Energy transfer and multicolor emission in germanate glasses containing Ce3+ and Pr3+ for white light-emitting diodes

Agata Górny; Marta Sołtys; Lidia Zur; Maurizio Ferrari; Giancarlo C. Righini; Wojciech A. Pisarski; Joanna Pisarska

doi:10.1117/12.2306786

17 May 2018 Energy transfer and multicolor emission in germanate glasses containing Ce³⁺ and Pr³⁺ for white light-emitting diodes

Agata Górny, Marta Sołtys, Lidia Zur, Maurizio Ferrari, Giancarlo C. Righini, Wojciech A. Pisarski, Joanna Pisarska

Author Affiliations +

Proceedings Volume 10683, Fiber Lasers and Glass Photonics: Materials through Applications; 106832X (2018) https://doi.org/10.1117/12.2306786
Event: SPIE Photonics Europe, 2018, Strasbourg, France

Abstract

White light emitting devices have attracted great attention for their use in liquid crystal monitor screens and white light emitting diodes (W-LEDs). Glasses singly or doubly doped with lanthanide ions may be good white light emitters. In particular, various glass systems containing Pr³⁺ were studied from this point of view. In this work, germanate glasses doubly doped with Ce³⁺ and Pr³⁺ ions were prepared by traditional melt quenchingtechnique. The excitation and emission spectra of lanthanide ions were measured. The emission bands corresponding to characteristics transitions of Pr³⁺ and transition of Ce³⁺ ions from 5d level to 4f levels (²F_7/2 and ²F_5/2) are quite well observed. It indicates that the energy transfer process between Ce³⁺ and Pr³⁺ ions in germanate glasses occurs. From the emission spectra, the Commission Internationale de I’Eclairage (CIE) chromaticity coordinates (x, y) were calculated in relation to potential application for white LEDs. Luminescence decay analysis is also presented and discussed in details. The obtained results suggest the possibility of using these Ce³⁺/Pr³⁺ co-doped glass systems for future application to white light generation.

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Agata Górny, Marta Sołtys, Lidia Zur, Maurizio Ferrari, Giancarlo C. Righini, Wojciech A. Pisarski, and Joanna Pisarska "Energy transfer and multicolor emission in germanate glasses containing Ce³⁺ and Pr³⁺ for white light-emitting diodes", Proc. SPIE 10683, Fiber Lasers and Glass Photonics: Materials through Applications, 106832X (17 May 2018); https://doi.org/10.1117/12.2306786

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