期刊
JOURNAL OF MATERIALS CHEMISTRY
卷 13, 期 10, 页码 2422-2428出版社
ROYAL SOC CHEMISTRY
DOI: 10.1039/b306365h
关键词
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Reflective and absorptive/transmissive polymer electrochromic devices (ECDs) composed of spray-coated films of poly(3,3-bis(octadecyloxymethyl)-3,4-dihydro-2H-thieno[3,4-b][1,4] dioxepine)(PProDOT(CH2OC18H37)(2)) and poly(3,3-bis(2-ethylhexyloxymethyl)-3,4-dihydro-2H-thieno[3,4-b][1,4] dioxepine) (PProDOT(CH(2)OEtHx)(2)) layers as cathodically coloring polymers and poly(3,6-bis(2,3-dihydrothieno[3,4-b][1,4] dioxin-5-yl)-9-methyl-9H-carbazole) (PBEDOT-NMeCz) as the anodically coloring polymer have been constructed and evaluated. These devices exhibit low switching voltages (+/-1.2 V), high visible contrast values, sub-second switching times, and high switching stability in atmospheric conditions. The reflective ECD comprising PProDOT(CH(2)OEtHx)(2) as the active layer demonstrates an unusual electrochromic behavior. By regulating the applied voltage, a high reflectance contrast of greater than 70% DeltaT was achieved in the NIR region (2 mum) without any noticeable color change of the device.
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