The investigation of surface roughness of substrate on electrochromic characteristics for PMeT thin film

2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013) Pub Date : 2013-08-01 DOI:10.1109/NANO.2013.6720844

C. Yang, J. Chou, Yi-Hung Liao, Chia-Yu Liu, Pei-An Ho, C. Huang, Hsueh-Tao Chou

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Abstract

The objective of this study is to investigate the influence of surface roughness on electrochromic characteristics. The rough surface of indium tin oxide/glass (ITO/Glass) was prepared by wet etching. And the poly (3-methylthiophene) (PMeT) has been deposited on ITO/Glass by potentiostatic method. The electrochromic behaviors of the PMeT/ITO/Glass were performed in 0.1 M lithium perchlorate (LiClO₄)/propylene carbonate (PC) electrolyte. Compared with the oxalic acid ((COOH)₂·H₂O) and ferric chloride + hydrochloric acid (FeCl₃+HCl) solutions, the ITO/Glass has high surface roughness when the ITO/Glass was etched in (COOH)₂·H₂O solution. The PMeT/ITO/Glass has the best transmittance variation (ΔT(%)) (25 %) at 450 nm after the ITO/Glass was etched in (COOH)₂·H₂O solution for 160 sec. And, the PMeT/ITO/Glass has the best transmittance variation (ΔT(%)) (5 %) at 650 nm after the ITO/Glass was etched in FeCl₃+HCl solution for 60 sec. Furthermore, the experimental results observed that the color of PMeT/ITO/Glass was changed from blue (oxidation state) to red (reduction state).

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基板表面粗糙度对PMeT薄膜电致变色特性的影响

本研究的目的是研究表面粗糙度对电致变色特性的影响。采用湿法刻蚀法制备了氧化铟锡玻璃(ITO/ glass)的粗糙表面。用恒电位法在ITO/Glass上沉积了聚(3-甲基噻吩)(PMeT)。在0.1 M高氯酸锂(LiClO4)/碳酸丙烯酯(PC)电解质中，研究了PMeT/ITO/Glass的电致变色行为。与草酸((COOH)2·H2O)和氯化铁+盐酸(FeCl3+HCl)溶液相比，在(COOH)2·H2O溶液中蚀刻ITO/Glass具有较高的表面粗糙度。在(COOH)2·H2O溶液中蚀刻160秒后，PMeT/ITO/Glass在450 nm处透光率变化最大(ΔT(%))(25%)，在FeCl3+HCl溶液中蚀刻60秒后，PMeT/ITO/Glass在650 nm处透光率变化最大(ΔT(%))(5%)。实验结果表明，PMeT/ITO/Glass的颜色由蓝色(氧化态)变为红色(还原态)。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2013 13th IEEE International Conference on Nanotechnology (IEEE-NANO 2013)

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