PDF(Pubmed)
Abstract：
Light-emitting diodes (LEDs) are an indispensable part of our daily life. After being studied for a few decades, this field still has some room for improvement. In this regard, perovskite materials may take the leading role. In recent years, LEDs have become a most explored topic, owing to their various applications in photodetectors, solar cells, lasers, and so on. Noticeably, they exhibit significant characteristics in developing LEDs. The luminous efficiency of LEDs can be significantly enhanced by the combination of a poor illumination LED with low-dimensional perovskite. In 2014, the first perovskite-based LED was illuminated at room temperature. Furthermore, two-dimensional (2D) perovskites have enriched this field because of their optical and electronic properties and comparatively high stability in ambient conditions. Recent and relevant advancements in LEDs using low-dimensional perovskites including zero-dimensional to three-dimensional materials is reported. The major focus of this article is based on the 2D perovskites and their heterostructures (i.e., a combination of 2D perovskites with transition metal dichalcogenides, graphene, and hexagonal boron nitride). In comparison to 2D perovskites, heterostructures exhibit more potential for application in LEDs. State-of-the-art perovskite-based LEDs, current challenges, and prospects are also discussed.
摘要：
发光二极管（LED）是我们日常生活中不可或缺的一部分。经过几十年的研究，这个领域还有一些改进的空间。在这方面,钙钛矿材料可能起主导作用。近年来,LED已经成为一个最热门的话题，由于它们在光电探测器中的各种应用，太阳能电池,激光,等等。值得注意的是，它们在开发LED时表现出显著的特性。LED的发光效率可以通过低照度LED与低维钙钛矿的组合而显著提高。2014年，第一个基于钙钛矿的LED在室温下发光。此外，二维（2D）钙钛矿由于其光学和电子特性以及在环境条件下相对较高的稳定性而丰富了该领域。报道了使用包括零维到三维材料的低维钙钛矿的LED的最新和相关进展。本文的主要重点是基于2D钙钛矿及其异质结构(即，2D钙钛矿与过渡金属二硫属化合物的组合，石墨烯,石墨烯和六方氮化硼)。与2D钙钛矿相比，异质结构在LED中显示出更大的应用潜力。最先进的钙钛矿发光二极管，当前的挑战,并讨论了前景。
