材料科学
电致变色
佩多:嘘
透射率
基质(水族馆)
光电子学
纳米棒
电致变色装置
纳米技术
涂层
纳米复合材料
电极
图层(电子)
地质学
物理化学
海洋学
化学
作者
Guofa Cai,Xing Cheng,Michael Layani,Alvin Wei Ming Tan,Shaohui Li,Alice Lee‐Sie Eh,Dace Gao,Shlomo Magdassi,Pooi See Lee
出处
期刊:Nano Energy
[Elsevier]
日期:2018-07-01
卷期号:49: 147-154
被引量:86
标识
DOI:10.1016/j.nanoen.2018.04.017
摘要
High-quality patterns were successfully prepared by inkjet-printing WO3-PEDOT:PSS composites on different substrates including the rigid FTO glass and most importantly, on flexible PEDOT:PSS/Ag grid/PET. Excellent electrochromic performances can be achieved, including large optical modulation (85.7% optical contrast at the wavelength of 633 nm on FTO glass substrate), fast switching speed (coloration/bleaching time of 2.4/0.8 s on the PEDOT:PSS/Ag grid/PET substrate), instantaneous coloration efficiency (68.8 cm2 C−1) and good cycling stability (up to 10,000 cycles). The effects of the applied potential window during electrochemical evaluation on the electrochromic performances were analyzed in detail. The printed electrochromics films on PEDOT:PSS/Ag grid/PET showed the best electrochemical stability, in agreement with its superior conductivity and transmittance at 633 nm of 0.6 Ω/sq and 66%, respectively. It sustained transmittance modulation of about 75.5% and 53.1% of its first cycle recorded contrast at 633 nm, after being subjected to 1000 and 5000 cycles, respectively, and maintained good electrochemical stability up to 10,000 cycles. Moreover, a robust mechanical stability was also achieved by the printed films on flexible PEDOT:PSS/Ag grid/PET substrate. The film maintained a transmittance modulation of 85.8% of its original contrast after 5000 bending cycles at a curvature radius of 1 cm. The inkjet-printed WO3 nanocomposite based flexible electrochromic displays exhibited excellent electrochromic performance, making it a promising candidate for energy efficient displays, e-books, e-cards and multifunctional electronic devices.
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