The Emergence of Halide Layered Double Perovskites,ACS Energy Letters

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The Emergence of Halide Layered Double Perovskites
ACS Energy Letters ( IF 19.3 ) Pub Date : 2020-10-29 , DOI: 10.1021/acsenergylett.0c01867
Brenda Vargas ₁ , Germán Rodrı́guez-López ₁ , Diego Solis-Ibarra ₁

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Halide double perovskites have allowed the significant expansion of the possible metals and oxidation states in halide perovskites. Further, they have shown some remarkable properties and applications. Akin to the dimensional reduction in halide perovskites to generate layered perovskites, it has recently been shown that it is also possible to dimensionally reduce double perovskites to generate layered double perovskites (LDPs). The implications of such realization are tremendous from several different perspectives. First, it widens the space of possible metals, as LDPs can be made of B^I, B^II, and B^III cations and their permutations. Second, it allows the modulation of the materials’ electronic structure through dimensional reduction and quantum confinement effects. Third, it allows the incorporation of many more organic cations, thereby providing a more chemically, structurally, and electronically diverse pool of materials. The combinations of these three factors result in a potentially infinite family of new materials with new or improved properties and applications. Herein, we describe the emergence of this new family and the known chemical, structural, and electronic features and review their proved and potential applications. Finally, we highlight some of the challenges and propose some future avenues of research and areas of opportunity for these materials.

中文翻译：

卤化物层状双层钙钛矿的出现

卤化物双钙钛矿使卤化物钙钛矿中可能的金属和氧化态显着扩展。此外，它们显示出一些非凡的性能和应用。类似于卤化物钙钛矿的尺寸减小以生成层状钙钛矿，最近已显示，还可以在尺寸上还原双钙钛矿以生成层状双钙钛矿（LDPs）。从几个不同的角度来看，这种实现的意义是巨大的。首先，由于LDP可以由B ^I，B ^II和B ^III制成，因此它拓宽了可能的金属空间。阳离子及其排列。其次，它允许通过尺寸缩减和量子限制效应来调节材料的电子结构。第三，它允许引入更多的有机阳离子，从而提供了化学，结构和电子方面更多样化的材料库。这三个因素的组合会导致具有新特性或改进的特性和应用的潜在无限的新材料系列。在这里，我们描述了这个新家族的出现以及已知的化学，结构和电子特征，并回顾了它们已被证明和潜在的应用。最后，我们重点介绍了一些挑战，并提出了这些材料的未来研究途径和机会领域。

更新日期：2020-11-13

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