Journal
SYNTHETIC METALS
Volume 143, Issue 1, Pages 31-35Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.synthmet.2003.10.017
Keywords
electrochromism; dual-type ECD; single-type ECD; poly(3-tetradecylthiophene); poly(3,4-etliylenedioxythiopliene)
Ask authors/readers for more resources
Two single- and a dual-type electrochromic devices (ECDs) based on poly(3-tetradecylthiophene) (PTDT) and poly(3,4-ethylenedioxythiophene) (PEDOT) with lithium salt in PMMA gel-media were prepared. In the single-type ECDs, red PTDT (lambda(max): 494 nm) and blue PEDOT (lambda(max): 596 nm) in the reduced states could be switched to their bleached oxidized forms. In the dual-type ECD, the color changed between dark red 502 nm) and dark blue (lambda(max): 602 nm) by switching the applied voltage (E(PTDT) versus E(PEDOT)) between -2.2 and 2.2 V Its electronic absorption was a combination of those of PTDT and PEDOT. Its optical switching rate was much faster than the single-type ECDs. It is presumably because the capacitive charging of each bare ITO electrode in the single-type ECDs partially compensates the applied voltage while in the dual-type ECD, both the electrodes participate in the faradaic reactions. In this dual-type ECD, when one of the electrodes takes part in coloring electrode, the other takes part in complementary electrode leading to fast switching. (C) 2003 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available