Multimode-Responsive Luminescence Smart Platform by Single-Sm3+-Doped Phosphors

Multimode-responsive luminescence materials play pivotal roles both in understanding the fundamental photophysical processes and fabricating smart devices. To obtain inorganic phosphor-based multi-responsive materials, however, triple or even quadruple doping ions or a series of hosts with different compositions are frequently used. In this work, a single-rare-earth-doped phosphor, Sr2YGaO5:Sm3+, with multi-responsive luminescence is first reported. This single-Sm3+-doped phosphor exhibits unique excitation-wavelength, ultraviolet/X-ray charging, and thermal stimulated luminescence-color-changeable features. Further studies confirm that the multimode-responsive luminescence of Sr2YGaO5:Sm3+ is attributed to superior optical integration of the host (Sr2YGaO5) and dopant (Sm3+) emissions under specific stimulation conditions. Importantly, this study provides a novel concept for designing inorganic phosphor-based multifunctional optical materials, which would be conducive to the development of smart platforms.