多孔硅中组装SrAl_2O_4:Eu^(2+),Dy^(3+)的发光现象  

Luminescence of SrAl_2O_4:Eu^(2+),Dy^(3+) doped porous silicon

作　　者：王晓华[1] 刘应亮[1] 孟建新[1] 容建华[1] 黄浪欢[1] 张静娴[1] 

机构地区：[1]暨南大学化学系,广东广州510632

出　　处：《暨南大学学报（自然科学与医学版）》2003年第5期71-74,共4页Journal of Jinan University(Natural Science & Medicine Edition)

基　　金：国家自然科学基金(59982003和20171018);广东省自然科学基金(990484和013201);稀土化学与物理重点实验室资助项目

摘　　要：　用溶胶-凝胶法制备符合SrAl2O4:Eu3+,Dy3+化学组成的溶胶,通过水热反应组装后还原的多孔硅主客体材料的荧光光谱发生显著蓝移,并出现一个新的400～450nm的余辉发射峰,分析其原因主要是发光材料进入了多孔硅的纳米孔洞,二价铕离子周围的环境变化和发光材料受到了量子尺寸效应产生的.Stoichiometric SrAl_2O_4:Eu^(3+),Dy^(3+) sol guest was prepared by Sol-gel method and assembled into porous silicon by hydrothermal reaction. The fluorescence spectra of the reduced host-gust material exhibit blue shift of the emission band of SrAl_2O_4:Eu^(3+),Dy^(3+) while the after-glow spectra emerge a new band at 400～450 nm, which originated from the change of the surrounding of the Eu^(2+) and the quantum effect took place when the phospohor was capsulated into the pores of porous silicon.

关 键 词：多孔硅 光谱蓝移 长余辉 

分 类 号：O614.33[理学—无机化学]