNP) in lithium borate glasses doped with Ce 3+ and Tm 3+ . This phenomenon is attributed to plasmon effect produced by the CNP, which potentiates the effect of Ce 3+ in the process of avoiding photo-darke...

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Veröffentlicht in:Applied physics. A, Materials science & processing Materials science & processing, 2022-03, Vol.128 (3), Article 171
Hauptverfasser: Elias, Janet A., Diaz-Torres, Luis A., Gomez-Solis, Christian, Montes, Eduardo, Toscano, Gerardo, Vallejo, Miguel A.
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container_issue 3
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container_title Applied physics. A, Materials science & processing
container_volume 128
creator Elias, Janet A.
Diaz-Torres, Luis A.
Gomez-Solis, Christian
Montes, Eduardo
Toscano, Gerardo
Vallejo, Miguel A.
description We found evidence of reduction in photo-darkening due to the presence of copper nanoparticles (CNP) in lithium borate glasses doped with Ce 3+ and Tm 3+ . This phenomenon is attributed to plasmon effect produced by the CNP, which potentiates the effect of Ce 3+ in the process of avoiding photo-darkening in the glass samples. Glass samples were made by a melt-quenching technique. Fluorescence emission and absorption spectra present the characteristic peaks of Ce 3+ and Tm 3+ . Decompression of glass network has been observed due to changes in density and average boron–boron separation in all the samples. We have calculated the optical band gap which increase due to the increase of CNP. To investigate the glass photo-darkening transmittance of all the samples was measured after 1, 2, 3, 4, 5, 6, 18, 24, 90, 120 and 180 h exposed to radiation.
doi_str_mv 10.1007/s00339-022-05310-9
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subjects Absorption spectra
Applied physics
Boron
Cerium
Characterization and Evaluation of Materials
Condensed Matter Physics
Copper
Emission spectra
Fluorescence
Lithium borates
Machines
Manufacturing
Materials science
Nanoparticles
Nanotechnology
Optical and Electronic Materials
Photodarkening
Physics
Physics and Astronomy
Processes
Surfaces and Interfaces
Thin Films
title Li2B4O7 glass exhibits photo-darkening suppression due to copper nanoparticles
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