[14a-A402-1~9] 12.5 Organic solar cells

[14a-A402-1] Tin-based Perovskite Solar Cells using Reducing Agents

〇Tomoya Nakamura¹, Shinya Yakumaru¹, Jiewei Liu¹, Kyusun Kim¹, Kento Otsuka¹, Shuaifeng Hu¹, Taketo Handa¹, Yoshihiko Kanemitsu¹, MinhAnh Truong¹, Richard Murdey¹, Atsushi Wakamiya¹ (1.ICR, Kyoto Univ.)

Keywords:Perovskite solar cell, Tin, Reducing agent

One of the factors limiting the performance of tin-based ASnX₃-type perovskite solar cells is the formation of Sn(IV) species by the oxidation of Sn(II). Here, we show that the addition of dihydropyrazine as a scavenger to reduce Sn(IV) to Sn(II) improves the electrical properties of the perovskite films and solar cell performance.