Abstract
Europium-doped LaSi 3 N 5 phosphor was synthesized from LaSi/Si/Si 3 N 4 /Eu 2 O 3 mixture by nitridation at 1390 o C and additional annealing at 1650 o C for 4 h. The phosphor shows emissions in the green light region with a maximum at 560 nm. With increas- ing europium content in the general formula La 1-z Eu z Si 3 N 5-z O 1.5z from z = 0.01 to 0.06 there was a maximum emission for z = 0.04 followed by concentration quenching for the highest europium content (z = 0.06).
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