Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1675535 | Thin Solid Films | 2007 | 4 Pages |
Titanium dioxide (TiO2) thin films were deposited on indium tin oxide (ITO) coated glass substrates by a liquid phase deposition method using two different precursor concentrations of 0.01 M and 0.005 M [NH4]2TiF6. Characterizations of the deposited TiO2 films were performed by using different spectroscopic techniques including X-ray photoelectron spectroscopy, Raman spectroscopy and X-ray diffraction. From scanning electron microscopy observation, the surface of the TiO2 films show a ricelike morphology. We have fabricated polymer-based photovoltaic cells (PCs) using the studied TiO2 films and compared their performances to those using bare ITO-coated glass substrates. The structure of the PCs is glass/ITO/TiO2/PCBM:P3HT/Au where PCBM:P3HT is poly(3-hexylthiophene) and [6,6]-phenyl-C61-butyric acid methyl ester. The power conversion efficiency of these devices is determined to be 0.85%, which is higher than that of similar devices without TiO2 films (0.13%).