The renowned yellow phosphor yttrium aluminum garnet (YAG) doped with trivalent cerium has found its way into applications in many forms: as powder of micron sized crystals, as a ceramic, and even as a single crystal. However, additional technological advancement requires providing this material in new form factors, especially in terms of particle size. Where many materials have been developed on the nanoscale with excellent optical properties (e.g., semiconductor quantum dots, perovskite nanocrystals, and rare earth doped phosphors), it is surprising that the development of nanocrystalline YAG:Ce is not as mature as for these other materials. Control over size and shape is still in its infancy, and optical properties are not yet at the same level as other materials on the nanoscale, even though YAG:Ce microcrystalline materials exceed the performance of most other materials. This review highlights developments in synthesis methods and mechanisms and gives an overview of the state of the art morphologies, particle sizes, and optical properties of YAG:Ce on the nanoscale.

中文翻译：

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YAG：Ce ³⁺荧光粉：从用于一般照明的微米级主力灯到纳米级的光明前景

掺有三价铈的著名的黄色磷钇铝石榴石（YAG）现已以多种形式进入应用：微米级晶体粉末，陶瓷甚至单晶体。但是，额外的技术进步要求以新的形状系数提供这种材料，尤其是在粒度方面。在已经开发出许多具有出色光学性能的纳米级材料的情况下（例如，半导体量子点，钙钛矿纳米晶体和稀土掺杂的磷光体），令人惊讶的是，纳米晶YAG：Ce的开发还不如其他材料成熟。尺寸和形状的控制仍处于起步阶段，即使YAG，光学性能仍未达到纳米级其他材料的水平。铈微晶材料超越了大多数其他材料的性能。这篇综述重点介绍了合成方法和机理的发展，并概述了纳米级YAG：Ce的现有形态，粒度和光学性质。