Isakov Kirill, Kauppinen Christoffer, Franssila Sami, Lipsanen Harri
Department of Electronics and Nanoengineering, Aalto University, Tietotie 3, FI-02150 Espoo, Finland.
Department of Chemistry and Materials Science and Micronova Nanofabrication Centre, Aalto University, Tietotie 3, FI-02150 Espoo, Finland.
ACS Appl Mater Interfaces. 2020 Nov 4;12(44):49957-49962. doi: 10.1021/acsami.0c12465. Epub 2020 Oct 21.
This work presents a superhydrophobic antireflective (AR) coating on glass. The coating consists of a grass-like alumina layer capped with plasma-deposited fluoropolymer. The grass-like alumina is formed by hot water treatment of atomic layer-deposited alumina on glass, and the fluoropolymer is plasma-deposited from CHF. Excellent broadband AR performance is observed in the visible spectrum with an average transmission of 94.9% for single-sided coated glass, which is close to the maximum 95.3% possible for this glass. Extremely desirable contact angles are obtained with 5-7 min-long fluoropolymer treatments on grass-like alumina with 173° advancing and 160° receding contact angles. This type of multifunctional coating can be beneficial in a multitude of applications like self-cleaning AR coating for solar panels, windows in high-rise buildings, sensors, and aerospace applications as well as just utilizing the excellent water repellent behavior in applications where only superhydrophobicity is required.
这项工作展示了一种在玻璃上的超疏水抗反射（AR）涂层。该涂层由覆盖有等离子体沉积含氟聚合物的草状氧化铝层组成。草状氧化铝是通过对玻璃上原子层沉积的氧化铝进行热水处理形成的，含氟聚合物则由CHF等离子体沉积而成。在可见光谱中观察到了优异的宽带抗反射性能，单面涂层玻璃的平均透过率为94.9%，接近该玻璃可能达到的最大值95.3%。通过在草状氧化铝上进行5 - 7分钟的含氟聚合物处理，获得了极其理想的接触角，前进接触角为173°，后退接触角为160°。这种多功能涂层在众多应用中可能会很有用，比如用于太阳能板的自清洁抗反射涂层、高层建筑的窗户、传感器和航空航天应用，以及在仅需要超疏水性的应用中利用其优异的拒水性能。
