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<table>Absorption spectra of Y<sub>2</sub>O<sub>3</sub>:Er<sup>3+</sup>, Yb<sup>3+</sup> nanorods.</table>

Journal of Nanomaterials

fig4

Figure 4

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Journal of Nanomaterials

Dynamics of the Green and Red Upconversion Emissions in --Codoped Nanorods

Figure 4