静电场对超声雾化热解喷涂制备TiO_(2)薄膜的影响研究  

Effect of Electrostatic Field on the Preparation of TiO_(2) Thin Films by Ultrasonic Atomised Pyrolytic Spraying

作　　者：李冬梅 周俊 吴非凡 吕家波 肖黎 龚恒翔 LI Dongmei;ZHOU Jun;WU Feifan;LYU Jiabo;XIAO Li;GONG Hengxiang(College of Science,Chongqing University of Technology,Chongqing 400054,China;Longtai Yangjian(Chongqing)Medical Technology Co.,Ltd.,Chongqing 402760,China)

机构地区：[1]重庆理工大学理学院,重庆400054 [2]龙泰洋健(重庆)医疗科技有限公司,重庆402760

出　　处：《人工晶体学报》2024年第12期2173-2180,共8页Journal of Synthetic Crystals

摘　　要：基于自主搭建的超声雾化热解喷涂装置进行静电场作用耦合,通过在反应沉积腔体的上、下壁面间施加非匀强电场,探究了形成静电场所施加的直流电压对喷涂TiO_(2)薄膜结构与性能的影响。电场作用下雾滴颗粒被极化并获得垂直衬底表面的动量,克服了热泳力作用的影响,提高了钛源前驱体在衬底表面的附着效率,同时增强了薄膜结晶性能及成膜均匀性。结果表明,当加载电压为1.0 kV时,获得了优化锐钛矿相TiO_(2)薄膜,其(101)晶面半峰全宽为0.29°,平均晶粒尺寸达到94.19 nm,可见光区平均透过率为85%,表面粗糙度为16.70 nm。通过静电场的施加,调控了衬底近表面处入射粒子的动量,构建了更有利于TiO_(2)薄膜生长的稳定环境,为TiO_(2)薄膜制备工艺的优化提供了参考。Based on the independent ultrasonic atomised pyrolytic spraying device,an electrostatic field coupling is carried out by applying non-uniform electric field between the upper and lower walls of the reactive deposition chamber.Then,the effect of applied DC voltage on the structure and properties of the sprayed TiO_(2) thin film was conducted.Upon the action of the electric field,the droplet particles are polarized and gain momentum perpendicular to the substrate surface.The Coulomb force produced by electric field cancels the influence of the thermophoresis force,and then improves the adhesion efficiency of titanium precursor on the near surface of the substrate.Thus,the crystallization property and film formation uniformity of the film is greatly enhanced.The results show that when the applied voltage is 1.0 kV,the anatase TiO_(2) thin film is optimized.Its(101)crystal plane has a full width at half maximum of 0.29°,an average grain size of 94.19 nm,an average visible light transmittance of 85% and a surface roughness of 16.70 nm.By applying electrostatic fields,the momentum of incident particles near the surface of the substrate is regulated and a stable environment more conducive to the growth of TiO_(2) thin film is constructed.This work provides a reference for the optimization of TiO_(2) thin film preparation process.

关 键 词：TiO_(2)薄膜 超声雾化热解喷涂 热泳力 静电场 晶体生长 

分 类 号：TB383.2[一般工业技术—材料科学与工程]