Figure 6

Diagrams showing the interfacial structures after ionic relaxation. (a) Interface A: (100) NaCl facet and fluorine-rich (100) NaYF4 facet. (b) Interface B: (100) NaCl facet and cation-rich (100) NaYF4 facet. (c) Interface C: Sodium-rich (111) NaCl facet and (111) NaYF4 facet. (d) Interface D: Chlorine-rich (111) NaCl facet and (111) NaYF4 facet. The interfaces A and B were viewed in the [010] direction; interfaces C and D in the [110] direction.56 Copyright 2012, Wiley-VCH.