Improper molecular ferroelectrics with simultaneous ultrahigh pyroelectricity and figures of merit
Wenru Li, Gang Tang, Guangzu Zhang, Hasnain Mehdi Jafri, Jun Zhou, Di Liu, Yang Liu, Jiesu Wang, Kuijuan Jin, Yongmin Hu, Haoshuang Gu, Zhao Wang, Jiawang Hong, Houbing Huang, Long‐Qing Chen, Shenglin Jiang, Qing Wang
Abstract
Our first-principles and thermodynamic calculations show that the strong coupling between the order parameters, i.e., the rotation angle of anions and polarization, is responsible for the colossal pyroelectric coefficient of the molecular ferroelectrics. Along with the facile preparation and self-poling features, the improper molecular ferroelectrics hold great promise for high-performance pyroelectric devices.
Topics & Concepts
PyroelectricityFigure of meritMaterials sciencePolarization (electrochemistry)Pyroelectric crystalCoupling (piping)Rotation (mathematics)FerroelectricityCondensed matter physicsNanotechnologyOptoelectronicsDielectricChemistryPhysicsComposite materialComputer sciencePhysical chemistryArtificial intelligenceSolid-state spectroscopy and crystallographyOrganic and Molecular Conductors ResearchPerovskite Materials and Applications