Fig. 5: Persistent luminescence properties.

a PersLE and PLE spectra of BLAGSO:0.05Ce³⁺, 0.01Bi³⁺. b PersL spectra of BLAGSO:0.05Ce³⁺, yBi³⁺. Inset: the PersL intensity of BLAGSO:0.05Ce³⁺, yBi³⁺. c PersL decay curves of BLAGSO:0.05Ce³⁺, yBi³⁺. d Normalized PersL decay curves of BLAGSO:0.05Ce³⁺, yBi³⁺. Inset: the values of τ₈₀ for BLAGSO:0.05Ce³⁺, yBi³⁺. e Normalized PersL decay curves of BLAGSO:0.05Ce³⁺, 0.01Bi³⁺ and SMSO:Eu²⁺, Dy³⁺. f PersL photographs of BLAGSO:0.05Ce³⁺, BLAGSO:0.05Ce³⁺, 0.01Bi³⁺, and SMSO:Eu²⁺, Dy³⁺ after excitation at 254, 365, 425 nm, and daylight, respectively