Low-temperature red long-persistent luminescence of Pr3+ doped NaNbO3 with a perovskite structure

Recent advances in Pr3+-activated persistent phosphors

“…Up to now, many Pr 3+ -doped red persistent phosphors have been reported. Table 1 lists the previously studied Pr 3+ -activated red persistent phosphors due to Pr 3+ 1 D 2 -3 H J emission transitions in the host materials upon irradiation by UV light in the range of 250-360 nm, including CaTiO 3 :Pr 3+ , [56][57][58][59][60][61][62][63][64][65][66] NaNbO 3 :Pr 3+ , 54,67 CdSiO 3 :Pr 3+ , 12,68,69 Ca 2 SnO 4 :Pr 3+ , 70,71 and YPO 4 :Pr 3+ . 72 Through 1 D 2 -3 H J electronic transition, Pr 3+ ion usually emits at B612 nm, an ideal red color for various color display technologies.…”

Identifying and utilizing optical properties in the CaSrNb2O7:Pr3+phosphor at low temperature

“…15,16 However, due to insufficient activation energy at low temperature, it is difficult for carriers in LPL phosphors to escape from the deeper traps. 17–19 Therefore, the development of low temperature LPL phosphors with abundant shallow traps is particularly important. In general, the trap depth of LPL at room temperature is in the range of 0.6–1.0 eV and can be easily modulated by changing the concentration of dopant ions or co-doping with sensitizers to enrich a wide range of applications.…”

Identifying Near‐Infrared Persistent Luminescence in Cr3+‐Doped Magnesium Gallogermanates Featuring Afterglow Emission at Extremely Low Temperature

“…Recently, the concept of low‐temperature long persistent luminescence has been mentioned in the literature, and low‐temperature persistent phosphors would have promising applications in extreme temperature conditions (from −50 to −80 °C), such as virus preservation, biological labeling, optical thermometry, multifunctional textiles, and surface icing indications . For instance, smart clothing requires novel persistent materials which could be applied at extremely low temperature environment in winter .…”