Abstract Phosphor layers are of vital importance for the development of advanced phosphor-converted light-emitting diodes (LEDs). However, owing to the fixed ratio of red-green-blue (RGB) phosphors, it has been difficult for the RGB phosphor layers with conventional structure to tune light emission colours. Herein, we have experimentally fabricated nine types of phosphor layers with patterned RGB pixel array, which consist of tuneable RGB ratio in a planar configuration. Moreover, we carried out optical simulation based on Monte-Carlo theory to assist in adjusting the light-emission colours and the corresponding chromaticity coordinates. The simulations were further verified by the experimental results via samples fabricated by the stencil printing technique. In accordance with the nine types of phosphor layers with patterned pixel arrays in various RGB ratios, we have finally obtained corresponding nine light-emission colours for the applications of LED light emission decoration. These designed advanced pixel-array phosphor layers demonstrate great potential for applications in decorated light emission and display devices with significant implications for industrial improvement in these research areas.

中文翻译：

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LED中基于像素阵列荧光粉层的多色发光

摘要 磷光体层对于先进的磷光体转换发光二极管 (LED) 的发展至关重要。然而，由于红绿蓝(RGB)荧光粉的固定比例，传统结构的RGB荧光粉层难以调节发光颜色。在此，我们通过实验制造了九种具有图案化 RGB 像素阵列的磷光体层，其由平面配置中的可调 RGB 比率组成。此外，我们进行了基于蒙特卡罗理论的光学模拟，以协助调整发光颜色和相应的色度坐标。通过模板印刷技术制造的样品的实验结果进一步验证了模拟。根据具有不同RGB比例的图案化像素阵列的九种荧光粉层，我们最终得到了对应的九种发光颜色，用于LED发光装饰的应用。 .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 这些设计的先进像素阵列磷光体层在装饰光发射和显示设备中具有巨大的应用潜力，对这些研究领域的工业改进具有重要意义。