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. 2011 Oct 3;6(1):539. doi: 10.1186/1556-276X-6-539

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Copyright ©2011 Shan et al; licensee Springer.

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/2.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Characterization data for NaYF₄: 20% Yb³⁺, 2% Er³⁺UCNPs after annealing. (A) TEM image. (B) XRD pattern (cubic phase is marked with asterisks) and the calculated line pattern for hexagonal phase of NaYF₄(JCPDS card, No. 28-1192).