铁酸铋功能陶瓷薄膜的液相自组装制备  

PREPARATION OF BiFeO_3 THIN FILM BY A SELF-ASSEMBLED MONOLAYER TECHNIQUE

作　　者：谈国强[1] 博海洋[1] 苗鸿雁[1] 夏傲[1] 贺中亮[1] 

机构地区：[1]教育部轻化工助剂化学与技术重点实验室,陕西科技大学,西安710021

出　　处：《硅酸盐学报》2009年第11期1824-1828,共5页Journal of The Chinese Ceramic Society

基　　金：国家自然科学基金(50672055,50872077);国家科技支撑计划(2006BAF02A28);陕西科技大学研究生创新基金资助项目

摘　　要：利用自组装单层膜技术,以三氯十八烷基硅烷(octadecyl trichlorosilane,OTS)为模板,以硝酸铋和硝酸铁为原料,在玻璃基片上成功制备了铁酸铋(BiFeO3)晶态薄膜。采用接触角仪测量了紫外光照射后OTS单层膜的亲水性。通过X射线衍射、扫描电镜和能谱仪等表征了BiFeO3薄膜的物相、表面形貌及微观结构。结果表明:紫外光照射使OTS单层膜由原来的强疏水性转变为良好的亲水性,说明OTS自组装膜层表面已被羟基化。在70℃沉积8h并经600℃退火2h制备的BiFeO3薄膜结晶良好,薄膜样品的表面平整,厚度较为均匀,薄膜厚度约为100nm。BiFeO3 thin films were successfully prepared on glass wafers with a self-assembled monolayer（SAM） technique using Bi（NO3）3 and Fe（NO3）3 as raw materials and octadecyl trichlorosilane（OTS） as stencil.The hydrophilicity of ultraviolet（UV）-irradiated OTS monolayer film was measured by a contact angle measurement system.The phase composition,surface morphology and microstructure of the films were characterized by X-ray diffraction,scanning electron microscopy and energy dispersive spectrometry.The results show that the OTS-SAM film surface is transformed from a strong hydrophobic surface to a super-hydrophilic surface by UV irradiation.The BiFeO3 thin film deposited at 70 ℃ for 8 h and annealed at 600 ℃ for 2 h has good crystallization;the film is flat and its thickness is uniform about 100 nm.

关 键 词：自组装单层膜 铁酸铋 薄膜 

分 类 号：TB43[一般工业技术] TQ135.32[化学工程—无机化工]