R. Szostak, P. E. Marchezi, A. dos S. Marques, J. C. da Silva, M. S. de Holanda, M. M. Soares, H. C. N. Tolentino, A. F. Nogueira, Exploring the formation of formamidinium-based hybrid perovskites by antisolvent methods, in situ GIWAXS measurements during spin coating, Sustainable Energy & Fuels 3, 2287-2297 (2019).