防反射涂料
材料科学
纳米孔
共聚物
多孔性
光泽度(光学)
化学工程
溶胶凝胶
纳米技术
光催化
高折射率聚合物
薄膜
折射率
光电子学
聚合物
复合材料
涂层
催化作用
有机化学
工程类
化学
作者
Stefan Guldin,Peter Kohn,Morgan Stefik,Jung-Hwan Song,Giorgio Divitini,Fanny Ecarla,Caterina Ducati,Ulrich Wiesner,Ullrich Steiner
出处
期刊:Nano Letters
[American Chemical Society]
日期:2013-10-18
卷期号:13 (11): 5329-5335
被引量:154
摘要
Low-cost antireflection coatings (ARCs) on large optical surfaces are an ingredient-technology for high-performance solar cells. While nanoporous thin films that meet the zero-reflectance conditions on transparent substrates can be cheaply manufactured, their suitability for outdoor applications is limited by the lack of robustness and cleanability. Here, we present a simple method for the manufacture of robust self-cleaning ARCs. Our strategy relies on the self-assembly of a block-copolymer in combination with silica-based sol–gel chemistry and preformed TiO2 nanocrystals. The spontaneous dense packing of copolymer micelles followed by a condensation reaction results in an inverse opal-type silica morphology that is loaded with TiO2 photocatalytic hot-spots. The very low volume fraction of the inorganic network allows the optimization of the antireflecting properties of the porous ARC despite the high refractive index of the embedded photocatalytic TiO2 nanocrystals. The resulting ARCs combine high optical and self-cleaning performance and can be deposited onto flexible plastic substrates.
科研通智能强力驱动
Strongly Powered by AbleSci AI