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PersL and ML of Li0.995Ga5O8:0.005Pr3+
(A) Comparison between ML and persistent luminescence (PersL) spectra of Li0.995Ga5O8:0.005Pr3+. PersL was detected at the delay time of 2 s after pre-irradiation by a 254 nm lamp for 60 s.
(B) Energy level diagrams of Pr3+ ion and corresponding emission wavelengths. Reproduced with permission from (Xiong et al., 2019b). Copyright 2019 WILEY.
