Crystal Field Engineering Inducing Transformation from Narrow Band of Eu to Broadband of Eu.

The complete transformation from narrow peak emission of Eu to broadband emission of Eu was first realized in LaSrAlSiO:Eu series solutions relying on crystal field engineering and adjustment of synthesis parameters. The original red phosphor LaSrAlO:0.03Eupeaks at 703 nm originated from → transition of Eu under 395 nm excitation.

Oxynitride KBaSiON:0.28Eu phosphor with high thermal stability realized by crystal field engineering.

Extensive research has gone into modifying the chemical composition of phosphors to achieve desirable optical properties. Here, oxynitride phosphors KBaSiON:0.28Eu were synthesized by introducing N () into a KBaSiO:0.