Persistent phosphors emitting in the ultraviolet(UV)spectral region have attracted great attention in recent years,owing to their promising potential in many advanced applications ranging from photocatalysis to photot...Persistent phosphors emitting in the ultraviolet(UV)spectral region have attracted great attention in recent years,owing to their promising potential in many advanced applications ranging from photocatalysis to phototherapy.Here,we report the development of a novel UVA emissive persistent phosphor by doping Bi^(3+)into a LiScGeO_(4) host.The LiScGeO_(4):Bi^(3+)persistent phosphor can be effectively charged using a standard 254 nm UV lamp and emits intense,long-lasting persistent luminescence peaking at 365 nm for longer than 120 h.Besides,the UVA persistent luminescence from the pre-irradiated LiScGeO_(4):Bi^(3+)phosphor can be repeatedly rejuvenated by short-time photostimulation with low-energy white,red and near-infrared(NIR)light.The long-lasting UVA afterglow,together with the photostimulated persistent luminescence(PSPL)capability,makes the LiScGeO_(4):Bi^(3+)phosphor an important element of persistent luminescence materials in the UVA spectral region.This UVA persistent phosphor is expected to find exciting applications in the fields of medical therapy and environmental research.展开更多
基金financial support from the National Natural Science Foundation of China(grant no.51902184)Shandong Provincial Natural Science Foundation(grant no.ZR2019BEM028)+3 种基金the“Qi-Lu Young Scholar Fund”(grant no.31370088963167)from Shandong Universitythe financial support from the Natural Science Foundation of Jiangsu Province(BK20180230)China Postdoctoral Science Foundation(2018M632673)Fundamental Research Funds of Shandong University(2019JCG004).
文摘Persistent phosphors emitting in the ultraviolet(UV)spectral region have attracted great attention in recent years,owing to their promising potential in many advanced applications ranging from photocatalysis to phototherapy.Here,we report the development of a novel UVA emissive persistent phosphor by doping Bi^(3+)into a LiScGeO_(4) host.The LiScGeO_(4):Bi^(3+)persistent phosphor can be effectively charged using a standard 254 nm UV lamp and emits intense,long-lasting persistent luminescence peaking at 365 nm for longer than 120 h.Besides,the UVA persistent luminescence from the pre-irradiated LiScGeO_(4):Bi^(3+)phosphor can be repeatedly rejuvenated by short-time photostimulation with low-energy white,red and near-infrared(NIR)light.The long-lasting UVA afterglow,together with the photostimulated persistent luminescence(PSPL)capability,makes the LiScGeO_(4):Bi^(3+)phosphor an important element of persistent luminescence materials in the UVA spectral region.This UVA persistent phosphor is expected to find exciting applications in the fields of medical therapy and environmental research.
