Giant room temperature electrocaloric effect in a layered hybrid perovskite ferroelectric: [(CH₃)₂CHCH₂NH₃]₂PbCl₄.

ABSTRACT: Electrocaloric effect driven by electric fields displays great potential in realizing highly efficient solid-state refrigeration. Nevertheless, most known electrocaloric materials exhibit relatively poor cooling performance near room temperature, which hinders their further applications. The emerging family of hybrid perovskite ferroelectrics, which exhibits superior structural diversity, large heat exchange and broad property tenability, offers an ideal platform. Herein, we report an exceptionally large electrocaloric effect near room temperature in a designed hybrid perovskite ferroelectric [(CH₃)₂CHCH₂NH₃]₂PbCl₄, which exhibits a sharp first-order phase transition at 302 K, superior spontaneous polarization (>4.8 μC/cm

SUBMITTER: Liu X 

PROVIDER: S-EPMC8463535 | biostudies-literature | 2021 Sep

REPOSITORIES: biostudies-literature