Department of Physical Science and Technology, Central China Normal University, Wuhan 430079, China.
Oxford Suzhou Centre for Advanced Research (OSCAR), University of Oxford, Suzhou 215123, China.
Molecules. 2023 Feb 24;28(5):2145. doi: 10.3390/molecules28052145.
In recent years, organic/inorganic hybrid materials have attracted much attention in the field of multilayer antireflection films because of their excellent optical properties. In this paper, the organic/inorganic nanocomposite was prepared from polyvinyl alcohol (PVA) and titanium (IV) isopropoxide (TTIP). The hybrid material has a wide, tunable window of refractive index, i.e., 1.65-1.95, at a wavelength of 550 nm. The atomic force microscope (AFM) results of the hybrid films show the lowest root-mean-square surface roughness of 2.7 Å and a low haze of 0.23%, indicating that the films have good potential for optical applications. The double-sided antireflection films (10 × 10 cm) with one side of hybrid nanocomposite/cellulose acetate and the other side of hybrid nanocomposite /polymethyl methacrylate (PMMA) achieved high transmittances of 98% and 99.3%, respectively. After 240 days of aging testing, the hybrid solution and the antireflective film remained stable with almost no attenuation. Furthermore, the application of the antireflection films in perovskite solar cell modules increased the power conversion efficiency from 16.57% to 17.25%.
近年来，由于具有优异的光学性能，有机/无机杂化材料在多层减反射膜领域引起了广泛关注。本文采用聚乙烯醇（PVA）和钛（IV）异丙醇盐（TTIP）制备了有机/无机纳米复合材料。该杂化材料在 550nm 波长处的折射率可调范围较宽，为 1.65-1.95。杂化膜的原子力显微镜（AFM）结果表明，其表面均方根粗糙度最低为 2.7Å，雾度值低至 0.23%，表明该膜在光学应用方面具有良好的应用潜力。一侧为杂化纳米复合材料/醋酸纤维素，另一侧为杂化纳米复合材料/聚甲基丙烯酸甲酯（PMMA）的双面减反射膜（10×10cm）分别实现了 98%和 99.3%的高光透过率。经过 240 天的老化测试，杂化溶液和减反射膜保持稳定，几乎没有衰减。此外，将减反射膜应用于钙钛矿太阳能电池模块中，将功率转换效率从 16.57%提高到了 17.25%。
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