2024-01-192024-01-192022MINUSSI, F. B. et al. Guanidinium substitution-dependent phase transitions, ionic conductivity, and dielectric properties of MAPbI 3. Chemical Communications, Amsterdam, v. 58, n. 13, p. 2212-2215, 2022. DOI: 10.1039/d1cc06642k. Disponível em: https://www.sciencedirect.com/org/science/article/abs/pii/S1359734522005195. Acesso em: 9 nov. 2023.1359-7345e- 1364-548Xhttps://www.sciencedirect.com/org/science/article/abs/pii/S1359734522005195Despite the proven enhancement of MAPbI3 optoelectronic properties and stability by guanidinium substitution, divergences persist regarding fundamental knowledge on this system. This work shows that GAxMA1−xPbI3 solid solutions have guanidinium content-dependent phase transitions, dielectric permittivities, ionic conductivities, activation energies, and relaxation times.engAcesso RestritoArtigo10.1039/d1cc06642k