[18a-PB01-1~25] 12.5 Organic and hybrid solar cells

[18a-PB01-16] Stabilization of a-FAPbI₃ by addition of dopamine hydrochloride

〇Ryohei Oonaga^1,3, Naoyuki Shibayama², Masashi Ikegami², Tsutomu Miyasaka², Yu Miyazawa³, Daisuke Kobayashi³, Kazuyuki Hirose^1,3, Tomoyuki Yamamoto¹ (1.Waseda Univ., 2.Toin Univ. of Yokohama, 3.JAXA)

Keywords:perovskite

FAPbI₃ is a crystal with structural polymorphism, and the phase transition from α-FAPbI₃ with perovskite structure to δ-FAPbI₃ without perovskite structure at room temperature in air causes a significant decrease in energy conversion efficiency. To solve this problem, in this study, α-FAPbI₃ with dopamine hydrochloride (DA) is prepared and evaluated its effect on stability at room temperature in air by X-ray diffraction (XRD) measurements.