Abstract This article puts emphasis on the role of phosphors in the advancement of Light-emitting diodes (LEDs). The increasing use of phosphors in LEDs, consequently, led to the nomenclature of phosphor-converted LEDs (pc-LEDs). This article makes a thorough discussion about the various methods employed for the synthesis of phosphors and the materials involved in the fabrication of pc-LEDs. A review on the various color-emitting phosphors has been exclusively made to understand the combinations of host materials with luminescent ion dopants that are essential to produce a specific color-emission of interest. There is a brief outlook on the various characteristics and indexes associated with the color quality and performance of pc-LEDs. The challenges faced by pc-LEDs and the advances made to overcome them have also been discussed. On the parallel, other variants of LEDs have started to show up with more promising features than pc-LEDs; but those are yet to accomplish a place in the LED industry due to the lackluster observed in their stability and lifetime. This article will brief the records on such new variants of LEDs assuming that these issues will be resolved in the near future and establish them as the next-generation of LEDs.

中文翻译：

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磷光体转换发光二极管 (pc-LED) 进展综述：磷光体合成、器件制造和表征

摘要 本文重点介绍荧光粉在发光二极管 (LED) 发展中的作用。因此，越来越多地在 LED 中使用磷光体导致了磷光体转换 LED (pc-LED) 的命名。本文详细讨论了用于合成荧光粉的各种方法以及制造 pc-LED 所涉及的材料。对各种彩色发光磷光体进行了专门的审查，以了解主体材料与发光离子掺杂剂的组合，这对于产生感兴趣的特定颜色发射是必不可少的。简要介绍了与 pc-LED 的颜色质量和性能相关的各种特性和指标。还讨论了 pc-LED 面临的挑战以及为克服这些挑战而取得的进展。在平行线上，其他 LED 变体已经开始出现比 pc-LED 更有前景的特性；但由于在稳定性和寿命方面观察到的乏善可陈，这些尚未在 LED 行业中占据一席之地。本文将简要介绍这些新型 LED 的记录，假设这些问题将在不久的将来得到解决，并将它们确立为下一代 LED。