Abstract
AbstractIt remains a critical challenge to develop narrow‐band emitters for wide color gamut displays. Herein, it is designed by the selective site occupancy engineering and an unprecedented narrow‐band green‐emitting phosphor is prepared through chemical substitution. By introducing Ga3+ ions into Sr2LiAlO4:Eu2+ phosphor, the distribution of Eu2+ ions in Sr1 and Sr2 sites is effectively controlled, and only one type of luminescent centers Eu2+(Sr1) is remained in Sr2LiAl0.6Ga0.4O4:Eu2+ due to the compression effect of Sr2O8 polyhedra. Sr2LiAl0.6Ga0.4O4:Eu2+ phosphor presents an extremely narrow‐band green emission centered at 512 nm with a full‐width at half‐maximum of only 40 nm. The wide color gamut (107% National Television System Committee) of the as‐fabricated white liquid crystal displays and the vivid figures captured from the projector demonstrate the potential application of narrow‐band emitter for wide‐color gamut displays. This work provides the design principles of realizing narrow‐band emission by selective site occupancy engineering and can set the stage for the exploring of Eu2+‐activated phosphor for high definition displays.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call