Guanidinium substitution-dependent phase transitions, ionic conductivity, and dielectric properties of MAPbI3

F B Minussi; E M Bertoletti; S P Reis; J F Carvalho; E B Araújo

doi:10.1039/d1cc06642k

Guanidinium substitution-dependent phase transitions, ionic conductivity, and dielectric properties of MAPbI₃

Chem Commun (Camb). 2022 Feb 10;58(13):2212-2215. doi: 10.1039/d1cc06642k.

Authors

F B Minussi¹, E M Bertoletti¹, S P Reis², J F Carvalho³, E B Araújo¹

Affiliations

¹ Department of Physics and Chemistry, São Paulo State University, 15385-000 Ilha Solteira, Brazil. fbminussi@gmail.com.
² Federal Institute of Education, Science and Technology of São Paulo, 15503-110 Votuporanga, Brazil.
³ Institute of Physics, Federal University of Goiás, 74690-900 Goiânia, Brazil.

PMID: 35072676
DOI: 10.1039/d1cc06642k

Abstract

Despite the proven enhancement of MAPbI₃ optoelectronic properties and stability by guanidinium substitution, divergences persist regarding fundamental knowledge on this system. This work shows that GA_xMA_1-xPbI₃ solid solutions have guanidinium content-dependent phase transitions, dielectric permittivities, ionic conductivities, activation energies, and relaxation times.