Y-TiO_2薄膜的超声波—溶胶—凝胶法制备及表征(英文)  

Preparation and Characterization of Y^(3+) Doped TiO_2 Thin Films Derived by Innovative Ultrasonic-Sol-Gel Method

作　　者：许文苑[1,2] 孟丽娜[2] 杨婥[2] 罗明标[1] 黄国林[1] 

机构地区：[1]东华理工大学放射性地质与勘探技术国防重点学科实验室,江西抚州344000 [2]东华理工大学核资源与环境教育部重点实验室,江西南昌330013

出　　处：《稀有金属材料与工程》2011年第S1期399-401,共3页Rare Metal Materials and Engineering

基　　金：National Natural Science Foundation of China(2009GZH0002,2009GZH0008);Jiangxi Provincial Key Program for Popularization of S&T Achievements(2009CCB00800)

摘　　要：提出了一种制备Y掺杂TiO2薄膜的新方法。采用溶胶-凝胶法结合超声技术,以钛酸四丁酯为前驱体制备Y-TiO2溶胶,分别采用XRD、SEM、FT-IR和UV-vis对样品的组成与结构进行了表征。结果表明:Y3+掺杂可较好地抑制TiO2由锐钛矿相向金红石相的相变,提高了相变温度,抑制了晶粒生长。Y掺杂TiO2薄膜的晶型结构为锐钛矿相结构,晶型为锐钛矿相,粒度为6~16nm。Y3+掺杂能引起TiO2光学吸收边的"红移",带隙变窄,红移程度随掺杂量增加而增大,随温度升高而减小。薄膜表面平整,厚度约80nm。An innovative ultrasonic-sol-gel method was put forward to prepare Y3+ doped TiO2 films. Y-TiO2 sol was prepared by a sol-gel process under ultrasonic condition using tetrabutyl titanate as the precursor. The composition, structure and performance of the obtained material were characterized by XRD, SEM, FT-IR and UV-vis. Results indicate that Y3+ doping can inhibit the phase transformation of TiO2 from anatase to rutile and increase phase-transition temperature and restrain grain growth. The crystalline phase composition of Y3+ doped TiO2 films is anatase, and the particle size is from 6 to 16 nm. In addition, Y3+ doping can bring the red-shift of the optical absorption edge of TiO2, and the degree of red shift is increased with the increase of Y3+ doping amount and decreased with the rise of temperature. Thin film thickness is about 80 nm with a smooth surface.

关 键 词：超声波-溶胶-凝胶法 Y3+掺杂 TIO2薄膜 表征 

分 类 号：TB383.2[一般工业技术—材料科学与工程]