溶胶-凝胶法制备Sm^3＋掺杂TiO2粉体的发光性能  

Luminescencent Properties of Sm^(3+) Doped TiO_2 Powders Prepared by Sol-Gel Method

作　　者：段萍萍[1] 王威[1] 李宁[1] 孙旭炜[1] 王银珍[1] 李炜[1] 初本莉[1] 何琴玉[1] 

机构地区：[1]华南师范大学物理与电信工程学院,广东省量子调控工程与材料重点实验室,广州510006

出　　处：《华南师范大学学报（自然科学版）》2016年第3期93-96,共4页Journal of South China Normal University(Natural Science Edition)

基　　金：国家自然科学基金项目(11474104;51372092)

摘　　要：采用溶胶凝胶法制备了Sm3+掺杂的Ti O2粉体,并表征了其性能.结果表明溶胶凝胶法制得粉体为锐钛矿和金红石的混相Ti O2.在335 nm波长光的激发下,有较强的橙红色发射,发射峰值分别位于582、611、662和725 nm,属于Sm3+离子的4G5/2→6HJ/2(J=5,7,9,11)跃迁,最强峰位于611 nm;在611 nm波长的光激发下,激发峰位于335和407 nm.Sm^3＋doped Ti O_2 powders were prepared by the sol-gel method,and the properties were characterized.The results indicated that the obtained sample is a mixed phase TiO2 with anatase and rutile structure. Under 355 nm excitation,Ti O_2 showed strong orange-red emission,the emission spectra exhibited four emission peaks at 582,611,662,and 725 nm,corresponding to4G5 / 2→6HJ/2（ J = 5,7,9,11） transition of Sm^3＋,the strongest emission peak is at 611 nm; The excitation spectra of TiO2∶ Sm^3＋powders are composed of two excitation peaks at 335 and407 nm under 611 nm excitation.

关 键 词：溶胶凝胶法 TiO2∶Sm^3+粉体 发光性能 

分 类 号：O482[理学—固体物理]