[19a-P5-1~38] 12.5 Organic solar cells

[19a-P5-30] Effect of the combination of solvents on the photovoltaic properties in CH₃NH₃PbI₃ perovskite solar cells using solvent-bathing method

〇Takashi Fujihara¹, Shinobu Terakawa², Toshinori Matsushima², Chuanjiang QIN², Masayuki Yahiro¹, Chihaya Adachi^1,2 (1.ISIT, 2.OPERA, Kyushu-Univ.)

Keywords:Inorganic-organic hybrid perovskite solar cell,solvent annealing method,Structure Control

In this study, the effect of the combination of solvents in the solvent-bathing method on the photovoltaic properties were investigated in CH₃NH₃PbI₃ perovskite solar cells (PSCs). Using DMSO as a good solvent for precursor solution, the short-circuit current (J_sc = 15.54 mA/cm²) and fill factor (F.F. = 0.75) were increased and the dispersion of the parameters was improved compare to the case using NMP. It should be attributed to the slower construction speed from the precursor state to the perovskite structure.