Open Access Open Access  Restricted Access Subscription or Fee Access

Characterization of Electrochromic Properties of Polyaniline and Polyethylenedioxythiophene based Devices

Dang Hai Ninh, Nguyen Nang Dinh, and Pham Duy Long

Abstract


Polyaniline (PANI) and polyethylenedioxythiophene (PEDOT) onto ITO-coated glass samples were prepared by electro-polymerization. UV-Vis transmission spectra of the both films show that PEDOT films have a high transmittance in a range from 350 to 600 nm, whereas PANI films exhibit a light-green color. The PANI-PEDOT electrochromic devices exhibited a deep-blue coloration and a good reversible coloration /bleaching performance in 0.1M LiClO4 +PC electrolyte. The response time of the ECD coloration was found to be as small as 20 s and the coloration efficiency was found to be of 10.70 cm2 C-1. This demonstrates that the electropolymerized PANI and PEDOT films can be served as a good candidate for complementary ECD smart windows, taking advantage of their excellent properties in terms of chemical stability.

Full Text:

PDF