Ytterbium Doped Gadolinium Oxide (Gd₂O₃:Yb³⁺) Phosphor: Topology, Morphology, and Luminescence Behaviour

Figure 7

(a) Absorption PL spectra of Gd₂O₃:Yb³⁺ (4 mol%). (b) Emission PL spectra of Gd₂O₃:Yb³⁺ (4 mol%).

(a)

(b)