[Methylhydrazinium]₂PbCl₄, a Two-Dimensional Perovskite with Polar and Modulated Phases.

ABSTRACT: Two-dimensional (2D) lead halide perovskites are a family of materials at the heart of solar cell, light-emitting diode, and photodetector technologies. This perspective leads to a number of synthetic efforts toward materials of this class, including those with prescribed polar architectures. The methylhydrazinium (MHy⁺) cation was recently presumed to have an unusual capacity to generate non-centrosymmetric perovskite phases, despite its intrinsically nonchiral structure. Here, we witness this effect once again in the case of the Ruddlesden-Popper perovskite phase of formula MHy₂PbCl₄. MHy₂PbCl₄ features three temperature-dependent crystal phases, with two first-order phase transitions at T₁ = 338.2 K (331.8 K) and T_2<

SUBMITTER: Fedoruk K 

PROVIDER: S-EPMC9533301 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature