Antireflection Enhancement by Composite Nanoporous Zeolite 3A–Carbon Thin Film

Stetsenko, M. O.; Pullano, Salvatore A.; Margitych, T.O.; Максименко, Л. С.; Hassan, Ali; Kryvyi, Serhii; Hu, Rui; Huang, Chün; Ziniuk, Roman; Golovynskyi, Sergii; Babichuk, I.S.; Li, Βaikui; Qu, Junle; Fiorillo, Antonino S.

doi:10.3390/nano9111641

Cited by 13 publications

(10 citation statements)

References 57 publications

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“…The parameter ρ is a Q-component [42] that characterizes amplitude anisotropy of the interaction with light. The registered signal is the polarization difference ρ(λ) = R s −R p [42][43][44]. R s and R p are the spectra of reflectance for s-polarized and p-polarized light, respectively.…”

Section: Methodsmentioning

confidence: 99%

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Gold Nanoparticle Self-Aggregation on Surface with 1,6-Hexanedithiol Functionalization

et al. 2020

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Here we study the morphology and the optical properties of assemblies made of small (17 nm) gold nanoparticles (AuNPs) directly on silicon wafers coated with (3-aminopropyl)trimethoxysilane (APTES). We employed aliphatic 1,6-hexanedithiol (HDT) molecules to cross-link AuNPs during a two-stage precipitation procedure. The first immersion of the wafer in AuNP colloidal solution led mainly to the attachment of single particles with few inclusions of dimers and small aggregates. After the functionalization of precipitated NPs with HDT and after the second immersion in the colloidal solution of AuNP, we detected a sharp rise in the number of aggregates compared to single AuNPs and their dimers. The lateral size of the aggregates was about 100 nm, while some of them were larger than 1μm. We propose that the uncompensated dipole moment of the small aggregates appeared after the first precipitation and acts further as the driving force accelerating their further growth on the surface during the second precipitation. By having such inhomogeneous surface coating, the X-ray reciprocal space maps and modulation polarimetry showed well-distinguished signals from the single AuNPs and their dimers. From these observations, we concluded that the contribution from aggregated AuNPs does not hamper the detection and investigation of plasmonic effects for AuNP dimers. Meantime, using unpolarized and polarized light spectroscopy, the difference in the optical signals between the dimers, being formed because of self-aggregation and the one being cross-linked by means of HDT, was not detected.

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Section: Methodsmentioning

confidence: 99%

“…polarization difference ρ(λ) = Rs-Rp [42][43][44]. Rs and Rp are the spectra of reflectance for s-polarized and p-polarized light, respectively.…”

Section: Morphology Characterizationmentioning

confidence: 99%

Gold Nanoparticle Self-Aggregation on Surface with 1,6-Hexanedithiol Functionalization

et al. 2020

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“…Nanoporous materials were recently investigated as anti-reflective coatings because of the correlation between the refractive index and the porosity, improving light transmission. The availability of materials with a low refractive index is limited, therefore porous materials are used to lower and obtain the required refractive index by controlling the density of the material [ 38 , 39 , 40 ]. Zeolite constitutes a family of mineral aluminum-silicates, structurally different from normal silicates or aluminates and widely used in ion exchange applications and molecular sieves.…”

Section: Introductionmentioning

confidence: 99%

Anti-Reflective Zeolite Coating for Implantable Bioelectronic Devices

et al. 2022

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Since sunlight is one of the most easily available and clean energy supplies, solar cell development and the improvement of its conversion efficiency represent a highly interesting topic. Superficial light reflection is one of the limiting factors of the photovoltaic cells (PV) efficiency. To this end, interfacial layer with anti-reflective properties reduces this phenomenon, improving the energy potentially available for transduction. Nanoporous materials, because of the correlation between the refractive index and the porosity, allow low reflection, improving light transmission through the coating. In this work, anti-reflective coatings (ARCs) deposited on commercial PV cells, which were fabricated using two different Linde Type A (LTA) zeolites (type 3A and 4A), have been investigated. The proposed technique allows an easier deposition of a zeolite-based mixture, avoiding the use of chemicals and elevated temperature calcination processes. Results using radiation in the range 470–610 nm evidenced substantial enhancement of the fill factor, with maximum achieved values of over 40%. At 590 and 610 nm, which are the most interesting bands for implantable devices, FF is improved, with a maximum of 22% and 10%, respectively. ARCs differences are mostly related to the morphology of the zeolite powder used, which resulted in thicker and rougher coatings using zeolite 3A. The proposed approach allows a simple and reliable deposition technique, which can be of interest for implantable medical devices.

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“…Zeolite is a type of microporous material consisting of TO 4 (T = Al, Si), which can be loaded with functional materials. Previously, 3A zeolites have been incorporated into composite films and showed excellent broadband anti-reflection over the visible–near-infrared wavelength range [ 12 , 13 ]. Moreover, the nanoparticle-loaded 4A-zeolite was used to prepare the PVA/gelatin films, which may be used as an environmentally friendly alternative to plastic packaging materials in the food industries [ 14 ].…”

Section: Introductionmentioning

confidence: 99%

Emulating Solar Spectral Reflectance of Natural Leaf with Bionic Leaf Prepared from 4A Zeolite-Derived Ultramarine Green Pigment

Xie

et al. 2021

Materials

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The emulation of the reflectance of green leaf in the solar spectral band (300–2500 nm) has garnered increasing attention from researchers. Currently, various materials have been proposed and investigated as potential bionic leaves. However, the problems such as poor weather durability, heavy metal pollution, and complex preparation technology still persist. Herein, a bionic leaf is prepared from an ultramarine green pigment as the functional material, polyvinylidene fluoride (PVDF) as the film-forming material, and LiCl as the humidizer. To prepare the ultramarine green pigment, the sulfur anion is added into the β cage of the 4A zeolite. The mechanisms and properties were discussed based on X-ray diffraction (XRD), scanning electron microscopy (SEM), Raman spectroscopy, and spectroscopic methods. The results show that the as-fabricated bionic leaf based on the 4A zeolite-derived ultramarine green pigment was able to demonstrate a high spectral similarity coefficient of 0.91 with the green leaf. Furthermore, the spectral similarity coefficient was increased to 0.94 after being subjected to a simulated rainforest environment for 48 h, which indicated its high weather durability.

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Antireflection Enhancement by Composite Nanoporous Zeolite 3A–Carbon Thin Film

Cited by 13 publications

References 57 publications

Gold Nanoparticle Self-Aggregation on Surface with 1,6-Hexanedithiol Functionalization

Gold Nanoparticle Self-Aggregation on Surface with 1,6-Hexanedithiol Functionalization

Anti-Reflective Zeolite Coating for Implantable Bioelectronic Devices

Emulating Solar Spectral Reflectance of Natural Leaf with Bionic Leaf Prepared from 4A Zeolite-Derived Ultramarine Green Pigment

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