Multisite Cation Regulation of Broadband Cyan-Emitting (BaSr)LuSiO/Eu Phosphors for Full-Spectrum wLEDs.

Developing broadband cyan-emitting phosphors is an essential issue to achieve high-quality full-spectrum phosphor-converted white light-emitting diodes. Multisite cation regulation to modify the photoluminescence spectrum is a valid way to achieve broadband emission for phosphors. The BaLuSiO lattice with various cation sites for activator ions is a preferred host for broadband emitting phosphors.

Cyan-Green Phosphor (LuM)(AlSi)O:Ce for High-Quality LED Lamp: Tunable Photoluminescence Properties and Enhanced Thermal Stability.

High-quality white light-emitting diodes (w-LEDs) are mainly determined by conversion phosphors and the enhancement of cyan component that dominates the high color rendering index. New phosphors (LuM)(AlSi)O:Ce (M = Mg, Ca, Sr and Ba), showing a cyan-green emission, have been achieved via the co-substitution of Lu-Al by M-Si pair in LuAlO:Ce to compensate for the lack of cyan region and avoid using multiple phosphors. The excitation bands of (LuM)(AlSi)O:Ce (M = Mg, Ca, Sr and Ba) show a red-shift from 434 to 445 nm which is attributed to the larger centroid shift and crystal field splitting.

YScSiNC:Ce-A Broad Cyan-Emitting Phosphor To Weaken the Cyan Cavity in Full-Spectrum White Light-Emitting Diodes.

On the basis of a rough rule of thumb that the difference in ionic radius for the interstitial cationic pair may affect the structure of some nitride and carbonitride compounds, a novel carbonitride phosphor, YScSiNC:Ce, was successfully designed. The crystal structure (space group P6mc (No. 186), a = b = 5.