Abstract: A dye-sensitized solar cell includes a first substrate, a first electrode, a semiconductor layer, a thin photosensitive dye layer, an electrolyte layer, a second electrode and a second substrate. The first electrode is formed on the first substrate as a working electrode, the semiconductor layer is formed on the first electrode and the thin photosensitive dye layer is formed on the semiconductor layer by ultrasound-treating the semiconductor layer which is immersed in a photosensitive dye solution. The second electrode is formed on the second substrate as a counter electrode and the electrolyte layer is disposed between the semiconductor layer and the second electrode.