期刊
POLYMERS
卷 11, 期 1, 页码 -出版社
MDPI
DOI: 10.3390/polym11010179
关键词
Electrochromic; display; PEDOT:PSS; Fe2O3; color-tuning; colorimetry
资金
- European Institute of Innovation and Technology (EIT)
- European Union
- Aquitaine Science Transfert
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.
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