Ko Han-San, Kang Misun, Lee Jong-Tak, Bae Jae Young
Department of Chemistry, Keimyung University, Daegu 42601, Republic of Korea.
Micromachines (Basel). 2024 Jul 8;15(7):892. doi: 10.3390/mi15070892.
Currently, coating with anti-reflective materials is an attractive approach to improve the quality of screen-based displays. In this study, mesoporous silica particles were systematically synthesized as a function of surfactant (i.e., CTAC-cetyltrimethylammonium chloride) concentration to serve as main coating fillers possessing low refractive indices. Precisely changing the amount of the CTAC surfactant, silica sol with an average diameter of 50 nm exhibits distinctively different specific surface areas, pore size, and pore volume. Prior to the preparation of final coating solutions containing these silica particle fillers, the percentage of solid content was optimized on a glass slide. The use of 50 wt% solid content exhibited the highest transmittance of light. Among various content levels of silica sol, the use of 3.5 wt% of silica particles in the solid content displayed the highest transmittance (i.e., best anti-reflectiveness). Under the almost identical coating layers prepared with the fixed amount of silica particles possessing different surface areas, pore size, and pore volume, it appears that the largest pore volume played the most important role in improving the anti-reflective properties. Experimentally understanding the key feature of low-refractive filler materials under the optimized conditions could provide a clear view to develop highly effective anti-reflective materials for various display applications.
目前，用抗反射材料进行涂层处理是提高基于屏幕的显示器质量的一种有吸引力的方法。在本研究中，系统地合成了介孔二氧化硅颗粒，其作为表面活性剂（即十六烷基三甲基氯化铵，CTAC）浓度的函数，用作具有低折射率的主要涂层填料。精确改变CTAC表面活性剂的用量，平均直径为50nm的硅溶胶表现出明显不同的比表面积、孔径和孔体积。在制备含有这些二氧化硅颗粒填料的最终涂层溶液之前，在载玻片上优化了固含量的百分比。使用50wt%的固含量表现出最高的透光率。在硅溶胶的各种含量水平中，在固含量中使用占3.5wt%的二氧化硅颗粒表现出最高的透光率（即最佳抗反射性）。在用具有不同表面积、孔径和孔体积的固定量二氧化硅颗粒制备的几乎相同的涂层下，似乎最大的孔体积在改善抗反射性能方面起了最重要的作用。通过实验了解在优化条件下低折射率填料材料的关键特性，可以为开发用于各种显示应用的高效抗反射材料提供清晰的思路。
