Selective Synthesis and Luminescence Properties of Nanocrystalline GdF3:Eu<sup>3+</sup>
 with Hexagonal and Orthorhombic Structures

<table>XRD patterns of the samples synthesized with (a) NaBF<sub>4</sub>, (b) NaF, and (c) NH<sub>4</sub>F.</table>

Journal of Nanomaterials

Figure 1: Selective Synthesis and Luminescence Properties of Nanocrystalline GdF3:Eu<sup>3+</sup>
 with Hexagonal and Orthorhombic Structures 