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Formamidine and cesium-based quasi-two-dimensional perovskites as photovoltaic absorbers.
Title Formamidine and cesium-based quasi-two-dimensional perovskites as photovoltaic absorbers.
Authors Hamaguchi, R.; Yoshizawa-Fujita, M.; Miyasaka, T.; Kunugita, H.; Ema, K.; Takeoka, Y.; Rikukawa, M.
Journal Chem Commun (Camb)
DOI 10.1039/c7cc00921f
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)2FAPb2I7 were found to be superior to those of other homologous quasi-2D perovskite compounds.