Research Article

Oxalic Acid-Assisted Hydrothermal Synthesis and Luminescent of Hexagonal NaYF4:Ln3+ (Ln = Sm, Eu, Yb/Er) Micro/Nanoplates

Figure 1

XRD patterns of the as-prepared β-NaYF4 products at = 0.3 pH = 6, 200°C for 24 h.