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IJFTR Vol.36(4) [December 2011] >

Title: Flexible displays for smart clothing: Part II— Electrochromic displays
Authors: Meunier, Ludivine
Kelly, Fern M
Cochrane, Cédric
Koncar, Vladan
Keywords: Conducting polymer
Electrochromic display
Flexible display
Prussian blue
Issue Date: Dec-2011
Publisher: NISCAIR-CSIR, India
Abstract: Chromic materials have the ability to change their colour reversibly according to external environmental conditions. They are categorised by the stimulus that triggers the colour change. For example, thermochromic materials can be defined as those in which a colour change is induced by a change in temperature and electrochromic materials are those in which a colour change is induced when an electrical current is applied. Thermochromism is already a well-known application within the textile field, however electrochromism is not as common. In this paper, an overview of the field of electrochromic devices has been presented and the successful development of a first generation flexible textile electrochromic device, achieved by ourselves, is discussed. The flexible electrochromic textile display consists of a novel 4-layer sandwich structure containing a thin spacer fabric with electrochromic compound (Prussian blue), a conductive layer and two electrodes; bottom and upper (transparent). If powered with a low voltage battery, this structure is able to generate a reversible colour change. The switching times have been measured at ~ 5 s and 4.5 V. The colour changes are monitored via CIE L*, a*, b* values.
Page(s): 429-435
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-1025 (Online); 0971-0426 (Print)
Source:IJFTR Vol.36(4) [December 2011]

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