中文摘要：

采用微波法和溶胶．凝胶法制备了（Y2O3：Er^3＋粒子．微波法制备过程中烧结温度降低到600℃．980nm激光激发下得到550和660nm两个上转换发射带．微波法制备的上转换材料得到了强的红光发射和弱的绿光发射，溶胶．凝胶法制备的材料得到了强的绿色发射和弱的红光发射．结果表明，微波促进了S6对称性的形成，S6对称性促进了红光的发射．

英文摘要：

Erbium doped Y2O3 （Y2O3：Er^3＋） particles were prepared by microwave method and sol-gel method. Using microwave method the calcining temperature was decreased to 600 ℃. Two upconvening emission bands centered at 550 and 660 nm were presented under 980 nm laser excitation. Samples prepared by microwave method showed a strong red emission and a week green emission, while samples prepared by sol-gel method showed a strong green emission and a week red emission. The results showed that microwave promoted the formation of S6 symmetric structures and the S6 symmetric structures promoted the red emission.