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Mn-activated K2ZrF6 and Na2ZrF6 phosphors: Sharp red and oscillatory blue-green emissions
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10.1063/1.4732139
/content/aip/journal/jap/112/1/10.1063/1.4732139
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/1/10.1063/1.4732139
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

XRD traces and SEM images of (a) K2ZrF6:Mn4+ and (b) Na2ZrF6:Mn2+. The XRD patterns obtained from the ASTM cards are also plotted (m-K2ZrF6: #00-044-0843; c-K3ZrF7: #00-010-0372; m-Na2ZrF6: #01-071-1186).

Image of FIG. 2.
FIG. 2.

EPMA spectrum of Na2ZrF6:Mn2+.

Image of FIG. 3.
FIG. 3.

PL and PLE spectra of (a) K2ZrF6:Mn4+ (K3ZrF7:Mn4+) and (b) Na2ZrF6:Mn2+ at 300 K.

Image of FIG. 4.
FIG. 4.

PL spectrum of Na2ZrF6:Mn2+ at 20 K, together with those of K2SiF6:Mn2+ (Ref. 15) and Na2SiF6:Mn2+ (Ref. 16).

Image of FIG. 5.
FIG. 5.

PL spectra measured at temperatures between 20 and 300 K for (a) K2ZrF6:Mn4+ (K3ZrF7:Mn4+) and (b) Na2ZrF6:Mn2+. The dashed line in (a) represents the position of the ZPL energy (∼2.00 eV).

Image of FIG. 6.
FIG. 6.

Integrated PL emission intensity I PL vs temperature T for K2ZrF6:Mn4+ (K3ZrF7:Mn4+) and Na2ZrF6:Mn2+. The light and heavy solid lines show the results calculated using Eqs. (4) and (5), respectively.

Image of FIG. 7.
FIG. 7.

PL spectrum of Na2ZrF6:Mn2+ at 20 K. The vertical bars represent the statistical Poisson distribution given by Eq. (9) with S = 1.

Image of FIG. 8.
FIG. 8.

FT spectrum calculated using Eq. (6) and 20 K PL data in Fig. 7.

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/content/aip/journal/jap/112/1/10.1063/1.4732139
2012-07-05
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Mn-activated K2ZrF6 and Na2ZrF6 phosphors: Sharp red and oscillatory blue-green emissions
http://aip.metastore.ingenta.com/content/aip/journal/jap/112/1/10.1063/1.4732139
10.1063/1.4732139
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