Opt Lett. 2019 Jan 1;44(1):86-89. doi: 10.1364/OL.44.000086.
Structural colors with high color purity and low fabrication cost are highly desired in a wide variety of applications including displays, light emitting diodes, decorations, and optical detections. Here, we demonstrate a semitransparent pentalayer structure for creating angle-insensitive, high-purity reflective colors that exploit a higher-order cavity resonance. Moreover, the designed structure in a symmetric configuration presents bright and saturated colors from both directions with a high efficiency up to 85% and a high angular tolerance up to ±60°. The described scheme involves one deposition run, thereby providing a significant step toward large-area applications in various areas.
具有高色彩纯度和低成本制造的结构色在各种应用中都有很高的需求，包括显示器、发光二极管、装饰和光学检测。在这里，我们展示了一种半透明的五层层结构，用于创建利用高阶腔共振的角度不敏感、高纯度反射色。此外，对称结构的设计结构从两个方向呈现出明亮和饱和的颜色，效率高达 85%，角度容差高达±60°。所描述的方案涉及一次沉积运行，因此朝着在各个领域的大面积应用迈出了重要的一步。
