Department of Physics, University of Rajasthan, Jaipur 302055, India.
ACS Appl Mater Interfaces. 2013 Jun 12;5(11):4872-7. doi: 10.1021/am400612q. Epub 2013 May 28.
We report a design and fabrication strategy for creating an artificially stacked multilayered optical filters using a thermal evaporation technique. We have selectively chosen a zinc sulphide (ZnS) lattice for the high refractive index (n = 2.35) layer and a magnesium fluoride (MgF2) lattice as the low refractive index (n = 1.38) layer. Furthermore, the microstructures of the ZnS/MgF2 multilayer films are also investigated through TEM and HRTEM imaging. The fabricated filters consist of high and low refractive 7 and 13 alternating layers, which exhibit a reflectance of 89.60% and 99%, respectively. The optical microcavity achieved an average transmittance of 85.13% within the visible range. The obtained results suggest that these filters could be an exceptional choice for next-generation antireflection coatings, high-reflection mirrors, and polarized interference filters.
我们报告了一种使用热蒸发技术创建人工堆叠多层光学滤波器的设计和制造策略。我们选择了硫化锌（ZnS）晶格作为高折射率（n = 2.35）层，氟化镁（MgF2）晶格作为低折射率（n = 1.38）层。此外，还通过 TEM 和 HRTEM 成像研究了 ZnS/MgF2 多层膜的微结构。所制备的滤波器由高折射率和低折射率的 7 层和 13 层交替组成，分别表现出 89.60%和 99%的反射率。在可见光范围内，光学微腔的平均透过率达到了 85.13%。得到的结果表明，这些滤波器可能是下一代抗反射涂层、高反射镜和偏振干涉滤波器的绝佳选择。
