Preparation of BiFeO3 thin film by the liquid phase deposition (LPD) method on functionalized organic self-assembled monolayers (SAMs)

BiFeO3 thin films were prepared for the first time on the functionalized self-assembled monolayers (SAMs) by the liquid phase deposition (LPD) method. The measurement of contact angle showed that after the substrate was immersed into octadecyl trichlorosilane (OTS) solution for 30 min, the surface of the substrate was covered with a layer of hydrophobe. The hydrophobe on the substrate was changed into hydrophile after UV irradiation. It was found that the octadecyl trichlorosilane self-assembled monolayers (OTS-SAMs) as chemical templates played an active role in controlling nucleation and growth of BiFeO3 thin film. The study on the effect of different soaking times showed that the BiFeO3 thin film was a layer growth model and the optimum deposition time was 12 h.