Water resistance improvement of PEDOT:PSS films by incorporating Au thin films
Keywords:
PEDOT:PSS, Au layer, DC sputtering technique, Contact angle, Water resistanceAbstract
The instability of PEDOT:PSS films under moisture and oxygen environments affects their performance. This study presents the improvement of PEDOT:PSS film surface corrosion resistance through the deposition of an Au layer. Structural analysis revealed that both the uncoated and the Au-coated PEDOT:PSS (PEDOT:PSS/Au) films exhibited an amorphous morphology. The functional groups in PEDOT:PSS were identified, including C–S and C–C, which are characteristic of PEDOT, and S=O, which corresponds to the functional groups of PSS. Transmission measurements indicated a small decrease in transmittance for the PEDOT:PSS/Au films, attributing the obscuration by the Au layer. The contact angle (CA) analysis demonstrated that the PEDOT:PSS/Au films exhibited higher CA values ranging from 83.39% to 106.48% in comparison with those of the pristine PEDOT:PSS films prepared at the same speed. Consequently, the deposition of an Au layer significantly improves the water resistance of the PEDOT:PSS/Au films.
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