“…Inorganic scintillating materials have been broadly used in many fields, such as medical CT [ 6 , 7 ], high-energy physics [ 8 , 9 ] and industrial nondestructive testing [ 10 , 11 ]. Conventional oxide scintillators, such as Bi 4 Ge 3 O 12 (BGO) [ 12 ], PbWO 4 (PWO) [ 13 ] and Lu 2 SiO 5 : Ce (LSO: Ce) [ 14 ] show fast response and good chemical stability, while the halide scintillators, such as NaI (TI), CsI (TI) [ 15 ], LaCl 3 : Ce [ 16 ] and CaF 2 : Ce [ 17 ], have high luminous efficiency. For example, BaY 2 F 8 : Tb exhibited strong scintillation luminescence centered at 545 nm, and the intensity was about twice than that of CsI (Tl) [ 18 ].…”