Synthesis, Tunable Multicolor Output, and High Pure Red Upconversion Emission of Lanthanide-Doped Lu₂O₃ Nanosheets

Figure 1

XRD patterns of Yb³⁺ and Ho³⁺ codoped Lu₂O₃ powder obtained via a hydrothermal approach (black line); the red lines indicate the standard data of pure cubic Lu₂O₃ structure (JCPDS: 86-2475).