Upconverting ultraviolet light source with extended emission wavelengths based on Bi3+-activated phosphor

Recent progress on modulating luminescence thermal quenching properties of Bi3+-activated phosphors

“…Constructing energy transfers from other sensitizer ions to Bi 3+ is challenging work. Up-conversion is one possible approach, such as the energy transfer of Pr 3+ → Bi 3+ through the special 4f5d energy level of Pr 3+ in YBO 3 :Pr 3+ ,Bi 3+ phosphors observed by Zhao et al 54 Unfortunately, few investigations have focused on the thermal quenching properties of Bi 3+ . Accordingly, we focus on the energy transfer from the host → Bi 3+ and Bi 3+ → R n + to modulate the thermal quenching properties of Bi 3+ , as shown in Fig.…”