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A High-Temperature Antiferroelectric of Lead Iodide Hybrid Perovskites
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2019-07-31 , DOI: 10.1021/jacs.9b05124 Shiguo Han 1, 2 , Xitao Liu 1 , Yi Liu 1, 2 , Zhiyun Xu 1 , Yaobin Li 1 , Maochun Hong 1 , Junhua Luo 1 , Zhihua Sun 1
Journal of the American Chemical Society ( IF 14.4 ) Pub Date : 2019-07-31 , DOI: 10.1021/jacs.9b05124 Shiguo Han 1, 2 , Xitao Liu 1 , Yi Liu 1, 2 , Zhiyun Xu 1 , Yaobin Li 1 , Maochun Hong 1 , Junhua Luo 1 , Zhihua Sun 1
Affiliation
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Antiferroelectric, characterized by the natural polarization-electric field (P-E) double hysteresis loops, has been developed as a promising branch for energy storage. Here, we present the first antiferroelectric in the booming family of lead iodide hybrid perovskites, (BA)2(EA)2Pb3I10 (1, where BA = n-butylammonium and EA = ethylammonium), which exhibits one of the highest Curie temperatures (~363 K) for the majority of known molecular systems. Strikingly, its high-temperature antiferroelectricity, triggered by an antipolar alignment of adjacent dipoles, is convinced by the characteristic double P-E hysteresis loops, thus enabling remarkable energy storage efficiencies in the range of 65% ~83%. This merit is almost comparable to many inorganic counterparts, suggesting great potentials of 1 for energy storage. Another fascinating attribute is that 1 also acts as a room-temperature biaxial ferroelectric with spontaneous polarization of 5.6 μC∙cm-2. As far as we know, this study on the high-temperature antiferroelectric, along with room-temperature biaxial ferroelectricity, is unprecedented for the versatile lead-iodide hybrid perovskites, which sheds light on the design of new electric-ordered materials and facilitates their application of high-performance devices.
中文翻译：
碘化铅混合钙钛矿的高温反铁电体
以自然极化电场（PE）双磁滞回线为特征的反铁电体已被开发为有前途的储能分支。在这里，我们展示了蓬勃发展的碘化铅杂化钙钛矿家族中的第一个反铁电体，(BA)2(EA)2Pb3I10（1，其中 BA = 正丁基铵，EA = 乙基铵），它表现出最高居里温度之一（~ 363 K）用于大多数已知分子系统。引人注目的是，其由相邻偶极子的反极性排列触发的高温反铁电性被特征性的双 PE 磁滞回线所说服，从而实现了 65% ~ 83% 范围内的显着能量存储效率。这一优点几乎可与许多无机对应物相媲美，表明 1 具有巨大的储能潜力。另一个迷人的属性是 1 还充当自发极化为 5.6 μC∙cm-2 的室温双轴铁电体。据我们所知，这项关于高温反铁电以及室温双轴铁电的研究对于多功能碘化铅杂化钙钛矿来说是前所未有的，它为新型电有序材料的设计提供了思路并促进了它们的应用的高性能设备。
更新日期：2019-07-31
中文翻译：
碘化铅混合钙钛矿的高温反铁电体
以自然极化电场（PE）双磁滞回线为特征的反铁电体已被开发为有前途的储能分支。在这里，我们展示了蓬勃发展的碘化铅杂化钙钛矿家族中的第一个反铁电体，(BA)2(EA)2Pb3I10（1，其中 BA = 正丁基铵，EA = 乙基铵），它表现出最高居里温度之一（~ 363 K）用于大多数已知分子系统。引人注目的是，其由相邻偶极子的反极性排列触发的高温反铁电性被特征性的双 PE 磁滞回线所说服，从而实现了 65% ~ 83% 范围内的显着能量存储效率。这一优点几乎可与许多无机对应物相媲美，表明 1 具有巨大的储能潜力。另一个迷人的属性是 1 还充当自发极化为 5.6 μC∙cm-2 的室温双轴铁电体。据我们所知，这项关于高温反铁电以及室温双轴铁电的研究对于多功能碘化铅杂化钙钛矿来说是前所未有的，它为新型电有序材料的设计提供了思路并促进了它们的应用的高性能设备。
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