･It clarifies the correlation between the device performance and the number of spins (Nspin) that corresponds to the number of accumulated charges in the cells.
･The performance changes in the solar cells are subject to changes in the state of the photoactive layer and electron transport layers, which are the constituent materials of solar cells.
･Applying an n-type semiconductor among the three types of semiconductor materials to the photoactive layer suppresses the accumulation of charge due to light irradiation, thereby reducing the degradation of the solar cell.
