Solution Casting Effect of PMMA-Based Polymer Electrolyte on the Performances of Solid-State Electrochromic Devices

电致变色 材料科学 电解质 电致变色装置 碳酸丙烯酯 铸造 准固态 化学工程 耐久性 高氯酸锂 锂(药物) 阳极 聚合物 复合材料 电极 色素敏化染料 化学 物理化学 工程类 医学 内分泌学
作者
Abdelrahman Hamed Ebrahem Abdelhamed,Gregory Soon How Thien,Chu-Liang Lee,Benedict Wen-Cheun Au,Kar Ban Tan,H. C. Ananda Murthy,Kah‐Yoong Chan
出处
期刊:Polymers [Multidisciplinary Digital Publishing Institute]
卷期号:17 (1): 99-99
标识
DOI:10.3390/polym17010099
摘要

Electrochromic devices (ECDs) are devices that change their optical properties in response to a low applied voltage. These devices typically consist of an electrochromic layer, a transparent conducting substrate, and an electrolyte. The advancement in solid-state ECDs has been driven by the need for improved durability, optical performance, and energy efficiency. In this study, we investigate varying the temperature to the casting solution for polymethylmethacrylate (PMMA)-based electrolytes for solid-state ECDs with a structure of glass/ITO/WO3/PMMA electrolyte/ITO/glass. The electrochromic layer, composed of WO3, was deposited using the sol-gel method, while the electrolyte, comprising lithium perchlorate (LiClO4) in propylene carbonate (PC) with PMMA, was prepared via solution casting. Various electrolyte samples were heated at different temperatures of 25, 40, 60, 80, and 100 °C to analyze the impact on the devices’ performance. Our findings indicate that the devices with electrolytes at 25 °C exhibited superior anodic and cathodic diffusion. An increase in heating temperature corresponded with an increase in switching time. Notably, the sample heated at higher temperatures (60, 80, and 100 °C) demonstrated exceptional cycle stability. Nevertheless, samples with higher temperatures displayed a decrease in optical modulation. Additionally, the 100 °C sample exhibited the highest coloration efficiency compared to other samples at lower temperatures. This research highlights the potential of varying the temperature of solution casting on PMMA-based electrolytes in optimizing the performance of solid-state ECDs, particularly regarding coloration efficiency and durability.
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