Influence of electrolyte distribution in PEDOT:PSS based flexible electrochromic devices

• DOI: 10.1016/j.cplett.2017.10.022
• Publication Date: 2017-10-16T04:16:58Z
• Authors: Anderson E.X. Gavim; Gustavo H. Santos; Edgar H. de Souza; Paula C. Rodrigues; João B. Floriano; Ricardo C. Kamika...; Jeferson F. de Deus; Andreia G. Macedo
• Keywords: 02 engineering and technology; 0210 nano-technology

Abstract Two flexible electrochromic devices based on PEDOT:PSS were prepared by roll-to-roll method, these devices were built with the conventional layered geometry or using PEO:LiClO 4 and charge balancing material mixed at the same layer. Analysis of the properties leads to the conclusion that the presence of the percolation channels of PEDOT:PSS inside the PEO/LiClO 4 results in the performance improvement as monitored by impedance spectroscopy and the respective Randles equivalent circuits. From mixed electrochromic layer, η d increases up to 834 C −1 cm 2 after 1.5 s of switch time, while the corresponding layered device showed η d of 472 C −1 cm 2 at the same time interval.