论文标题
利用卤化物钙壶中的低能结构热力学
Leveraging Low-Energy Structural Thermodynamics in Halide Perovskites
论文作者
论文摘要
金属卤化物钙钛矿（MHP）将非凡的光电特性与在半导体对应物中未发现的化学和机械性能相结合。例如，它们表现出与单晶型砷化甲苯固体相同的光电特性，但表现出接近零的形成能。 MHP的小晶格能量意味着它们在标准条件附近经历了类似于有机材料的标准条件附近的多种多态性。 MHP还显示出与最先进的电池电极一样高的离子传输。金属卤化物钙钛矿（例如光伏和固态照明）的最广泛应用通常是将低的地层能量，多态性和高离子转运视为应消除的滋扰。在这里，我们通过将这些属性与其他技术相关的半导体进行比较，以强调该属性的独特性在半导体中的独特性，并说明在新兴应用中利用这些属性的方法。
Metal halide perovskites (MHPs) combine extraordinary optoelectronic properties with chemical and mechanical properties not found in their semiconductor counterparts. For instance, they exhibit optoelectronic properties on par with single-crystalline gallium arsenide yet exhibit near-zero formation energies. The small lattice energy of MHPs means they undergo a rich diversity of polymorphism near standard conditions similar to organic materials. MHPs also demonstrate ionic transport as high as state-of-the-art battery electrodes. The most widespread applications for metal halide perovskites (e.g. photovoltaics and solid-state lighting) typically view low formation energies, polymorphism, and high ion transport as a nuisance that should be eliminated. Here, we put these properties into perspective by comparing them to other technologically relevant semiconductors in order to highlight how unique this combination of properties is for semiconductors and to illustrate ways to leverage these properties in emerging applications.
