Sol–gel-based single and multilayer nanoparticle thin films on low-temperature substrate poly-methyl methacrylate for optical applications

Islam, Shumaila; Bidin, Noriah; Haider, Zuhaib; Riaz, Saira; Naseem, Shahzad; Saeed, M. A.; Marsin, Faridah Mohd

doi:10.1007/s10971-015-3866-2

Cited by 12 publications

(4 citation statements)

References 20 publications

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“…Furthermore, nano scale geometries give a guarantee for the antireflective properties. Additionally, it was demonstrated that the homogeneous stable coatings with low reflectance (<2%) and controllable refractive index properties of this method make it feasible to obtain antireflective coating on plastic with optimal performance at low temperature [18]. Zhang et al [32] developed a novel nanocomposites coating with a closed-pore structure by a sol-gel dip-coating method, silica sol synthetized in acidic medium.…”

Section: Uv-vis Spectroscopymentioning

confidence: 99%

“…Wang et al [17] obtained superhydrophobic transparent film on a glass substrate by hydrolyzing the tetraethoxysilane (TEOS) in an acidic environment and then reacted with hexamethyldisilazane (HMDS). Islam et al [18] reported that nanoparticle optical coating of silica and titania on polymer substrate PMMA can be prepared via a sol-gel method, at room temperature. Ortelli et al [19] reported the preparation of organic-inorganic hybrid compositions (ceramers) through the sol-gel process, using different alkoxysilane precursors (trimethoxymethylsilane (TMEOS), (3-aminopropyl) trimethoxyalkoxysilane (APTMS) and tetraethoxysilane (TEOS)).…”

Section: Introductionmentioning

confidence: 99%

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Preparation and Characterization of Some Sol-Gel Modified Silica Coatings Deposited on Polyvinyl Chloride (PVC) Substrates

Purcar

Rădiţoiu

et al. 2020

Coatings

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Transparent and antireflective coatings were prepared by deposition of modified silica materials onto polyvinyl chloride (PVC) substrates. These materials were obtained by the sol-gel route in acidic medium, at room temperature (25 °C), using different alkoxysilanes with various functional groups (methyl, vinyl, octyl or hexadecyl). Physicochemical and microstructural properties of resulted silica materials and of thin coatings were investigated through Fourier Transforms Infrared Spectroscopy (FTIR), UV-Vis spectroscopy, Thermal Gravimetric Analysis (TGA), Dynamic Mechanical Analysis (DMA), Atomic Force Microscopy (AFM) and ellipsometric measurements. Wetting behaviors of the silica coatings were evaluated by measurement of static contact angle against water. FTIR spectra of materials confirmed the high degree of cross-linking that result from the formation of the inorganic backbone through the hydrolysis and polycondensation reactions together with the formation of the organic network. These sol-gel silica coatings showed a reduction in the reflectance (10%) compared with uncoated PVC substrate. AFM reveals that the films are uniform, and adherent to the substrate, but their morphology is strongly influenced by the chemical composition of the coating matrices. These silica coatings can be useful for potential electronic and optical devices.

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Section: Uv-vis Spectroscopymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Preparation and Characterization of Some Sol-Gel Modified Silica Coatings Deposited on Polyvinyl Chloride (PVC) Substrates

Purcar

Rădiţoiu

et al. 2020

Coatings

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“…Antireflective (AR) coatings are required to improve the light transmission in a wide variety of applications [1][2][3]. The principle of single-layer AR coatings is based on the destructive interference between the air-coating and the coating-substrate interfaces.…”

Section: Introductionmentioning

confidence: 99%

Sol–gel preparation of moisture-resistant antireflective coatings from novel hollow silica nanoparticles

Tao

Yan

Yuan

et al. 2016

J Sol-Gel Sci Technol

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In this study, a simple approach was developed to prepare hollow silica nanoparticles (HSNs) sols via a one-step base-catalyzed sol-gel process using methyltriethoxysilane and tetraethoxysilicate as co-precursors. The prepared sols were suitable for large-area processing with ease of antireflective (AR) coating and being directly applicable without requiring any pre-or post-treatment. AR coatings were dip coated on K9 glasses from these sols. Furthermore, AR coatings were intrinsically hydrophobic with static water contact angles up to 126.5°on the smooth K9 glass. A particle growth mechanism of the hybrid HSNs was proposed, and the relationship between the microstructure of HSNs and the properties of AR coatings was investigated. These AR coatings with relatively excellent AR properties and improved moisture resistance were useful in solar cells, low-cost electronics, and optical devices. Graphical Abstract

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“…Silica antireflective (AR) coatings have been widely used in optical devices and energy-related applications to reduce light reflection [1,2]. Sol-gel chemistry is one of the most interesting methods to produce AR coatings because it is versatile, cost-effective and easy to combine with liquid deposition techniques that permit an accurate control of the coating thickness [3].…”

Section: Introductionmentioning

confidence: 99%

Detailed analysis and formation mechanism of superhydrophobic antireflective coatings with adjustable refractive index from trimethylsilanized silica nanoparticles

Tao

Yan

Yuan

et al. 2016

J Sol-Gel Sci Technol

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This paper dealt with the fabrication of sol-gelderived organically modified silica (ormosil) films on glasses from trimethylsilanized silica nanoparticles (SNPs) using hexamethylisilazane (HMDS) as the modification agent. The prepared sols were suitable for large-area processing with ease of coating and being directly applicable without requiring any pre-or post-treatment. By a dipcoating process, these HMDS-treated sols gave antireflective (AR) coatings exhibiting precisely tunable refractive indices ranging from 1.19 to 1.12, in a range that is not accessible to nonporous inorganic materials. Films produced a fair AR effect consisting of more than a 6 % increase in optical transmittance. The particle surface modification with HMDS significantly improved the hydrophobicity of the coated film. According to the dynamic light scattering (DLS) method, the HMDS modification at the surface of the pure spherical SNPs enlarged the SNP size from 12.4 to 22.3 nm. The relationship between the microstructure of silica sols and the properties of films was investigated. Besides this, the effects of various factors on the morphology of sols and films were studied to propose a mechanism for the formation of the adjustable refractive index thin films. Graphical Abstract

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Sol–gel-based single and multilayer nanoparticle thin films on low-temperature substrate poly-methyl methacrylate for optical applications

Cited by 12 publications

References 20 publications

Preparation and Characterization of Some Sol-Gel Modified Silica Coatings Deposited on Polyvinyl Chloride (PVC) Substrates

Preparation and Characterization of Some Sol-Gel Modified Silica Coatings Deposited on Polyvinyl Chloride (PVC) Substrates

Sol–gel preparation of moisture-resistant antireflective coatings from novel hollow silica nanoparticles

Detailed analysis and formation mechanism of superhydrophobic antireflective coatings with adjustable refractive index from trimethylsilanized silica nanoparticles

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