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

[14p-P08-9] Hole Transporting Material for Perovskite Solar Cell Based on Polymers from Thiol-yne Reactions

〇Yukhe Ling¹, Ruito Hashimoto¹, Shota Hira¹, Wan Linbo¹, Tomoya Nakamura¹, Minh Anh Truong¹, Richard Murdey¹, Atsushi Wakamiya¹ (1.Kyoto Univ. ICR)

Keywords:

perovskite solar cell,hole transporting material,click reaction

We developed anchor-free polymeric hole transporting material (HTM) by utilizing thiol-yne reaction. By mixing tris(4-ethynylphenyl)amine and 1,3,5-benzenetrithiol in room temperature, reaction takes place very immediately and polymers are formed. It is also possible to import various functional groups into the polymer network or to tune HOMO level of the polymers. When the spin-coated polymers are annealed, an insoluble membrane is formed, enabling the coating of other layers onto the HTM layer, which has no anchor groups. A power conversion efficiency (PCE) of 15.1% was achieved in inversed lead perovskite solar cell using this HTM.