[18a-M_101-1~9] 12.8 Specific theme: Photoelectric Properties, Device Fabrication and Structural Controls of Organic-Inorganic Hybrid Perovskites

10:45 AM - 11:00 AM JST(1:45 AM - 2:00 AM UTC)Presentation by Applicant for JSAP Young Scientists Presentation Award

[18a-M_101-4] Hole-Collecting Materials for Perovskite Solar Cells Based on Ultrathin Cross-linked Molecular Layer Fabricated through in-situ Reaction on Substrate

〇(M2)Yukhe Ling¹, Ruito Hashimoto¹, Linbo Wan¹, Tomoya Nakamura¹, Minh Anh Truong¹, Richard Murdey¹, Atsushi Wakamiya¹ (1.Kyoto Univ. ICR)

Keywords:

perovskite,hole transporting material,crosslinking

We developed an ultrathin cross-linked molecular film that combines the advantages of optical transparency and durability by utilizing the thiol–yne reaction. A mixed solution of a newly synthesized alkyne substrate, ITA-Et, and benzenetrithiol was spin-coated onto an ITO substrate and subsequently heated to induce the thiol-yne reaction on the substrate. After rinsing, only the molecular layer in contact with the ITO surface remained fixed to the ITO surface through interfacial interactions, while the excess material was removed by rinsing, resulting in a film that exists almost as a monolayer polymer. When this film was used as a hole-collecting layer in a perovskite solar cell, a maximum power conversion efficiency of 21% was achieved.