Enhancement of self-cleaning properties and durability of super-hydrophobic carbon nitride nanostructures by post-annealing treatment

Kamal, Shafarina Azlinda Ahmad; Ritikos, Richard; Rahman, Saadah Abdul

doi:10.1016/j.surfcoat.2021.126912

Cited by 5 publications

(2 citation statements)

References 36 publications

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“…Recent research reported that the CNx film surface has hydrophobicity or even superhydrophobic characteristics. The wetting of the CNx thin films is sensitive to the sp 2 and sp 3 fractions in the structure as have been reported previously 75 , 76 . Reports indicate that films with high sp 2 clusters exhibit higher WCA than films with higher sp 3 clusters.…”

Section: Experiments and Data Analysissupporting

confidence: 74%

Amorphous carbon nitride dual-function anti-reflection coating for crystalline silicon solar cells

Addie

Ismail

Mohammed

2022

Sci Rep

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Crystalline silicon (c-Si) solar cells have dominated the photovoltaic industry for decades. However, due to high reflectivity and the presence of numerous types of surface contaminants, the solar cell only absorbs a limited amount of the incident solar radiation. To improve the efficiency of the solar cell, anti-reflection and self-cleaning coatings must be applied to the surface. The main objective of this work is to synthesize an amorphous carbon nitride CNx thin film as a novel dual-function anti-reflection coating (ARC) for c-Si solar cells. The CNx film was synthesized by the RF magnetron sputtering technique and characterized by different chemical, structural, and optical analysis techniques. The performance of CNx film was investigated via measuring the reflectance, photoelectric conversion efficiency, and external quantum efficiency. The minimum reflectance was 0.3% at 550 nm wavelength, and the external quantum efficiency achieved was more than 90% within the broad wavelength range. The open circuit voltage and short circuit current density that have been achieved are 578 mV and 33.85 mAcm−2, respectively. Finally, a photoelectric conversion efficiency of 13.05% was achieved with the coated c-Si solar cell in comparison with 5.52% for the uncoated c-Si solar cell. This study shows that CNx films have promising application potential as an efficient ARC for c-Si solar cells as compared to traditional ARC materials.

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Section: Experiments and Data Analysissupporting

confidence: 74%

Amorphous carbon nitride dual-function anti-reflection coating for crystalline silicon solar cells

Addie

Ismail

Mohammed

2022

Sci Rep

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“…Prevention of the icing of aircraft, power lines, and wind turbines by modifying such surfaces is an urgent task [128,197]. Traditional de-icing methods (such as mechanical de-icing, surface heating, de-icing fluids) are inefficient and labor-and energy-intensive.…”

Section: Possible Applications Of Modified Surfacesmentioning

confidence: 99%

Hydrophilic and Hydrophobic Surfaces: Features of Interaction with Liquid Drops

Antonov,

Islamova,

Strizhak

2023

Materials

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The processes of interaction of liquid droplets with solid surfaces have become of interest to many researchers. The achievements of world science should be used for the development of technologies for spray cooling, metal hardening, inkjet printing, anti-icing surfaces, fire extinguishing, fuel spraying, etc. Collisions of drops with surfaces significantly affect the conditions and characteristics of heat transfer. One of the main areas of research into the interaction of drops with solid surfaces is the modification of the latter. Changes in the hydrophilic and hydrophobic properties of surfaces give the materials various functional properties—increased heat transfer, resistance to corrosion and biofouling, anti-icing, etc. This review paper describes methods for obtaining hydrophilic and hydrophobic surfaces. The features of the interaction of liquid droplets with such surfaces are considered. The existing and possible applications of modified surfaces are discussed, as well as topical areas of research.

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Large-scale fabrication of decoupling coatings with promising robustness and superhydrophobicity for antifouling, drag reduction, and organic photodegradation

Xin

Gao

et al. 2023

Friction

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It is still a challenge to achieve large-area preparation of robust superhydrophobic surfaces with strong mechanical stability. Here, a simple and low-cost method to prepare robust decoupling superhydrophobic coatings on aluminum (Al) alloys substrate has been presented. The superhydrophobicity and robustness of decoupling coatings are realized by structuring surfaces at two different length scales, with nanostructures for superhydrophobicity and microstructures for robustness. This prepared decoupling coating shows promising superhydrophobicity, with water contact angle (CA) of ∼158.4° and roll off angle (RA) of ∼3°. It also exhibits high repellency for impacting water droplets. Notably, the decoupling coating processes outstanding adhesion strength on the substrate after tape-peeling and cross-cut tests, also with promising wear resistantance after sandpaper abrasion and wear test. The friction coefficient of this decoupling coating is only ∼0.2. In addition, the robust decoupling superhydrophobic coating is applied to underwater buoyancy enhancement and fluid resistance reduction (drag reduction rate ∼30.09%). This decoupling superhydrophobic coating also displays promising self-cleaning and antifouling properties. Moreover, benefitting from the photocatalytic property of TiO2, this decoupling coating is also exploited for degrading organics to achieve seawater purification. This obtained decoupling superhydrophobic coating is expected to apply on other solids in marine fields, and the simple and eco-friendly method develops the potential practical application.

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Enhancement of self-cleaning properties and durability of super-hydrophobic carbon nitride nanostructures by post-annealing treatment

Cited by 5 publications

References 36 publications

Amorphous carbon nitride dual-function anti-reflection coating for crystalline silicon solar cells

Amorphous carbon nitride dual-function anti-reflection coating for crystalline silicon solar cells

Hydrophilic and Hydrophobic Surfaces: Features of Interaction with Liquid Drops

Large-scale fabrication of decoupling coatings with promising robustness and superhydrophobicity for antifouling, drag reduction, and organic photodegradation

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