TRANSMISSION SPECTRA OF AN ELECTROCHROMIC WINDOW BASED ON POLYANILINE, PRUSSIAN BLUE AND TUNGSTEN-OXIDE

The demand for energy savings in buildings will increase in the coming years, as the world's attention is drawn towards environmental aspect s and energy economizing. Windows which are able to dynamically contro l the sun radiation through-put will play an important role. In this r espect we have studied two different electrochromic window configurati ons; one based on the two complementary electrochromic materials polya niline (PANI) and tungsten oxide (WO3), the other one with the electro chromic coating Prussian blue (PB) in addition to PANI and WO3. The in clusion of PB enhances the transmission modulation. Integrating over t he solar spectrum we find that the window based on PANI and WO3 is abl e to regulate 39% of the total solar energy, while with the inclusion of PB we manage to regulate as much as 50% of the sun radiation.