Pubblicazioni

Autori:

González-Suárez, E.; Meza-Rocha, A. N.; Gálvez-Sandoval, J. L. N.; Milan, E.; Speghini, A.; Caldiño, U.

Titolo:

White light emission and laser spectroscopy properties of bismuth-lithium-aluminum-zinc phosphate glasses doped with Dy3+, Eu3+ and co-doped with Dy3+/Eu3+

Anno:

2025

Tipologia prodotto:

Articolo in Rivista

Tipologia ANVUR:

Articolo su rivista

Lingua:

Inglese

Formato:

A Stampa

Referee:

Sì

Nome rivista:

Optical Materials

ISSN Rivista:

0925-3467

N° Volume:

160

Intervallo pagine:

16691-16699

Parole chiave:

phosphate glasses

Breve descrizione dei contenuti:

Spectroscopic investigations of Dy3+, Eu3+ and Dy3+/Eu3+ doped bismuth-lithium-aluminum-zinc phosphate glasses were carried out through analysis of absorption, emission and excitation spectra and decay times. The direct and indirect bandgaps and Urbach energy values were calculated using Tauc's method. Laser parameter values (stimulated emission cross-section, effective bandwidth, gain bandwidth and optical gain) were obtained for the 4F9/2 -> 6H13/2 yellow emission of Dy3+ and 5D0 -> 7F2 red emission of Eu3+ in the singly-doped glasses. The co-doped glass shows emission tonalities neutral white of 4621 K, warm white of 3743 K, orange and reddish-orange, with 39.4 %, 50.8 %, 77.9 % and 90.6 % color purities, under 348, 363, 375 and 393 nm excitations, respectively. Upon 348 nm excitation, europium is sensitized by dysprosium through an energy transfer that could occur from the dysprosium 4F9/2 level to the europium 5D0 and 5D2 levels; in turn, back energy transfer from europium 5D2 level to dysprosium 4F9/2 level could also take place.

Pagina Web:

https://www.sciencedirect.com/science/article/pii/S0272884224042445

Id prodotto:

145424

Handle IRIS:

11562/1160968

ultima modifica:

2 maggio 2025

Citazione bibliografica:

González-Suárez, E.; Meza-Rocha, A. N.; Gálvez-Sandoval, J. L. N.; Milan, E.; Speghini, A.; Caldiño, U., White light emission and laser spectroscopy properties of bismuth-lithium-aluminum-zinc phosphate glasses doped with Dy3+, Eu3+ and co-doped with Dy3+/Eu3+ «Optical Materials» , vol. 160 , 2025 , pp. 16691-16699

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