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Conversion of near-ultraviolet radiation into visible and infrared emissions through energy transfer in doped glasses
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View: Figures


Image of FIG. 1.
FIG. 1.

Visible emission originated from SS glass (a) and STS glass (b), respectively, excited by 320 nm. Each emission spectrum is decomposed into two Gaussian functions.

Image of FIG. 2.
FIG. 2.

Excitation and emission spectra monitored for the -free and doped STS glass. The emission spectra of -free and 2 mol% doped SS glass under 320 nm excitation are also given for comparison.

Image of FIG. 3.
FIG. 3.

Temperature dependent emission spectra of the silicon-oxygen-related defect under 320 nm excitation. The inset shows the normalized integral intensity of visible emission (green circle) and infrared emission (red square) as a function of temperature.

Image of FIG. 4.
FIG. 4.

Time-resolved emission spectra of the infrared emission under 320 nm excitation at 15 K.

Image of FIG. 5.
FIG. 5.

Luminescence decay curves of silicon-oxygen-related defect in -free STS glass (a) and doped STS glass (b), respectively, under 320 nm excitation at different temperatures.

Image of FIG. 6.
FIG. 6.

Temperature dependent energy transfer rate in the doped STS glass.

Image of FIG. 7.
FIG. 7.

Luminescence decay curves of the defects emission at 520 nm under 320 nm excitation.

Image of FIG. 8.
FIG. 8.

concentration dependent energy transfer efficiency.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Conversion of near-ultraviolet radiation into visible and infrared emissions through energy transfer in Yb2O3 doped SrO–TiO2–SiO2 glasses