Characterization and properties of green-emitting $β-SiAlON:Eu2+$ powder phosphors for white light-emitting diodes Available to Purchase

This letter reports a $β-SiAlON:Eu2+$ green phosphor with the composition of $Eu0.00296Si0.41395Al0.01334O0.0044N0.56528$⁠. The phosphor powder exhibits a rod-like morphology with the length of $∼4μm$ and the diameter of $∼0.5μm$⁠. It can be excited efficiently over a broad spectral range between 280 and 480 nm, and has an emission peak at 535 nm with a full width at half maximum of 55 nm. It has a superior color chromaticity of $x=0.32$ and $y=0.64$⁠. The internal and external quantum efficiencies of this phosphor is 70% and 61% at $λex=303nm$⁠, respectively. This newly developed green phosphor has potential applications in phosphor-converted white LEDs.