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Ultraviolet-driven white light generation from oxyfluoride glass co-doped with Tm3+-Tb3+-Eu3+
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10.1063/1.4803448
/content/aip/journal/apl/102/16/10.1063/1.4803448
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/16/10.1063/1.4803448
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Figures

Image of FIG. 1.
FIG. 1.

Emission (color lines) and excitation (black lines) spectra of single, 3.5 mol. % doped, Tm3+ (a), Tb3+ (b), and Eu3+ (c) OF glasses; the respective excitation of 365 nm and detection wavelengths are labeled in the square insets. The respective emission and excitation transitions are also post-signed according to the energy level diagram of Fig. 3 . Chromaticity CIE diagram in (d) indicates an emission color of the single doped with Tm3+, Tb3+, and Eu3+ OF glasses when all dopants are excited at the same wavelength of 365 nm. The white zone indicates a white light gamut area, and the black dot indicates the color of black body (solar) radiation at 6667 K.

Image of FIG. 2.
FIG. 2.

Emission (a) and excitation ((b)–(d)) spectra of TTE co-doped OF glasses with post-signed doping levels. The excitation wavelength in (a) was 365 nm, and detection wavelengths in (b)–(d) correspond to the respective post-signed emission bands of Tm3+ (b), Tb3+ (c), and Eu3+ (d) co-dopants, according to the energy level diagram of Fig. 3 . CIE chromaticity diagram in (e) indicates an emission color of several TTE doped OF glasses, where Tm3+:Tb3+:Eu3+ ratio as follows: open square: 0.6:0.05:0.05, open triangle: 3.0:0.18:0.32, and open circle: 0.6:1.5:1.5 when excited at 365 nm. Color of 3.0:0.18:0.32 sample excited at 375 nm and 400 nm is represented by triangle with horizontal line and triangle with cross, respectively. The white zone indicates a white light gamut area, and the black dot in this gamut area indicates the color of black body (solar) radiation at 6667 K.

Image of FIG. 3.
FIG. 3.

Energy level diagram for the Tm3+, Tb3+, and Eu3+ co-dopants (taken from Ref. 26 ). Excitation transition at 365 nm is indicated by the black up-headed arrow. The observed blue (for Tm3+), green (for Tb3+), and red (for Eu3+) emission transition are shown by the blue, green, and red down-headed arrows, respectively.

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/content/aip/journal/apl/102/16/10.1063/1.4803448
2013-04-26
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Ultraviolet-driven white light generation from oxyfluoride glass co-doped with Tm3+-Tb3+-Eu3+
http://aip.metastore.ingenta.com/content/aip/journal/apl/102/16/10.1063/1.4803448
10.1063/1.4803448
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