高等学校化学学报 ›› 2020, Vol. 41 ›› Issue (12): 2796-2803.doi: 10.7503/cjcu20200455

• 物理化学 • 上一篇    下一篇

TiO2-PTPAT纳米核/壳结构复合膜的制备及电致变色性能

欧阳密1, 陈璐1, 胡旭明1, 李裕文1, 戴大程1, 屠袁波1, 白茹2(), 吕晓静1(), 张诚1()   

  1. 1.浙江工业大学化学工程学院, 杭州 310014
    2.杭州电子科技大学磁电子中心, 杭州 310018
  • 收稿日期:2020-07-14 出版日期:2020-12-10 发布日期:2020-12-09
  • 通讯作者: 张诚 E-mail:330173743@qq.com;doctorlv@zjut.edu.cn;czhang@zjut.edu.cn
  • 作者简介:白 茹, 女, 博士, 副研究员, 主要从事光电磁材料及器件的设计制备及性能研究. E-mail: 330173743@qq.com|吕晓静, 女, 博士, 副研究员, 主要从事复合电致变色材料的制备及性能研究. E-mail: doctorlv@zjut.edu.cn
  • 基金资助:
    国家自然科学基金(批准号(51573165);51673174, 51703199)和浙江省自然科学基金(批准号(LY15E030006);LZ17E030001)资助

Preparation and Electrochromic Properties of TiO2-PTPAT Nano Core/Shell Composite Films

OUYANG Mi1, CHEN Lu1, HU Xuming1, LI Yuwen1, DAI Dacheng1, TU Yuanbo1, BAI Ru2(), LÜ Xiaojing1(), ZHANG Cheng1()   

  1. 1.College of Chemical Engineering,Zhejiang University of Technology,Hangzhou 310014,China
    2.Center for Integrated Spintronic Devices,Hangzhou Dianzi University,Hangzhou 310018,China
  • Received:2020-07-14 Online:2020-12-10 Published:2020-12-09
  • Contact: ZHANG Cheng E-mail:330173743@qq.com;doctorlv@zjut.edu.cn;czhang@zjut.edu.cn
  • Supported by:
    ? Supported by the National Natural Science Foundation of China(51573165);the Natural Science Foundation of Zhejiang Province, China(LY15E030006)

摘要:

通过水热法在氟掺杂氧化锡(FTO)导电玻璃基底上制备了垂直生长的二氧化钛(TiO2)纳米棒阵列, 以TiO2纳米棒阵列为模板采用电化学聚合法, 原位制备了TiO2-聚三[2-(4-噻吩)苯]胺(PTPAT)纳米核/壳结构的复合薄膜, 相比于纯PTPAT薄膜, TiO2-PTPAT复合薄膜显示出更好的电致变色(EC)性能. PTPAT薄膜在600 nm波长下的对比度为28%, 在1100 nm波长下的对比度为60%, 其褪色时间为3.86 s, 着色时间为5.52 s; TiO2- PTPAT复合薄膜在600 nm波长下的对比度为43%, 在1100 nm波长下的对比度为79%, 其褪色时间为3.35 s, 着色时间为4.43 s, 表明核/壳复合结构薄膜的光学对比度和响应时间性能更加优异. 将PTPAT薄膜和TiO2-PTPAT复合薄膜作为电致变色层组装成固态EC器件, 基于复合薄膜的器件具有更好的循环稳定性和更高的耐受电压. 复合薄膜在保持PTPAT薄膜原有的EC性能的基础上, 由于有序生长的纳米阵列结构的引入增加了薄膜的比表面积, 为电致变色过程中离子的掺杂和脱掺杂提供了更多有序通道, 从而加快了离子扩散速度. TiO2阵列的引入也改善了聚合物薄膜与透明导电电极之间的界面结合情况, 从而提升了器件的稳定性.

关键词: 二氧化钛纳米棒阵列, 聚三[2-(4-噻吩)苯]胺, 纳米复合, 电致变色, 电化学聚合

Abstract:

The vertically grown TiO2 nanorod array was prepared on fluorine-doped tin oxide(FTO) con- ductive glass substrates via hydrothermal method, and then TiO2-poly(tris[4-(thiophen-2-yl)phenyl]amine) (PTPAT) core/shell structure composite films were prepared by in?situ electrochemical polymerization using TiO2 nanorod arrays as templates. Compared with the pure PTPAT film, the composite film showed well electrochromic(EC) properties. The optical contrast of PTPAT film is 28% at 600 nm, 60% at 1100 nm, and the discoloring time is 3.86 s and the coloring time is 5.52 s at 1100 nm; the optical contrast of TiO2-PTPAT compo- site film is 43% at 600 nm, 79% at 1100 nm, and the discoloring time is 3.35 s and the coloring time is 4.43 s at 1100 nm. The results show that the core/shell composite structure film has better optical contrast and swit- ching time performance. The PTPAT film and the TiO2-PTPAT composite film are used as the EC layer to assemble EC solid devices. The composite film-based devices show better cycle stability and higher withstand voltage. This is because the composite film maintains the original electrochromic properties of the PTPAT film. Due to the introduction of orderly grown nano-array structure, the specific surface area of the film is increased, and more ordered channels are provided for the doping and dedoping of ions in the electrochromic process, thereby accelerating the ion diffusion speed. At the same time, the introduction of TiO2 array improves the interface bonding between the polymer film and the transparent conductive electrode, thus improves the stability of the device.

Key words: TiO2 nanorod arrays, Poly(tris[4-(thiophen-2-yl)phenyl]amine), Nanocomposite, Electrochromic, Electrochemical polymerization

中图分类号: