| 초록 |
Dye-sensitized solar cells (DSSCs) have been developed rapidly by many research groups due to their various potentials, such as high efficiency and low-cost process. They are based on photosensitization of mesoporous TiO2 photoelectrode by adsorbed organic dyes. A solid-state semiconductor absorber is used in place of molecular dye. A range of semiconductors, such as CdS, CdSe, CdTe, PbS and Sb2S3 have attracted attention due to their unique advantages related to convenient band gap tuning by size control, large intrinsic dipole moments and higher molar extinction coefficients. Among the many candidates for metal chalcogenide-absorber, Sb2S3 seems to be attractive material because of its high absorption coefficient and suitable energy band gap. In this work, we report solid-state nanoporous solar cells using Sb2S3 as a light absorber and P3HT as a hole conductor on the surface of a TiO2 layer. We investigated the properties of Sb2S3 thin films and characteristics of devices by chemical bath deposition process time, reaction temperature and annealing condition. |
