[14p-P08-1~24] 12.5 Organic and hybrid solar cells

[14p-P08-5] Perovskite Solar Cells Using π-Conjugated Polymers as Hole Transporting Layer (I) -Effect of Bromo Substituents-

〇(BC)Toranosuke Higashi¹, Masahiro Fujita¹, Masahiro Rikukawa¹, Yuko Takeoka¹ (1.Sophia Univ.)

Keywords:

Perovskite Solar Cells,Hole Transporting Layer,Conjugated Polymers

Spiro-OMeTAD is mainly used as the hole transport layer in perovskite solar cells (PSCs). While it exhibits high conductivity by the addition of dopants, its low durability due to the hygroscopic nature of dopants is an issue. π-Conjugated polymers are expected as an alternative. In this study, we synthesized two-types of conjugated polymers, poly[3-(6-bromohexyl)thiophene]-b-poly(3-hexylthiophene) and poly(3-hexylthiophene), and used for the hole transporting layer. The effect of Br substituents on the crystal structure and the power generation characteristics of PSCs was investigated.