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Concentration-Dependent Near-Infrared to Visible Upconversion in Nanocrystalline and Bulk Y2O3:Er3+.

✍ Scribed by Fiorenzo Vetrone; John-Christopher Boyer; John A. Capobianco; Adolfo Speghini; Marco Bettinelli


Publisher
John Wiley and Sons
Year
2003
Weight
58 KB
Volume
34
Category
Article
ISSN
0931-7597

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## Abstract The frequency upconversion emissions of NaYF~4~ nanocrystals embedded in transparent glass ceramics codoped with Yb^3+^/Er^3+^, prepared by melt quenching and subsequent heating, were investigated. It was found that, compared with that of the sample singly doped with 0.5Er^3+^, the inte