Presentation Information
[11a-PB1-31]Porous PEDOT Integrated with WO3/ZnO:Ga Nanorods for Enhanced Electrochromic Performance and Cycling Stability
〇Yang SuHua1, Huang Yuan-Hong1, Ho Chih-Chieh1, Huang Shang-Jia1 (1.National Kaohsiung Univ. Sci. Tech.)
Keywords:
Electrochromic,Optical modulation,Nanorods
Porous PEDOT nanostructures were synthesized by electrochemical polymerization, while ZnO:Ga nanorods were prepared via a low-temperature hydrothermal process. A WO3 layer was deposited onto the ZnO:Ga nanorods by RF sputtering to form a WO3/ZnO:Ga hierarchical structure. SEM images showed that increasing PEDOT deposition cycles increased film thickness, resulting in longer ion diffusion pathways and slower electrochromic response. The PEDOT film deposited for 6 cycles exhibited the highest optical modulation and coloration efficiency, although its cycling stability gradually deteriorated. To overcome this limitation, a PEDOT/WO3/ZnO composite film was developed. The synergistic effects of porous PEDOT, WO3, and ZnO:Ga enhanced ion transport, charge storage, electron transfer, and film adhesion. Consequently, the composite film achieved an 83.2% increase in optical modulation, a 4.24-fold increase in coloration efficiency, and significantly improved cycling stability.