Abstract Over the last decade, narrow-band emitters have been recognized as key enablers for light emitting diodes (LEDs) backlights in liquid-crystal displays (LCDs) by competing with other display technologies. Today, efforts have been devoted to the exploration of narrow-band green/red luminescent materials with high quantum efficiency and excellent stability to optimize the performance of LED backlights. This review first presents an overview of the significant progress made in the development of narrow-band emitters used in LED backlights for LCDs with the emphasis on the versatile materials databases from doped phosphors to luminescent II–VI, III-V semiconductor quantum dots, and the recent halide perovskites nanocrystals and bulk metal halides. Subsequently, the correlation of structure-luminescence properties, and the device performance optimization of these emitters have been analyzed. The focus is placed on summarizing and comparing the remarkable examples of outdated and new narrow-band luminescent materials as potential candidates in LED backlights. Finally, the outlooks and challenges in discovering new narrow-band emitters have been proposed.

中文翻译：

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用于液晶显示器的 LED 背光中的窄带发射器

摘要 在过去十年中，通过与其他显示技术竞争，窄带发射器已被公认为液晶显示器 (LCD) 中发光二极管 (LED) 背光的关键推动因素。如今，人们一直致力于探索具有高量子效率和优异稳定性的窄带绿/红发光材料，以优化 LED 背光源的性能。本综述首先概述了在 LCD 的 LED 背光中使用的窄带发射器的开发取得的重大进展，重点是从掺杂磷光体到发光 II-VI、III-V 半导体量子点的通用材料数据库，以及最近的卤化物钙钛矿纳米晶体和块状金属卤化物。随后，结构-发光特性的相关性，并对这些发射器的器件性能优化进行了分析。重点是总结和比较作为 LED 背光潜在候选材料的过时和新型窄带发光材料的显着例子。最后，提出了发现新窄带发射器的前景和挑战。