LEVASSEUR, Delphin; MJEJRI, Issam; ROLLAND, Thomas; ROUGIER, Aline

doi:10.3390/polym11010179

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LEVASSEUR, Delphin
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]
Aquitaine Sciences Transfert

MJEJRI, Issam
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

ROLLAND, Thomas
Institut de Chimie de la Matière Condensée de Bordeaux [ICMCB]

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Polymers. 2019, vol. 11, n° 1, p. 179

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Poly(3,4-ethylenedi-oxythiophene) (PEDOT) derivatives conducting polymers are known for their great electrochromic (EC) properties offering a reversible blue switch under an applied voltage. Characterizations of symmetrical EC devices, built on combinations of PEDOT thin films, deposited with a bar coater from commercial inks, and separated by a lithium-based ionic membrane, show highest performance for 800 nm thickness. Tuning of the color is further achieved by mixing the PEDOT film with oxides. Taking, in particular, the example of optically inactive iron oxide Fe2O3, a dark blue to reddish switch, of which intensity depends on the oxide content, is reported. Careful evaluation of the chromaticity parameters L*, a*, and b*, with oxidizing/reducing potentials, evidences a possible monitoring of the bluish tint.< Leer menos

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Electrochromic

display

PEDOT:PSS

Fe2O3

color-tuning

colorimetry

Fe 2 O 3

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Color tuning by oxide addition in PEDOT:PSS-based electrochromic devices

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