1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Mn-activated Na2SiF6 red and yellowish-green phosphors: A comparative study
Rent:
Rent this article for
USD
10.1063/1.3639298
/content/aip/journal/jap/110/6/10.1063/1.3639298
http://aip.metastore.ingenta.com/content/aip/journal/jap/110/6/10.1063/1.3639298
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(Color online) Photographs of (a) Na2SiF6:Mn4+ and (b) Na2SiF6:Mn2+ under white and UV light illuminations.

Image of FIG. 2.
FIG. 2.

(Color online) (a) SEM image of Na2SiF6:Mn2+. (b) XRD trace observed from Na2SiF6:Mn2+ together with the refraction pattern obtained from the American Society for Testing and Materials (ASTM) card for trigonal Na2SiF6 (a = 0.8859 nm, c = 0.5038 nm; #01-078-0393).

Image of FIG. 3.
FIG. 3.

(Color online) EPMA trace of Na2SiF6:Mn2+.

Image of FIG. 4.
FIG. 4.

(Color online) PL and PLE spectra of (a) Na2SiF6:Mn4+ and (b) Na2SiF6:Mn2+ at 300 K.

Image of FIG. 5.
FIG. 5.

(Color online) PL and PLE spectra of (a) Na2SiF6:Mn4+ and (b) Na2SiF6:Mn2+ at 20 K.

Image of FIG. 6.
FIG. 6.

(Color online) PL and PLE spectra in4 A 2 g 2 Eg transition region of Na2SiF6:Mn4+ at 20 K. The ZPL transition is at ∼2.010 eV.

Image of FIG. 7.
FIG. 7.

(Color online) PLE spectra in 4 A 2 g 4 T 2 g transition region of Na2SiF6:Mn4+ at (a) 300 K and (b) 20 K. The vertical bars show the results calculated using Eq. (3) with (a) S = 4 and (b) S = 3. The ZPL energies obtained here are (a) 2.45 eV and (b) 2.57 eV.

Image of FIG. 8.
FIG. 8.

(Color online) PL spectra of Na2SiF6:Mn2+ at (a) 300 K and (b) 20 K. The vertical bars show the results calculated using Eq. (5) with (a) S = 5 and (b) S = 9. The ZPL energies obtained here are (a) 2.45 eV and (b) 2.79 eV.

Image of FIG. 9.
FIG. 9.

(Color online) PL and diffuse reflectance spectra R of (a) MnF2 and (b) Na2SiF6:Mn2+ at room temperature. MnF2 was prepared by reacting Mn shots with 25% HF acid. Peak assignments of A–F correspond to those for 3d 5 (Mn2+) configuration.

Image of FIG. 10.
FIG. 10.

(a) Integrated red emission intensity I PL and (b) red emission decay time τ vs reciprocal temperature 1/T for Na2SiF6:Mn4+. The solid lines in (a) and (b) show the results calculated using Eqs. (6) and (8), respectively.

Image of FIG. 11.
FIG. 11.

Temperature-dependent PL spectra of Na2SiF6:Mn2+ between 20 and 300 K, recorded in 20 K increments.

Image of FIG. 12.
FIG. 12.

(a) Integrated yellowish-green emission intensity I PL and (b) yellowish-green emission decay time τ vs reciprocal temperature 1/T for Na2SiF6:Mn2+. The bold and light solid lines in (a) show the results calculated using Eqs. (6) and (7), respectively, while the solid line in (b) represents the result calculated using Eq. (8).

Image of FIG. 13.
FIG. 13.

(Color online) Schematic representation of Na2SiF6:Mn4+ and Na2SiF6:Mn2+ (MnSiF6) phosphor lattices.

Image of FIG. 14.
FIG. 14.

ESR spectra of (a) pure Na2SiF6, (b) Na2SiF6:Mn4+, and (c) Na2SiF6:Mn2+.

Image of FIG. 15.
FIG. 15.

(Color online) Schematic energy level diagram of (a) Mn4+ and (b) Mn2+ in Na2SiF6.

Loading

Article metrics loading...

/content/aip/journal/jap/110/6/10.1063/1.3639298
2011-09-22
2014-04-19
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Mn-activated Na2SiF6 red and yellowish-green phosphors: A comparative study
http://aip.metastore.ingenta.com/content/aip/journal/jap/110/6/10.1063/1.3639298
10.1063/1.3639298
SEARCH_EXPAND_ITEM