科研之友
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摘要
Poly(3,5-diaminobenzotrifluoride) (PDAT) films with controlled thickness have been successfully grown on fluorine-doped tin oxide (FTO) glass substrates using the cyclic voltammetry (CV) method at room temperature, followed by Pt particles depositing on the PDAT films by electrochemical method. The morphology of PDAT films and aggregation of Pt particles were investigated by scanning electron microscopy (SEM). Fourier transform infrared (FT-IR) spectra and UV-vis absorption spectra were employed to characterize the chemical structure of PDAT. Solar cells made of PDAT film which were used as counter electrode and the N719 dye-sensitized TiO2 used as anode were fabricated. The photovoltaic performance of the solar cells was tested. We investigated the influence of various Pt loadings on efficiency of solar cells. With the increasing of Pt loadings, the morphologies changed and the efficiency of solar cells increased. We also investigated the electrochromic properties of PDAT. As the voltage increased, the color of the PDAT film turned from pale yellow to yellow with good reversibility. It shows that PDAT can be used as electronic display materials.
