Luminescence Nanothermometry Based on Pr³⁺ : LaF₃ Single Core and Pr³⁺ : LaF₃/LaF₃ Core/Shell Nanoparticles

Figure 6

(a) Normalized at maximum (601 nm) room-temperature luminescence spectra of both core nanoplates and core/shell nanoplates (λ_ex = 444 nm). (b) The luminescence lifetime curves of the ³P₀ state of Pr³⁺ for core nanoplates and core/shell nanoplates at 300 K (λ_ex = 444 nm, λ_em = 486 nm). (c) The luminescence lifetime curves of the ³P₀ state of Pr³⁺ for core nanospheres and core/shell nanospheres at 300 K (λ_ex = 444 nm, λ_em = 486 nm).

(a)

(b)

(c)