Presentation Information
[22p-P03-8]Thermodynamic ionization levels of perovskite solar cells using first-principles calculations
〇(B)Shota Kawachino1, Naomu Sekiguchi2, Kohei Takasaki2, Qing Wang2, Satoshi Iikubo2 (1.Kyushu Univ. Engneering., 2.Kyushu Univ. IGSES)
Keywords:
perovskite solar cells,first-principles calculations
Toxicity is a problem with lead-based perovskite solar cells. For this reason, research is underway to use tin instead of lead in solar cells, but lattice defects are likely to occur and stability is low. Thermodynamic ionization levels are formed within forbidden band under the influence of lattice defects. Since the thermodynamic ionization levels trap carriers, the photoelectric conversion efficiency decreases. In this study, we investigated the thermodynamic ionization levels in perovskite solar cells using first-principles calculations.