This study examined the effects of THF (tetrahydrofuran)-EtOH (ethanol) binary solvents on the formation of conducting poly (3,4-ethylenedioxythiophene) (PEDOT) nanofilms on (3-aminopropyl)trimethoxysilane (APS)-coated SiO₂ surfaces by vapor phase polymerization (VPP). Rutherford backscattering spectrometry (RBS) showed that the spin-coated FeCl₃ oxidants consisted of Fe, Cl, C, and O. The carbon in the oxidant film was attributed to the inclusion of solvent in the film, and the FeCl₃ oxidant spin-coated film with a THF-EtOH ratio of 1 had a higher level of C than the film spin-coated with a pure EtOH solvent. The inclusion of solvent affected the formation of the subsequent PEDOT film, thereby influencing the film properties, such as the conductivity and surface morphology. Increasing the THF/EtOH ratio to 0.5 tended to minimize the surface roughness while further increase beyond this resulted in increased surface roughness, thus indicating the existence of an optimum THF/EtOH ratio. The highest conductivity (525 S/cm) was obtained in the PEDOT films deposited with THF:EtOH (wt. %) = 1.|In addition, the PEDOT films showed poor adhesion on the oxidant films deposited from a 50–50 wt. % solvent, possibly due to shielding effects of the THF solvent present between the PEDOT and APS monolayer.

这项研究检查了THF（四氢呋喃）-EtOH（乙醇）二元溶剂对（3-氨基丙基）三甲氧基硅烷（APS）涂覆的SiO ₂表面上导电聚（3,4-乙烯二氧噻吩）（PEDOT）纳米膜形成的影响。气相聚合（VPP）。卢瑟福背散射光谱法（RBS）表明，旋涂的FeCl ₃氧化剂由Fe，Cl，C和O组成。氧化剂膜中的碳归因于膜中包含溶剂和FeCl ₃THF-EtOH比为1的氧化剂旋涂膜比旋涂纯EtOH溶剂的膜具有更高的C水平。包含溶剂会影响后续PEDOT膜的形成，从而影响膜的性能，例如电导率和表面形态。将THF / EtOH之比增加到0.5趋于使表面粗糙度最小，而进一步增加则导致表面粗糙度增加，因此表明存在最佳THF / EtOH之比。在以THF：EtOH（wt。％）= 1沉积的PEDOT膜中获得最高电导率（525 S / cm）。|此外，在50-50 wt。％溶剂，可能是由于存在于PEDOT和APS单层之间的THF溶剂的屏蔽作用。