Emission-tunable Ba2Y1–Sc NbO6:Bi3+ (0 ≤ x ≤ 1.0) phosphors for white LEDs

Highly efficient and thermostable far-red phosphor for promoting root growth in plants

“…In previous studies, it has been found that introducing Cr 3+ , 14 Fe 3+ , 15,16 Ni 2+ , 17,18 Bi 2+ , 19,20 Eu 2+ , 21,22 and Yb 3+ 23,24 ions in inorganic materials can produce near-infrared photoluminescence. Among these potential candidates, Cr 3+ has become a popular far-red emitting activator applied in plant growth, as it can not only be excited efficiently by blue-violet light but also its emission can be controlled by the crystal field strength.…”

Novel phosphor GdY2SbO7 co-dope with Eu3+ and Bi3+ for optical thermometer

“…The exploitation of the emissions of Bi 3+ and single trivalent rare earth (Re 3+ ) ions can perform the temperature measurement, because they have completely different electronic structures. The fluorescence intensity of Bi 3+ is readily affected by the environment because of its naked 6s electrons, whereas the Re 3+ ions are less affected by temperature due to the outer electronic configuration of 5s 2 5p 6 [ 13 , 14 ]. On the other hand, Bi 3+ ions were used as sensitizer co-doped with Re 3+ in some host materials due to the energy transfer from Bi 3+ to Re 3+ ions.…”