Divalent and trivalent neodymium photoluminescence in NaMgF3:Nd

Identification and Quantification of Charge Transfer in CaAl2O4:Eu2+,Nd3+ Persistent Phosphor

“…In the literature, a few reports on the luminescence and NIR emission of Nd 2+ have appeared. [41][42][43][44] These reports indicate that the lowest 4f 3 5d state is ≈1 eV for Nd 2+ in MF 2 (M = Ca, Sr, Ba) and at slightly longer wavelengths in the more covalent chlorides and bromides. The onset of the OSL spectrum at 1150 nm reported here is in the same spectral region but further experimental proof is required to assign the OSL spectrum to 4f 4 -4f 3 5d absorption of Nd 2+ .…”

Vacuum ultraviolet photoluminescence of NaMgF3:Sm and NaMgF3:Sm,Ce: energy levels of the lanthanides in NaMgF3:Ln compounds

“…Additionally, the existence of highly stable optically active electron traps in the compound suggests potential applications as a long-term optical data storage material [8]. Furthermore, NaMgF 3 has proven to be a host material in which the luminescence of trivalent and divalent Ln ions can be studied in detail [20][21][22][23][24][25][26][27][28]. However, the construction of HRBE diagrams for fluoride systems poses a challenge to researchers due to the high energies of F − →Ln 3+ CT transitions.…”