Preparing and applying nanosheets in controlling the orientation of TiO₂ thin films

详细信息    查看全文

• 作者：Te-Wei Chiu ; ^{tewei@ntut.edu.tw" class="auth_mail" title="E-mail the corresponding author} ; Yi-An Chen ; Han-Chia Lee ; Sheng-Zhe Hong
• 关键词：TiO2 thin films ; Ca2Nb3O10 nanosheet ; Preferred orientation
• 刊名：Ceramics International
• 出版年：2015
• 出版时间：July 2015
• 年：2015
• 卷：41
• 期：supp_S1
• 页码：S213-S217
• 全文大小：1219 K

文摘

In this study, a sol–gel technique involving a spin-coating method was used to prepare TiO₂ thin films with a Ca₂Nb₃O₁₀ (CNO) nanosheet additive on glass substrates. The CNO nanosheet was prepared through chemical solution exfoliation, and its formation was confirmed through direct observation by using a transmission electron microscopy. The structure and morphology of the thin films were characterized using X-ray diffraction and field-emission scanning electron microscopy. The anatase phase TiO₂ thin films were obtained with post-deposition annealing at 400–700 °C. The crystallinity of TiO₂ thin films mainly depended on the concentration of CNO and annealing temperature. The TiO₂ thin films prepared with 1.96 wt% CNO nanosheet which annealed at 700 °C exhibited a strong (004) peak in XRD pattern, and show a preferred orientation along the c-axis.