Fabrication of controllable wettability of crystalline silicon surfaces by laser surface texturing and silanization

Yang, Chengjuan; Jing, Xiubing; Wang, Fujun; Ehmann, Kornel F.; Tian, Yanling; Pu, Zihao

doi:10.1016/j.apsusc.2019.143805

Cited by 28 publications

(11 citation statements)

References 39 publications

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“…However, this research only demonstrated that the received super-hydrophobic coating could maintain excellent stability within 100 h, but the corresponding anticorrosion mechanism was absent. Besides, Yang et al investigated the stability of fluorinated super-hydrophobic silicon surfaces in alkaline solution, and the results clearly showed that after half hour, the alkaline-corroded samples were seriously damaged, losing super-hydrophobic property [28]. On the contrary, Pu et al reported that the Ti-6Al-4V substrates with fluorinated super-hydrophobic coating still exhibited robust super-hydrophobicity after immersion into alkaline solution for several hours [29].…”

Section: Introductionmentioning

confidence: 99%

Stability Mechanism of Laser-induced Fluorinated Super-hydrophobic Coating in Alkaline Solution

Tian

Yang

2021

J Bionic Eng

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Great attention has been focused on super-hydrophobic surfaces due to their fantastic applications. Fluoride chemicals are widely used to fabricate super-hydrophobic surfaces due to their convenience, simplicity, and high efficiency. Previous research has made extensively efforts on corrosion resistance of fluorinated super-hydrophobic surfaces in corrosive media. Nevertheless, rare papers focused on the underlying reasons of anticorrosion property and stability mechanism on the fluorinated super-hydrophobic coatings in alkaline solution. Therefore, this work aims to reveal these mechanisms of fluorinated super-hydrophobic copper samples in strong alkaline solution (pH 13). Through the characterization of surface wettability and surface morphology, the laser-induced super-hydrophobic surface retained excellent stability after soaking in alkaline solution for 4 h. Through measurement of chemical compositions, the anticorrosion mechanism and stability mechanism of the fluorinated super-hydrophobic surface were proposed. Importantly, the hydroxyl ion (OH−) can further promote the hydrolysis reaction to improve the density and bonding strength of the fluoride molecules. Finally, the electrochemical experiments (PDP and EIS tests) were conducted to validate the rationality of our proposed conclusions.

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Section: Introductionmentioning

confidence: 99%

Stability Mechanism of Laser-induced Fluorinated Super-hydrophobic Coating in Alkaline Solution

Tian

Yang

2021

J Bionic Eng

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“…Silicon, one of the most abundant materials on earth, is one of the most promising materials for solar cells in the current semiconductor industry. − Additionally, the textured silicon substrate is well known for its low cost, high current efficiency, stable thermal properties, and excellent biocompatibility. ,− Therefore, it is a promising candidate for devices in optoelectronics, − photovoltaics, ,− and biomimetic superhydrophobicity. − Scientists have been working on the fabrication of textured silicon since the 1900s. For example, the pyramidal structure can improve the efficiency of photovoltaic cells since it can collect reflected light and trap the light inside the structure by multiple internal reflections. ,− …”

Section: Introductionmentioning

confidence: 99%

Structural and Optical Properties of Textured Silicon Substrates by Three-Step Chemical Etching

Lin

Hsueh

2021

Langmuir

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We implemented the fabrication of hybrid structures, including pyramids, etching holes, and inverted pyramidal cavities on silicon substrates, by three-step chemical etching. To achieve this, we utilized anisotropic wet etching as the first-step etching to form pyramids of various sizes. Subsequently, metal-assisted chemical etching was performed to develop aligned etching holes on the pyramidal structure. Ultimately, anisotropic wet etching was used again as the third-step etching for the etchant to penetrate holes to form inverted pyramidal cavities. Optimizing the three-step etching treatments, large-scale textured structures with low reflectance could be obtained, and they show potential for applications in sensors, solar cells, photovoltaics, and surfaceenhanced Raman scattering (SERS). Examples of using the textured silicon substrates for SERS applications were given.

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“…Silicon is one of the most abundant materials on Earth and has the characteristics of good chemical stability, no environmental pollution, easy doping, and easy purification [1][2][3][4][5]. It has been widely used in the semiconductor industry.…”

Section: Introductionmentioning

confidence: 99%

Ultra-Low-Reflective, Self-Cleaning Surface by Fabrication Dual-Scale Hierarchical Optical Structures on Silicon

Duan

Zhang

et al. 2021

Coatings

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An integrated functional anti-reflective surface is of great significance for optical and optoelectronic devices. Hence, its preparation has attracted great attention from many researchers. This study combined wet alkaline etching approaches and reactive ion etching (RIE) techniques to create a dual-scale hierarchical anti-reflective surface on silicon substrates. The effect of RIE time on surface morphology and optical performance was investigated using multiple characterization forms. The optimal parameters for the fabrication of dual-scale structures by the composite etching process were explored. The silicon surface with a dual-scale structure indicated excellent anti-reflective properties (minimum reflectivity of 0.9%) in the 300 to 1100 nm wavelength range. In addition, the ultra-low reflection characteristic of the surface remained prominent at incident light angles up to 60°. The simulated spectra using the finite difference time domain (FDTD) method agreed with the experimental results. Superhydrophobicity and self-cleaning were also attractive properties of the surface. The functionally integrated surface enables silicon devices to have broad application prospects in solar cells, light emitting diodes (LEDs), photoelectric detectors, and outdoor equipment.

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Fabrication of controllable wettability of crystalline silicon surfaces by laser surface texturing and silanization

Cited by 28 publications

References 39 publications

Stability Mechanism of Laser-induced Fluorinated Super-hydrophobic Coating in Alkaline Solution

Stability Mechanism of Laser-induced Fluorinated Super-hydrophobic Coating in Alkaline Solution

Structural and Optical Properties of Textured Silicon Substrates by Three-Step Chemical Etching

Ultra-Low-Reflective, Self-Cleaning Surface by Fabrication Dual-Scale Hierarchical Optical Structures on Silicon

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