Effect of ambient temperature on optical performances of Eu2+/Ho3+ co-doped Ba2SiO4 phosphors

Persistent luminescence phosphor, as an extraordinary photonic material, is widely used in the many fields ranging from photodynamic therapy to optical data storage. The phosphor is sensitive to the ambient temperature; thus, the ambient temperature of the phosphor is a key in the widespread utilization. Here, the relation between the ambient temperature of Ba 2 SiO 4 :Eu 2+ /Ho 3+ phosphor and the optical performances is evaluated. A warm storge condition is preferred before the excitation, while a low-temperature condition is necessary after charging for the high-intense response. The findings could make a suggestion for the preservation condition of the phosphors in the various applications.