Patternable transparent carbon nanotube films for electrochromic devices

This paper reports the application of transparent single walled carbon nanotube films on polyethylene terephthalate as flexible electrodes in electrochromic devices using polyaniline as the active layer, where Sn-doped In2O3 on plastic is not suitable due to its high sensitivity to acids. Patterning of nanotube films with resolution of 50 mu m is achieved by simply using the transfer printing method based on polydimethylsiloxane stamps. The combination of high optical transparency, low sheet resistance, robust mechanical and environmental stabilities, and ease of patterning of nanotube films meets the requirements for flexible voltage-driven type of displays. (c) 2007 American Institute of Physics.