Influence of HCl-doping on physical, optical, and electrical properties of PEDOT:PSS films

Abstract

In this study, the preparation of HCl-doped PEDOT:PSS films was performed on fluorine-doped tin oxide substrates using spin coating method. The only SnO2 peaks were observed in the X-ray diffraction patterns. However, the functional groups that the FT-IR showed match with PEDOT and PSS. Contact angle measurement revealed that contact angle values increased for HCl-doped PEDOT:PSS films in comparison with undoped ones, which implies water tolerance improvement. In terms of optical transmittance, there were similar transmittance spectra for undoped and HCl-doped PEDOT:PSS films. Sheet resistance measurements exhibited that sheet resistance values decreased to the minimum values of 6.67 Ω/sq for HCl-doped PEDOT:PSS conditions. This indicates that the sheet resistance of PEDOT:PSS films can be reduced by HCl. Therefore, the HCl-doping could potentially be a suitable alternative for improving humidity tolerance and conductivity of PEDOT:PSS films.

Comparison of ZnO Nanoparticles Prepared by Precipitation and Combustion for UV and Sunlight-Driven Photocatalytic Degradation of Methylene Blue

“…In Figure 7 b, FTIR spectra in the range of 4000–450 cm −1 were analyzed to investigate functional groups of the ZnO NPs. The peaks at 490 cm −1 contributed to the ZnO structure, due to the Zn-O vibration [ 33 ]. The peaks at 819 and 1647 cm −1 corresponded to C=O stretching [ 11 ].…”

Investigation of structural, optical, and electrical properties of PEDOT:PSS/Au/PEDOT:PSS multilayer films

“…However, this study reveals decreasing trends in both transmittance and Rs. Thus, the determination of the optimum conditions for transmittance and Rs was conducted by evaluating the figure of merit (FOM), defined as T 10 /Rs [8,9]. The FOM values presented in table 1 indicate that the maximum FOM was achieved with an Au thickness of 2 nm.…”