Downconversion from ultra violet to near infer red region in novel Yb 3+ doped LiSrVO 4 phosphor

Emission enhancement in the luminescence performance of warm red light‐emitting LiSrVO4:Pr3+ phosphors

“…Figure 2 shows the SEM micrographs of 3 mol% Pr 3+ ‐doped phosphors. The SEM images reflected the porous, sponge‐like, nonuniformity in the structure [18]. From the images, it was found that the shapes of the particles were irregular and agglomerated, which was due to the high temperature involved [19].…”

A bacterial cellulose-based LiSrVO4:Eu3+ nanosensor platform for smartphone sensing of levodopa and dopamine: point-of-care diagnosis of Parkinson's disease

“…The host lattice has an absorption band at 330 nm, which is generally related to the excitation from the filled oxygen 2p states of the valence band to the vacant vanadium 3d levels of the conduction band (O 2− → V 5+ ). 72 It can be also attributed to the charge transfer from the 1 A 1 ground state to the 1 T 1 and 1 T 2 excited states of (VO 4 ) 3− groups. 73 Thus, after excitation at 330 nm and charge transfers, the host lattice exhibits an emission spectrum with a broad, intense band at 400–700 nm which is centered at 512 nm ( Fig.…”

Yb3+ Doping Monoclinic Lu2WO6: Near-Infrared Emission and Energy-Transfer Luminescence Mechanism

“…For downconversion emission, activator Yb 3+ was doped into self-activated luminescence materials such as tungstates, vanadates, and nirobates. − An strong NIR emission was displayed because of energy migration from host to Yb 3+ . If the matrix with a large band gap ( E gap ) was not excited by UV light, Yb 3+ emission was obtained by codoping other activated ions such as Bi 3+ , Gd 3+ –Tb 3+ , Ce 3+ , Tm 3+ , Ho 3+ , and Er 3+ .…”