fig8

Figure 8. Electrochromic characterization of polymer-based flexible devices. Spectroelectrochemistry and color change of flexible ECDs: PT (A); PTT (B); PDTT (C). Long-term switching stability of such patterned flexible ECDs: PT (D); PTT (E); PDTT (F), with an interval of 20 s. ECDs: Electrochromic devices; PT: polythiophene; PTT: poly(thieno[3,2-b]thiophene); PDTT: poly(dithieno[3,2-b:2’,3’-d]thiophene).