At present, one potential reason why electrochromic polymer devices have not been commercialized could be the limitation of low cost, high volume manufacturability. In situ polymerization of electroactive monomers has simplified the fabrication of polymeric electrochromic devices. With this in situprocess, monomers are directly dissolved into a gel polymer electrolyte and sandwiched between two electrodes. With subsequent exposure to UV light, a solid gel electrolyte matrix is formed, where conversion of monomers takes place with the application of appropriate potential. In order to have useful applications, electrochromic devices must have color uniformity, high photopic contrast, fast switching speed and good optical memory. Photopic contrast is an essential property for smart windows and eyewear. It is necessary to study how material and device properties such as monomer loading, diffusion coefficient of monomers, thickness of the gel electrolyte, polymerization time, thickness of the polymer layer, and temperature affect the photopic contrast and switching speed. A relationship between device performance and above�mentioned factors has been established.

Conjugated polymer formation with assembled devices for electrochromics

247th National Meeting (2014)

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