摘要
以聚苯胺(PANI)为电致变色材料,分别制备了对称结构(SSECD,ITO||PANI||电解质||PANI||ITO)和非对称结构(ASECD,ITO||PANI||电解质||TiO2||ITO)的全固态电致变色器件。TiO2薄膜的制备采用提拉法,经500℃处理后得到锐钛矿结构,所得薄膜由粒径10～20 nm的TiO2颗粒组成,厚度约为200 nm,循环伏安曲线显示其具有良好的电荷储存能力。通过光谱电化学对比研究发现,ASECD的最大透射率差值(光学对比度)△Tmax为43.3%,比SSECD增大几乎一倍,显示出黄(-1.4 V)、绿(0 V)、蓝(1.4 V)三色变化,且具有更快的着褪色响应速度(0.8s),可进行实用开发。
The all solid-state electrochromic devices with symmetrical structure （SSECD, ITO‖PANI‖electrolyte ‖PANI‖ITO） and asymmetric structure （ASECD, ITO‖PANI‖ electrolyte ‖TiO2‖ITO） were prepared by using polyaniline （PANI） as the electrochromic material. Titanium dioxide thin films were prepared by pulling method, and after treated at 500 ℃, the titanium dioxide thin film formed by particles of magnitudes 10-20 nm and the thickness about 200 nm was found presenting as the typical anatase structure and having a good charge storage capacity as well. The in-situ electrochemical UV-visible spectroscopy comparative investigations find that the maximum transmission rate difference（photonic ratio） of ASECD is 43.3%, nearly about twice of SSECD. Besides, ASECD takes on reversible color variation among yellow （-1.4 V）, green （0 V） and blue （1 .4 V）, and has faster coloring/fading response time（0.8 s）, can be developed in practical utility.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2011年第3期43-47,共5页
Electronic Components And Materials
基金
北京市科技新星计划资助项目(No.2007B010)
国家自然科学基金资助项目(No.20974005)
关键词
聚苯胺
二氧化钛
全固态电致变色器件
polyaniline
titanium dioxide
all solid-state electrochromic device
