摘要
采用微波法和溶胶-凝胶法制备了(Y2O3:Er3+)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.
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.
出处
《物理化学学报》
SCIE
CAS
CSCD
北大核心
2007年第8期1288-1290,共3页
Acta Physico-Chimica Sinica
基金
国家自然科学基金(20073016,60271020)
东北电力大学博士后基金资助项目
关键词
上转换
微波制备
Y2O3
Upconversion
Microwave preparation
Y2O3
