Controllable white light generation from novel BaWO4: Yb3+/Ho3+/Tm3+ nanophosphor by modulating sensitizer ion concentration

ZnAl2O4:Eu3+ Nanoparticle Phosphors Co-doped with Li+ for Red Light-Emitting Diodes

“…Doping of lanthanide ions in a suitable host has been proven as an effective protocol to achieve desired luminescence. − When lanthanides are doped in a host, their ladder-like energy levels split further into Stark sublevels due to the presence of the host material’s ligand field. As the inner 4f shells of the lanthanides are effectively shielded by outer 5s, 5p orbitals, the spectra generated from intra-4f transitions are sharp enough to have high color purity.…”

Preparation and luminescent properties of Ba3Na0.32Nb6O12(Si2O7)2:Eu3+ red phosphors with high color purity

“…Therefore, doping RE 3+ in a suitable host has been proven as an effective method for achieving the desired luminescence. [21][22][23][24][25] Extensive research has been conducted on Eu 3+ ions due to their unique red emissions resulting from 5 D 0 -7 F J ( J = 1, 2, 3, 4) transitions, making them a popular activator for efficient red phosphors. 26,27 The dominant 5 D 0 -7 F 2 electric dipole transition among these transitions indicates that Eu 3+ will occupy the non-inversion symmetric center, which will improve the color purity.…”

White light tuning and temperature sensing of NaLu(WO4)2:Ln3+ up-converting phosphor

“…21 Based on the principle of the three primary colors, white light can be produced by mixing red, green and blue in a suitable ratio. [21][22][23][24] Among the RE elements, Tm 3+ is the most popular because of its blue and red emission bands. 25,26 In the same material, UC white light is frequently obtained via tripledoping Yb 3+ , Ho 3+ (Er 3+ ), and Tm 3+ in an appropriate mixing ratio.…”