Tunable Thickness and Photoluminescence of Bipyramidal Hexagonal B
-NaYF4 Mic…

Hexagonal B
-NaYF4 was synthesized as capped bipyramidal microdisks solvothermally from yttria (Y2O3), sodium fluoride and ammonium hydrogen fluoride. The microdisks are bound by up to eighteen faces; six {202j3} facets on both the top and bottom of the disk and six radial {101j0} facets around its central band. The overall morphology and particle size can be modified through change of tempe…