Abstract
Strontium europium aluminum silicon nitride, Sr 0.99Eu 0.01AlSiN 3, was synthesized by heating a mixture of binary nitrides at 2173 K and a N 2 gas pressure of 190 MPa. Single crystals of Sr 0.99Eu 0.01AlSiN 3 approximately 30 μm were obtained. The structure was confirmed to be an isotypic structure of CaAlSiN 3 in the orthorhombic space group Cmc2 1, analyzed by single-crystal X-ray diffraction. The lattice parameters are a=9.843(3), b=5.7603(16), c=5.177(2) Å, cell volume=293.53(17) Å 3. It shows an orange-red photoluminescence by 5 d→4 f transition of Eu 2+ at around 610 nm under excitation ranging from ultraviolet to 525 nm. The photoluminescence intensity, temperature characteristics, and oxidative stability were comparable or superior to those of CaAlSiN 3:Eu 2+ phosphor.
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