Ma̧czka, Mirosl̷aw
Ptak, Maciej
Ga̧gor, Anna
Stefańska, Dagmara
Zarȩba, Jan K.
Sieradzki, Adam
2020-01-24
Three-dimensional (3D) lead halide perovskites have emerged as a promising class of coordination polymers for solar cells, photodetectors, and light-emitting devices. These compounds thus far comprise methylammonium, formamidinium, or cesium as cations. In this work, we introduce a new methylhydrazinium 3D perovskite, CH3NH2NH2PbBr3, that crystallizes in the polar P21 structure at room temperature and undergoes a phase transition to the cubic Pm3̅m phase at 418 K. This perovskite exhibits strong second-harmonic generation activity, features switchable dielectric behavior, thermochromism, and two-photon energy upconversion under 800 nm excitation.
https://doi.org/10.1021/acs.chemmater.9b05273
oai:zenodo.org:5845302
Zenodo
info:eu-repo/semantics/openAccess
Other (Open)
Chemistry of Materials, 32(4), 1667-1673, (2020-01-24)
Methylhydrazinium Lead Bromide: Noncentrosymmetric Three-Dimensional Perovskite with Exceptionally Large Framework Distortion and Green Photoluminescence
info:eu-repo/semantics/article