Upconversion Emission of Infrared Excited Er3+-Doped Transparent Glass Ceramics Containing CaF2 Nano-Crystals

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Upconversion luminescence of Er3+-doped SiO2-Al2O3-CaO-NaF-CaF2 transparent glass ceramics under 980 nm excitation was investigated. XRD and TEM experiments revealed the homogeneous distribution of CaF2 nano-crystals among the glassy matrix. Intense red upconversion signal was recorded and its intensity increased with the increasing of heating temperature and Er3+-doping level at the range of 0.1 to 1.0 mol%. When Er3+ doping reached 2 mol%, the concentration quenching effect appeared. All these results could be due to the incorporation of Er3+ ions into precipitated CaF2 nano-crystals. The quadratic pump power dependence of the upconversion luminescence intensity indicated that the transition mechanism of the red emission was due to two-photon absorption processes.

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Periodical:

Key Engineering Materials (Volumes 336-338)

Edited by:

Wei Pan and Jianghong Gong

Pages:

1846-1848

DOI:

10.4028/www.scientific.net/KEM.336-338.1846

Citation:

D. Q. Chen et al., "Upconversion Emission of Infrared Excited Er3+-Doped Transparent Glass Ceramics Containing CaF2 Nano-Crystals", Key Engineering Materials, Vols. 336-338, pp. 1846-1848, 2007

Online since:

April 2007

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$35.00

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