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Na + doping in Cs 3 Cu 2 I 5 elevates the PLQY to 95%. Cs 3 Cu 2 I 5 :Na + γ-ray detector has good energy resolution and high light yield. A breakthrough spatial resolution of 25.6 LP per mm@MTF = 0.2 was achieved for X-ray imaging based on Cs 3 Cu 2 I 5 :Na + @PMMA film.
Lei et al. (Wed,) studied this question.