Tunable yellow-red emission performance of Dy~(3+), Mn~(4+): NaLaMgWO_6 phosphors excited with 390-nm LED

摘要

The Dy~(3+), Mn~(4+): NaLaMgWO_6 phosphors are synthesized successfully using the technique of solid-state reaction at 1150 °C. The XRD and SEM-EDS are measured to analyze the phase purity. The concentrations of Dy~(3+), Mn~(4+), Mg~(2+), Na~+, La~(3+) and W~(6+) are measured by ICP. The absorption and excited spectra are presented, which indicate the 390 nm is suitable for the tunable yellow-red light excitation. Using the 390-nm LED as the excitation source, the emission spectra with different doped concentrations ratios of Dy~(3+)to Mn~(4+) are obtained, which shows good tunable yellow-red emission performance.