Broadband spectral conversion of visible light to near-infrared emission via energy transfer from Ce<sup>3+</sup> to Nd<sup>3+</sup>/Yb<sup>3+</sup> in YAG

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Journal Article
Journal of Materials Research, 2011, 26 (5), pp. 689 - 692
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Broadband spectral conversion from visible light to near-infrared radiation in Ce3+-Nd3+/Yb3+ codoped yttrium aluminum garnet is reported. Excitation, emission spectra, and decay curves have been measured to prove the energy transfer from Ce3+ to Nd3+ or Yb3+. The energy transfer efficiencies have been estimated, and the mechanisms of the energy transfer between Ce3+ and Nd 3+/Yb3+ have been proposed. Ce3+-Nd 3+ codoped YAG can obtain more effective emission in the desired near-infrared region (around 1100 nm) through broadband conversion, showing potential application to improve the conversion efficiency of Si solar cells. © 2011 Materials Research Society.
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