An investigation on the performance of Di-isopropyl benzyl derivative of Poly (3, 4-propylene dioxythiophene) thin film based electrochromic pixels displays

Raja, L and Siju, C R and Kumar, Hajeesh and Sunil, Malavika S and Anil, Aswathy P and Nivin, T S and Shivaprakash, N C and Sindhu, S (2019) An investigation on the performance of Di-isopropyl benzyl derivative of Poly (3, 4-propylene dioxythiophene) thin film based electrochromic pixels displays. In: MATERIALS RESEARCH EXPRESS, 6 (10).

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Abstract

Electrochromic (EC) smart pixel display was designed and fabricated using a novel monomer di-4-isopropyl benzyl substituted (3, 4-propylene dioxythiophene) (ProDOT-IPBz(2)). The polymer thin film showed absorption between 450 and 650 nm at a fully reduced state. The absorption peak narrowed down slightly towards longer wavelength region (850-900 nm) at the oxidation states. Siju et al has reported the coloration efficiency (CE) of the thin film as similar to 305 cm(2) C-1. The ProDot-IPBZ(2) thin film was used to fabricate EC pixel display of 2 x 2 pixel array on a patterned ITO coated glass. The optical color contrast of the EC pixel display is 40% at 600 nm, with a switching time of about 2 s and 2.5 s respectively. The CE of EC pixel was found to be 555 cm(2) C-1 at 600 nm in the fully doped state. This EC pixel switched for more than 1000 cycles with good color contrast (< 5% T). EC pixel displays showed transmissive, magenta and violet colored states at applied potentials of 1.5, -1.0 and -2.0 V respectively. This EC pixel display is efficient with faster response time and better color contrast.

Item Type:	Journal Article
Publication:	MATERIALS RESEARCH EXPRESS
Publisher:	IOP PUBLISHING LTD
Additional Information:	copyright for this article belongs to IOP PUBLISHING LTD
Keywords:	electrochromic; conducting polymer; display
Department/Centre:	Division of Physical & Mathematical Sciences > Instrumentation Appiled Physics
Date Deposited:	17 Sep 2019 11:57
Last Modified:	17 Sep 2019 11:57
URI:	http://eprints.iisc.ac.in/id/eprint/63546

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