[20a-G202-1~10] 12.5 Organic solar cells

[20a-G202-1] Fabrication and Evaluation of Perovskite Materials Composed of Amines with Functional Group (II)- Effect of Hydrogen Bond on Structure and Surface Properties -

〇Ryosuke Arai¹, Masahiro Fujita¹, Yuko Takeoka¹, Masahiro Rikukawa¹ (1.Sophia Univ.)

Keywords:perovskite solar cells, two-dimensional perovskites, hydrogen bond force

Two-dimensional perovskite compounds with the general formula, A₂PbX₄ (A = RNH₃⁺; X = Cl^-, Br^-, I^-), are excellent in stability and can be expected to be applied to long-lived perovskite solar cells. By introducing carboxy group at the terminal of alkylammoniums within two-dimensional perovskites, hydrogen bonds are formed between ammonium molecules, and the phase-transition can be suppressed. In this study, [COOH(CH₂)₆NH₃]₂PbI₄ was fabricated, and the influences of hydrogen bond on the perovskite properties were investigated by calculating the surface free energy.