Nanotube-Based Ultrafast Electrochromic Display


  • The work was supported by Laboratory for Physical Sciences and University of Maryland. We thank Tim Maugel (Laboratory for Biological Ultrastructure, University of Maryland) for assistance with SEM and TEM.


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An ultrafast electrochromic display is fabricated based upon well defined nanotube arrays of poly(3,4-ethylenedioxythiophene), PEDOT (see Figure). The thin nature of the nanotube walls (10 – 20 nm) offers a short ion-diffusion distance, which results in an ultrafast switching rate (color-switching time < 10 ms). The arrayed long nanotube structure furnishes strong coloration.