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A strategy for calibrating the actual quantum efficiency of quantum cutting in YVO4:Bi3+(Nd3+), Yb3+
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Image of FIG. 1.
FIG. 1.

XRD patterns of YVO4: Yb3+/Bi3+ samples. The tetragonal-phase YVO4 pattern from the JCPDS database is also shown for reference. The right inset is the partial magnification peaks of the as-prepared samples. The left inset shows the TEM of the sample.

Image of FIG. 2.
FIG. 2.

(a) The scheme of energy transfer process from Bi3+ to Yb3+. (b) the scheme of mechanism for downconversion with Nd3+ and Yb3+ couple.

Image of FIG. 3.
FIG. 3.

(a) Visible-infrared emission spectra of YVO4:(0%-20%)Yb3+/Bi3+ samples upon excitation of 355 nm. (b) The integrated visible and infrared emissions dependence on the concentration of Yb3+.

Image of FIG. 4.
FIG. 4.

Fluorescence dynamic curves of Bi3+ emission at 535 nm under the excitation of 355 nm for YVO4: (0%–20%)Yb3+/Bi3+ samples. The inset shows the lifetime of the different concentration of Yb3+.

Image of FIG. 5.
FIG. 5.

Excitation spectra of YVO4: 1% Nd3+, 10% Yb3+ sample monitoring the emission at 983 nm, and emission spectra of the sample excited with 478 nm.


Generic image for table
Table I.

NIR-QC of Bi3+,Yb3+ ion pairs doped in different materials: hosts, concentration, and estimated optimum QE by luminescent dynamics.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: A strategy for calibrating the actual quantum efficiency of quantum cutting in YVO4:Bi3+(Nd3+), Yb3+