Structure and Morphology of Nanosized PbS on TiO2 Nanoporous Film in Dye-Sensitized Solar Cells

The structure and morphology of nanosized PbS were studied, by high-resolution transmission electron microscope (HR-TEM) and X-ray diffraction (XRD) analysis. A three-layer coating of nanosized PbS was synthesized by an in situ method on TiO2 films. The results showed that in the PbS clusters, 2–3 nm particles form the major part, although some 3–10 nm particles also existed. The sizes of the particles distributed in a certain range. Such distribution played an important role in the surface modification of dye-sensitized solar cells.

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