期刊
ADVANCED OPTICAL MATERIALS
卷 11, 期 12, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/adom.202203126
关键词
bilayers; device design; dopants; electrochromic devices; electrochromic gel; electrochromism; monolayers
Electrochromism has been widely applied in smart devices such as smart windows, self-powered batteries, and solar panels. Solid-state integration of electrochromic materials is crucial for these applications. This article provides a comprehensive discussion on various materials acting as chromophores under electric bias and the parameters influencing device performance. The design of the device, including conducting substrates, electrochromic active materials, and electrolytes, is also discussed, along with different device paradigms and application-oriented structural modifications. The challenges and future directions are addressed as well.
Electrochromism, a well-defined phenomenon of bias-induced reversible color switching, has led to real applications in several smart devices including smart windows and self-powered batteries and solar panels. For these applications, the electrochromic (EC) materials need to be integrated as solid-state devices. Deciphering ways to recreate a conventional device requires understanding of basic structure and its working. A thorough discussion is provided here regarding various materials that can act as chromophores when treated with some electric bias in addition to a few parameters that dictatehow fairly the device performs. The next important aspect is the device design, the skeleton of which usually includes conducting substrates, EC active materials, and an electrolyte. Step-by-step, various available device paradigms are discussed starting from a single EC electrode then joining a blank substrate to fabricate a monolayer electrochromic device (ECD) moving onto bi-layer ECDs, and finally, all-in-one EC gel, which is devoid of any proper layered pattern. A thorough discussion regarding various application-oriented structural modifications is provided. Challenges and the areas that need to be addressed in immediate future are discussed.
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