本文選題：TiO_2薄膜　切入點(diǎn)：摻雜　出處：《安徽理工大學(xué)》2017年碩士論文　論文類(lèi)型：學(xué)位論文

【摘要】：電致變色(EC)被定義為通過(guò)電化學(xué)氧化或還原引起穩(wěn)定色彩的可逆變化的現(xiàn)象。電致變色材料是指具有電致變色性能的材料,可以分為無(wú)機(jī)電致變色材料和有機(jī)電致變色材料。電致變色器件一般是由五部分組成:透明導(dǎo)電層/電致變色層/離子導(dǎo)體層/對(duì)電極/透明導(dǎo)電層。電致變色器件的功能主要表現(xiàn)為透射可調(diào)、反射可調(diào)、信息顯示,對(duì)應(yīng)的用途大致可以分為智能窗、汽車(chē)防眩后視鏡、電致變色顯示器等。本課題以鈦酸四丁酯和水為原料、乙醇為溶劑、醋酸和硝酸為螯合劑,利用溶膠-凝膠法在ITO玻璃襯底上成功制備了具有電致變色性能的TiO_2薄膜以及一系列La、Nd、Bi摻雜TiO_2薄膜。采用TG-DTA、XRD、XPS、電化學(xué)工作站、紫外-可見(jiàn)分光光度計(jì)等手段研究TiO_2粉末和薄膜的結(jié)構(gòu)、組成、電化學(xué)性能以及光學(xué)特性。結(jié)果表明:TiO_2干凝膠分別進(jìn)行400℃、500℃、600℃的焙燒溫度處理均形成銳鈦礦相TiO_2,且溫度越高對(duì)應(yīng)其晶體發(fā)育越完全;La、Nd、Bi摻雜TiO_2,由于金屬離子進(jìn)入TiO_2晶格中,使得Ti02八面體的鍵角和鍵長(zhǎng)發(fā)生較大畸變,增加了 TiO_2八面體排列的無(wú)序性,造成晶體非晶相程度提高。鈦酸四丁酯的體積分?jǐn)?shù)為12%時(shí),對(duì)應(yīng)其薄膜的電致變色性能最為優(yōu)異,體積分?jǐn)?shù)高于或者低于12%時(shí),薄膜的電化學(xué)性能均有所降低。鍍膜層數(shù)對(duì)循環(huán)伏安曲線(xiàn)的峰形以及峰位置僅有略微影響。當(dāng)熱處理溫度為400℃和500℃時(shí),TiO_2薄膜具有優(yōu)異的電化學(xué)性能,但400℃熱處理的薄膜與ITO玻璃表面黏著力較差。La、Nd、Bi單獨(dú)摻雜TiO_2薄膜具有電致變色性能,其中8%La、18%Nd、6%Bi摻雜TiO_2薄膜的電致變色性能較優(yōu)異,且三種摻雜的電致變色效果比較為:BiLaNd。La、Nd、Bi聯(lián)合摻雜合成的TiO_2依然是非晶相程度很高的銳鈦礦,且當(dāng)La:Nd:Bi=4:10:2時(shí)摻雜TiO_2非晶相程度最高,對(duì)應(yīng)其薄膜的循環(huán)伏安特性最好。未摻雜,La、Nd、Bi單獨(dú)摻雜對(duì)TiO_2薄膜的電流響應(yīng)時(shí)間影響不大。
[Abstract]:Electrochromic (ECC) is defined as a reversible change in color caused by electrochemical redox or reduction. An electrochromic material is a material with electrochromic properties. Electrochromic devices generally consist of five parts: transparent conductive layer / electrochromic layer / ionic conductor layer / pair electrode / transparent conductive layer. The functions of the device are mainly transmissible and adjustable. The corresponding applications can be divided into smart windows, automotive rearview mirrors, electrochromic displays, etc. In this paper, tetrabutyl titanate and water are used as raw materials, ethanol as solvent, acetic acid and nitric acid as chelating agents, etc. TiO_2 thin films with electrochromic properties and a series of LaNd#en0# Bi doped TiO_2 thin films were successfully prepared on ITO glass substrates by sol-gel method. Study on the structure and composition of TiO_2 Powder and thin Films by UV-Vis Spectrophotometer, Electrochemical properties and optical properties. The results show that the anatase phase TiO2 is formed at 400 鈩，

本文編號(hào)：1582374