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Optical and electron paramagnetic resonance spectroscopies of diffusion-doped
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10.1063/1.2188030
/content/aip/journal/jap/99/7/10.1063/1.2188030
http://aip.metastore.ingenta.com/content/aip/journal/jap/99/7/10.1063/1.2188030

Figures

Image of FIG. 1.
FIG. 1.

Absorption spectra in the visible region from (a) samples , , , and at room temperature, and (b) sample (solid line) and sample (dotted line) at . The vertical scales are logarithmic.

Image of FIG. 2.
FIG. 2.

Infrared absorption at from (a) sample , (b) sample , (c) sample , and (d) sample . Note the different linear vertical scales and the small vertical range for (c). The longer wavelength regions for (a), (b), and (d) are enhanced by the factors shown. There is an additional band near marked with an asterisk in (a).

Image of FIG. 3.
FIG. 3.

Infrared absorption due to at room temperature from samples .

Image of FIG. 4.
FIG. 4.

PL spectra at from (a) sample and (b) sample under excitation using a power density of . The spectra are vertically offset for clarity, and the spectrum from sample has been enhanced by a factor of 3.

Image of FIG. 5.
FIG. 5.

emission from sample under excitation at 10, 100, and . The excitation power density was . Two of the curves have been enhanced by the factors shown.

Image of FIG. 6.
FIG. 6.

Integrated intensity of the emission vs temperature from (a) sample (solid squares) and (b) sample (open circles) under excitation. The maximum intensity for each curve is normalized.

Image of FIG. 7.
FIG. 7.

Lifetime of the emission vs temperature: sample (solid squares), sample (solid diamonds), sample (open diamonds), and sample (solid circles). Excitation was provided by a chopped Ti:Sapphire laser.

Image of FIG. 8.
FIG. 8.

EPR spectrum from sample at with the magnetic field along a [111] direction.

Image of FIG. 9.
FIG. 9.

EPR spectra taken from Co:ZnSe sample : (a) taken at , and (b) taken at . Illumination with light produced changes in these EPR signal intensities. The EPR signal due to increased, and the EPR signal due to decreased.

Tables

Generic image for table
Table I.

Annealing conditions, sample thicknesses, and concentrations for diffusion-doped Co:ZnSe samples. The dopant concentrations were obtained using room temperature absorption data at and an absorption cross section3 , and using the EPR spectra at near for each of the samples.

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/content/aip/journal/jap/99/7/10.1063/1.2188030
2006-04-12
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Optical and electron paramagnetic resonance spectroscopies of diffusion-doped Co2+:ZnSe
http://aip.metastore.ingenta.com/content/aip/journal/jap/99/7/10.1063/1.2188030
10.1063/1.2188030
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