In situ colorimetric analysis of electrochromic polymer films and devices

Here we present an overview of an in situ method of electrochromic polymer characterization based on the CIE system of colorimetry. As illustrated here for PBuDOP (poly(3,4-butylenedioxypyrrole)), colorimetric analysis allows for precise understanding of color change and the accessible color states of an electrochromic polymer. This technique has proven to be a convenient method for the design and construction of electrochromic devices and promises to reduce trial and error in device construction while allowing for the fine-tuning and reproducibility of color.