Role of pressure in stabilization of oxynitride phosphor synthesis

Abstract The possibilities of improving the crystallization and optical properties strontium europium oxonitridosilicate phosphor powders were discussed. Two different routes synthesis presented: traditional solid-state reaction method gas pressure synthesis. It was proven that altering partial during process enhances a desired single, triclinic SrSi 2 O N phase. XANES measurements confirmed complete reduction trivalent activator ions in all tested materials. photoluminescent determined by emission, excitation decay times measurements. CIE1931 colour points luminous efficacy calculated as well. Thermal quenching studies range 0–225 °C good thermal stability investigated combined with excellent quantum efficiency at room temperature.