Hybrid organic-inorganic perovskites: Polar properties and applications

•Hybrid organic-inorganic perovskites (HOIPs) experience a number of phase transitions and many are polar at room temperature.•High spontaneous polarization and piezoelectric response are attractive for various applications.•Possible mechanisms of the appearance of polar phases and ferroelectricity...

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Bibliographic Details
Published inCoordination chemistry reviews Vol. 387; pp. 398 - 414
Main Authors Xu, Wei-Jian, Kopyl, Svitlana, Kholkin, Andrei, Rocha, João
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.05.2019
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Summary:•Hybrid organic-inorganic perovskites (HOIPs) experience a number of phase transitions and many are polar at room temperature.•High spontaneous polarization and piezoelectric response are attractive for various applications.•Possible mechanisms of the appearance of polar phases and ferroelectricity in HOIPs are discussed. Inorganic perovskite materials such as SrTiO3, BaTiO3, and Pb(Zr,Ti)O3 have been widely used in the past because of their excellent dielectric, ferroelectric, piezoelectric and pyroelectric properties used in numerous applications. Recently, hybrid organic- inorganic perovskites (HOIPs) have emerged as a promising class of materials for photovoltaic (and more generally optoelectronic) applications. With their help, photovoltaic solar cells have achieved large power conversion efficiencies, in excess of 20%, within a very short time due to unique combinations of materials parameters. On the other hand, many of these materials are polar and, thus, viable substitutes for classical inorganic perovskites. In this Review we describe the origin of polar properties in several classes of HOIPs (both single crystals and thin films), present a comprehensive account of their piezo-, ferro- and pyroelectric responses, and discuss their possible applications as capacitors, memory elements, piezoelectric transducers and pyroelectric sensors.
ISSN:0010-8545
1873-3840
DOI:10.1016/j.ccr.2019.02.012