Origin of high optical contrast in zinc-zinc oxide electrodeposits for dynamic windows

Moon, Cheon Woo; Bhoumik, Nikhil Chandra; Mondol, Profulla; Park, Sung Hyuk; Jang, Ho Won; Barile, Christopher J.

doi:10.1016/j.nanoen.2023.108666

Cited by 5 publications

(4 citation statements)

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“…In our previous research, near-field enhancement properties of various metals were discussed using the plasmon quality factor (Q) at a wavelength of 500 nm [ 15 ]. To delve into the discussion, two metal materials, chromium (Cr) and magnesium (Mg), were selected.…”

Section: Resultsmentioning

confidence: 99%

“…When the size of the nanoparticle decreases, the nanoparticle array converges into a thin film, which loses interparticle optical interactions. Vice versa, when the size of nanoparticles increases, the system converges into an ITO-only case, except for Mie resonance in the very narrow wavelength range [ 15 , 27 ]. Therefore, a 40 nm diameter is adopted in the following simulations.…”

Section: Resultsmentioning

confidence: 99%

“…Due to the polarization dependency of the hexagonal array, it is not considered for the simulation. Note that discussions for nanoparticle multilayer are not conducted here; Readers could refer instead to our previous research [ 15 ]. In short, transmission eventually reaches zero by increasing the number of layers, but tinting efficiency is dependent on the morphology and contents.…”

Section: Resultsmentioning

confidence: 99%

“…Herein, to provide an optical interpretation basis and insight into the further RME smart window development, finite-difference time-domain (FDTD) electromagnetic simulations of the metal nanostructure and its components in the RME smart window are performed in terms of refractive index modulation. Nanomaterials with relatively low-quality (Cr) and high-quality (Mg) plasmonic properties were selected as two extreme examples that were suggested in previous research [ 15 ]. Advantages in transmission with metal electrodeposits are investigated via hypothetical metal nanoparticle array simulations.…”

Section: Introductionmentioning

confidence: 99%

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Refractive Index Modulation for Metal Electrodeposition-Based Active Smart Window Applications

Kim,

Kang,

Moon

2024

Micromachines

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One of the remarkable choices for active smart window technology is adopting a metal active layer via reversible metal electrodeposition (RME). As the metal layer efficiently blocks the solar energy gain, even a hundred-nanometer-thick scale, RME-based smart window has great attention. Recent developments are mainly focused on the various cases of electrolyte components and composition meeting technological standards. As metal nanostructures formed through the RME process involve plasmonic phenomena, advanced analysis, including plasmonic optics, which is beyond Beer–Lambert’s law, should be considered. However, as there is a lack of debates on the plasmonic optics applied to RME smart window technology, as research is mainly conducted through an exhaustive process. In this paper, in order to provide insight into the RME-based smart window development and alleviate the unclear part of plasmonic optics applied to the field, finite-difference time-domain electromagnetic simulations are conducted. In total, two extremely low-quality (Cr) and high-quality (Mg) plasmonic materials based on a nanoparticle array are considered as a metal medium. In addition, optical effects caused by the metal active layer, electrolyte, and nanoparticle embedment are investigated in detail. Overall simulations suggest that the effective refractive index is a decisive factor in the performance of RME-based smart windows.

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Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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