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

Figure 2

FE-SEM images of the as-prepared precursor Lu(OH)₃:Yb³⁺, Ho³⁺: (a) low magnification, (b) high magnification and obtained FE-SEM images of target Lu₂O₃:Yb³⁺, Ho³⁺, (c) low magnification, (d) high magnification, and (e) EDS of the obtained Lu₂O₃:Yb³⁺, Ho³⁺ nanocubic sheets.

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