Abstract
Abstract This study reports the synthesis of novel red-emitting Eu 3+ -activated amorphous alkaline earth silicate phosphors with high emission intensities. Eu 3+ -activated barium (strontium) silicate hydrate phosphors were synthesized using a liquid phase reaction and then heated at 850 °C for 0.5 h to form amorphous barium (strontium) silicate phosphors. These amorphous phosphors emitted in the red region following near-UV (395 nm) irradiation. The internal quantum efficiencies of the Eu 3+ -activated amorphous barium silicate phosphor and strontium silicate phosphor were 56% and 60%, respectively, even though these phosphors were in the amorphous state.
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