| 초록 |
Since Kojima et al. reported CH3NH3PbI3 (MAPbPbI3) and CH3NH3PbBr3 (MAPbBr3) perovskite sensitized solar cells, intensive studies have been done to develop efficient solid-state perovskite hybrid solar cells. Organometal halide perovskite (RMX3) materials have received great attention because of their unique properties such as high absorptivity, large dipole moment, and solution processibility. The mixed halide perovskite (CH3NH3PbI3-xClx, MAPbI3-xClx) is used for highly efficient photovoltaic material because of its improved charge transport property and diffusion length by Cl doping without band gap change. In terms of reproducibility, the long diffusion length of charge carriers is more desirable because the efficiency deviation is not large even though the thickness of perovskite layer is fluctuated by the coating process. To obtain uniform the film of MAPbI3-xClx reproducibly, we separated the process to the formation of MAPbI3-xClx and the film deposition of MAPbI3-xClx. Here, we tried to deposit mixed halide perovskite thin-film via single step spin-coating process. |
