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Properties of and red phosphors synthesized by wet chemical etching
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10.1063/1.3056375
/content/aip/journal/jap/105/1/10.1063/1.3056375
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/1/10.1063/1.3056375

Figures

Image of FIG. 1.
FIG. 1.

SEM images for (a) and (b) phosphors.

Image of FIG. 2.
FIG. 2.

XRD patterns for (a) and (b) phosphors. (c) Three-dimensional perspective view of the crystallite. The octahedra are graphically emphasized.

Image of FIG. 3.
FIG. 3.

EPMA spectra for (a) and (b) phosphors.

Image of FIG. 4.
FIG. 4.

PL spectra for (a) and (b) phosphors measured at 300 K.

Image of FIG. 5.
FIG. 5.

PL and PLE spectra for phosphor at 300 K. The PLE spectrum was measured by monitoring at , while the PL spectrum was obtained by exciting at . The vertical bars in the PLE spectrum show the calculated results of Eq. (1) with and .

Image of FIG. 6.
FIG. 6.

Tanabe–Sugano energy-level diagram for a system in the octahedral symmetry .

Image of FIG. 7.
FIG. 7.

(a) Diffuse reflectance and (b) optical absorption spectra for phosphor at 300 K.

Image of FIG. 8.
FIG. 8.

Temperature-dependent PL spectra for phosphor between 20 and 300 K.

Image of FIG. 9.
FIG. 9.

PL spectra for (a) , (b) , and (c) phosphors at and 300 K. The spectra were taken from Refs. 7 and 8.

Image of FIG. 10.
FIG. 10.

Positions of (a) ZPL and (b) local vibronic emission peaks vs temperature for phosphor.

Image of FIG. 11.
FIG. 11.

(a) Stokes and anti-Stokes PL intensities in phosphor at . (b) Ratio of anti-Stokes/Stokes intensities vs temperature for phosphor. The solid lines in (a) and (b) represent the calculated results of Eqs. (2) and (4), respectively.

Image of FIG. 12.
FIG. 12.

Integrated red emission intensity vs temperature for (a) and (b) phosphors. The solid lines represent the calculated results of Eq. (8).

Tables

Generic image for table
Table I.

Vibronic modes in and at 300 K (in ). The values are taken from Ref. 8.

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/content/aip/journal/jap/105/1/10.1063/1.3056375
2009-01-09
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Properties of Na2SiF6:Mn4+ and Na2GeF6:Mn4+ red phosphors synthesized by wet chemical etching
http://aip.metastore.ingenta.com/content/aip/journal/jap/105/1/10.1063/1.3056375
10.1063/1.3056375
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