The Enhanced Red Emission and Improved Thermal Stability of CaAlSiN₃:Eu Phosphors by Using Nano-EuB₆ as Raw Material.

Synthesizing phosphors with high performance is still a necessary work for phosphor-converted white light-emitting diodes (W-LEDs). In this paper, three series of CaAlSiN₃:Eu (denoted as CASN:Eu) phosphors using Eu₂O₃, EuN and EuB₆ as raw materials respectively are fabricated by under the alloy precursor normal pressure nitridation synthesis condition. We demonstrate that CASN:Eu using nano-EuB₆ as raw material shows higher emission intensity than others, which is ascribed to the increment of Eu ionic content entering into the crystal lattice.