|
Resolution: standard / high Figure 4.
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).
Shan et al. Nanoscale Research Letters 2011 6:539 doi:10.1186/1556-276X-6-539 |
