Zero-dimensional (0-D) perovskites and perovskite-related materials are an emerging class of optoelectronic materials exhibiting strong excitonic properties and, quite often, high photoluminescence (PL) in the solid state. Here we highlight two different classes of 0-D perovskites with contrasting structural and optical properties, focusing mainly on the less explored but rapidly growing bulk quantum materials termed as 0-D perovskite-related materials (0-D PRMs), whose PL properties are quite intriguing and a topic of recent debate. We attempt to present here a comprehensive picture to rationalize the contrasting properties of the 0-D PRMs and provide an understanding of the mechanism of exciton dynamics and PL of this class of materials. We hope that exciting PL and tunable composition of these systems will help design of new materials with versatile optical properties suited for practical applications.

中文翻译：

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零维钙钛矿和钙钛矿相关材料的光致发光

零维（0-D）钙钛矿和钙钛矿相关材料是新兴的一类光电材料，其表现出强激子特性，并且经常在固态下表现出高光致发光（PL）。在这里，我们重点介绍两种具有不同结构和光学特性的0-D钙钛矿，主要集中于探索较少但发展迅速的体量子材料，这些材料被称为0-D钙钛矿相关材料（0-D PRM），其PL特性为非常有趣，是最近辩论的话题。我们试图在这里呈现一个全面的图片，以合理化0-D PRM的对比特性，并提供对此类材料的激子动力学和PL机理的理解。