Publication date: 1 April 2017
Source:Thin Solid Films, Volume 627
Author(s): Evrim Baran, Birgül Yazıcı
Poly (3-hexylthiophene) sensitized Ag doped TiO2 -NTs (P3HT/Ag-TiO2 -NTs) have been prepared using the three sequential steps: two step anodization, galvanostatic deposition and spin coating techniques. The morphology and structure of P3HT synthesized by oxidative polymerization with FeCl3 were characterized using NMR, FT-IR, SEM, XRD and optical properties of P3HT were investigated using Uv–Vis technique. The characterization results showed that the P3HT has 64.7%HT-HT configuration, mainly edge-on oriented lamellar structure and the optical band gap of 2.242 -NTs were determined by FE-SEM and XRD. The electrochemical behaviors of P3HT/Ag-TiO2 -NTs in acetonitrile electrolyte contained I−/I3 − were examined by utilizing Electrochemical Impedance Spectroscopy (EIS) and Cyclic Voltammetry (CV). The EIS results displayed that after the modification with P3HT, the value of charge transfer resistance at −2 -NTs. Furthermore, the analysis results of EIS and Mott-Schottky for P3HT/Ag-TiO2 -NTs under simulated solar light revealed that the charge transfer resistance decreased from 121D ) increased from 8.69
Source:Thin Solid Films, Volume 627
Author(s): Evrim Baran, Birgül Yazıcı