| کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
|---|---|---|---|---|
| 6457255 | 1420656 | 2017 | 6 صفحه PDF | دانلود رایگان |
کلمات کلیدی
1. معرفی
2. مواد و روش ها
1.2. مواد
2.2. روش ها
1.2.2. ابزار و اندازه گیری ها
2.2.2 سنتز 1,1′ -- bis (p-cyanophenyl)- 4,4′- بی پیریدینیوم دی کلراید
3.2.2. تهیه مخلوط های EC
4.2.2. مونتاژ دستگاه ها
3. نتایج و بحث
1.3. همگنی
2.3نیمه عمر
3.3. مقاومت در برابر خم شدن
4.3. دستگاه های دو رنگ بر اساس الگوی کاغذ
4. نتیجه گیری
- Embedding EC liquids into paper matrix enhances robustness of flexible devices.
- Presence of paper has also positive effect on the flexible devices durability.
- Flexible multi-color EC devices based on paper-patterning can be produced.
Viologen-based liquid electrochromic mixtures provide high performance in terms of optical contrast and response time. However, their use in flexible ECDs is quite limited due to the risk of leakage and difficult manufacturing and handling. Herein, it is demonstrated that the incorporation of viologen-based electrochromic mixtures into paper-matrix is a promising solution to overcome the mentioned issues. The performance of flexible paper-based devices using both water-free and water-based formulations containing viologens is assessed for the first time and compared with paper-free devices. The benefits of using paper on the homogeneity, life-time (operating devices above 1000 redox cycles) and robustness against bending (operating devices above 200 bending cycles) is proven: while short-circuits, inhomogeneous coloration and ITO-etching usually occur in the paper-free devices, these concerns are avoided when the liquid mixtures are embedded within the paper-matrix while keeping the good electrochromic performance typically provided by liquid formulations. Additionally, a patterned bi-chromic (blue-green) device is presented as a proof-of-concept to show the potential of these paper-based systems in the field of flexible EC displays.
Journal: Solar Energy Materials and Solar Cells - Volume 167, August 2017, Pages 22-27