Flexible Electrochromic Materials

Electrochromic devices (ECDs) containing electroactive materials can reversibly change their optical absorbance and transmittance according to applied voltage, and this property is utilized in a variety of applications such as reflective displays, antiglare mirrors, smart windows and sensors. Electrochromic devices (EC), which dynamically change colour under applied potential, are widely studied for use in energy-efficient smart windows. To improve the viability of smart windows, many researchers are utilizing nanomaterials, which can provide electrochromic devices with improved coloration efficiencies, faster switching times, longer cycle lives, and potentially reduced costs. The flexible electrochromic films are promising film for applications in automobiles, buildings, etc. Solution processed tungsten trioxide (WO3)-based electrochromic devices (ECDs) are successfully demonstrated. The thin layers with nanostructured materials of WO3 inks were coated on flexible substrate at room temperature, solution-processed method. In contrast to conventional ECDs based on metal oxides, we controlled the substrate to perform flexible ECDs. The performances of flexible transparent conductive electrodes (TCEs) will be presented. The performances and reliability of with flexible TCE will be presented.