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Wide colour gamut generated in triply lanthanide doped sol–gel nano-glass–ceramics

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Abstract

The generation of a wide colour gamut, based on up-conversion of cheap near-infrared photons into the visible range, is of great importance for general lighting appliances and integrated optical devices. Here, we report for the first time on up-conversion luminescence under infrared excitation at 980 nm in Yb3+–Er3+–Tm3+ triply doped sol–gel derived SiO2–LaF3 based nano-glass–ceramics (SOL-YET), containing LaF3 nanocrystals with a size about 13 nm. Efficient simultaneous up-conversion emission of the three primary colours (blue, green and red) gives rise to a balanced white overall emission. The ratio between up-conversion emission bands can be varied by changing pump power intensity resulting in colour tuneable up-conversion phosphor.

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Acknowledgements

The authors would like to thank Gobierno Autónomo de Canarias (PI042005/039), Consejería de Industria, Comercio y Nuevas Tecnologías (IDT-TF-06/022) and Ministerio de Ciencia y Tecnología of Spain Government (FIS 2006-02980) for financial support.

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Correspondence to J. del-Castillo.

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del-Castillo, J., Méndez-Ramos, J., Yanes, A.C. et al. Wide colour gamut generated in triply lanthanide doped sol–gel nano-glass–ceramics. J Nanopart Res 11, 879–884 (2009). https://doi.org/10.1007/s11051-008-9470-4

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  • DOI: https://doi.org/10.1007/s11051-008-9470-4

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