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Upconversion in -doped nanocrystals pumped at
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10.1063/1.2844468
/content/aip/journal/jap/103/5/10.1063/1.2844468
http://aip.metastore.ingenta.com/content/aip/journal/jap/103/5/10.1063/1.2844468

Figures

Image of FIG. 1.
FIG. 1.

XRD patterns of different concentrations of doped nanocrystals heated at . The labels indicate monoclinic and tetragonal crystalline phases.

Image of FIG. 2.
FIG. 2.

Frequency upconversion spectra of the studied samples. The labels indicate the corresponding electronic transitions. Excitation wavelength: . Excitation power: .

Image of FIG. 3.
FIG. 3.

Energy level scheme for ions in . The bold upward arrows represent the laser induced transitions. The downward arrows represent luminescence and the dotted arrows represent ET mechanism between pairs.

Image of FIG. 4.
FIG. 4.

Frequency upconversion signal intensity as a function of incident laser power for transition of the sample containing . Squares are experimental data and the curves are best fits.

Image of FIG. 5.
FIG. 5.

Frequency upconversion signal intensity as a function of incident laser power for transition of the sample containing . Squares are experimental data and the curves are best fits.

Tables

Generic image for table
Table I.

Parameters used to compare the predictions of Eqs. (2)–(8) with the experimental data.

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/content/aip/journal/jap/103/5/10.1063/1.2844468
2008-03-07
2014-04-25
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Upconversion in Er3+-doped ZrO2 nanocrystals pumped at 1.426μm
http://aip.metastore.ingenta.com/content/aip/journal/jap/103/5/10.1063/1.2844468
10.1063/1.2844468
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