Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 12, Issue 44, Pages 49957-49962Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c12465
Keywords
antireflective coating; optical coating; superhydrophobic; self-cleaning; atomic layer deposition; nanostructures
Funding
- Business Finland [NANOGRA 6615/31/2019]
- Academy of Finland [320187]
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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 CHF3. 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 grasslike alumina with 173 degrees advancing and 160 degrees 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.
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