Abstract
This paper reports a novel route to synthesize nano particles of YAG:Ce3+ luminescent materials via polymer gel precursor. In an aqueous solution containing Y(NO3)3, Ce(NO3)3 and Al(NO3)3, citric acid was added to improve the stability of the solution. Then, acrylamide and N,N`-methylenebis- acrylamide were added. The polymerization of mixture solution was initiated by adding (NH4)2S2O8. By heating the solution at 80oC for 3 h, a transparent gel was obtained. The gel was firstly transformed into active carbon by soaking it at 700oC in ultrahigh pure N2 atmosphere. Carbon in as-received mixture was then removed when the atmosphere was changed from nitrogen to air at the same heating temperature. Well dispersive nano powders of single phase YAG:Ce3+ were thus obtained. XRD, SEM and BET were used to study the characteristics of as-prepared nano YAG:Ce3+ powders.
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