Abstract
Phosphor Y2 O3: Eu3+ particles were prepared by a wet chemical method from yttrium isoproxide and europium nitrate as starting materials. Europium was effectively doped into host material while hydrolysis of yttrium isopropoxide with europium nitrate tended to generate the small and agglomerate particles compared to those obtained from alkoxide only. The decomposition terminated at the calcination temperatures of 600-700°C for residual organic matter in precipitate, and then crystallization began to proceed with temperatures. The fluorescence peak at 611 nm was observed for the prepared Y2 O3: Eu3+ particles above the temperatures of 600°. The peak intensity increased with the calcination temperature corresponding to the progress of crystallization.
