title: Formamidine and cesium-based quasi-two-dimensional perovskites as photovoltaic absorbers.
abstract: Formamidine (FA) and cesium (Cs) cations were introduced into quasi-two-dimensional (2D) perovskites as B site cations. The unique crystalline growth of the resulting (n-C6H13NH3)2FAPb2I7, which promotes charge transport in photovoltaic solar cells, was confirmed, as was the stability of this material. The photovoltaic properties of (n-C6H13NH3)2FAPb2I7were found to be superior to those of other homologous quasi-2D perovskite compounds.
authors.affiliation: Faculty of Science and Engineering, Sophia University, 7-1 Kioi-cho, Chiyoda-ku, Tokyo, 102-8554, Japan. y-tabuch@sophia.ac.jp.
authors.forename: R
authors.initials: R
authors.lastname: Hamaguchi
authors.forename: M
authors.initials: M
authors.lastname: Yoshizawa-Fujita
authors.forename: T
authors.initials: T
authors.lastname: Miyasaka
authors.forename: H
authors.initials: H
authors.lastname: Kunugita
authors.forename: K
authors.initials: K
authors.lastname: Ema
authors.forename: Y
authors.initials: Y
authors.lastname: Takeoka
authors.forename: M
authors.initials: M
authors.lastname: Rikukawa