Luminescent characteristics of LiBaBO3:Tb3+ green phosphor for white LED

Photoluminescence properties of β-SiAlON:Yb2+, a novel green-emitting phosphor for white light-emitting diodes

“…This assignment is consistent with the viewpoint that some rare-earth ions, like Eu and Yb, are divalent rather than trivalent in α-SiAlON [10,11,17]. The emission spectra of the divalent rare-earth ions, usually arising from the 4f-5d electronic transitions, differ markedly from those of the trivalent ions arising from the 4f-4f transitions [28][29][30]. They are characterized by broad bands, as shown in figure 3 for Yb in the +2 state in the β-SiAlON host lattice, whereas those of the trivalent ions generally consist of several narrow lines.…”

Full color photoluminescence of Tb3+/Sm3+ codoped oxyfluoride aluminosilicate glasses and glass ceramics for white light emitting diodes

“…Particularly, white LEDs (WLEDs) as the new generation of solid state light source has attracted much attention, because it is expected to replace the conventional incandescent and fluorescent lamps in the near future. Currently, W-LEDs have been fabricated by encapsulating two or three different types of phosphors in an epoxy resin with either ultraviolet (UV) or blue LED chips [3,4]. The disadvantage of this fabrication is that the epoxy resin tends to deteriorate at the operating temperature, and leads to a reduction of its lifetime.…”

Polyol-mediated synthesis and luminescence properties of CePO4:Tb3+ nanospindles

“…Lanthanide-doped inorganic compounds as novel functional materials have received much attention in recent years [1][2][3][4][5][6]. Among them, rare earth phosphates are of importance in biomedical applications due to their high quantum yield and expected low toxicity [7].…”