High-Performance, Single-Layer Antireflective Optical Coatings Comprising Mesoporous Silica Nanoparticles

Moghal, Jonathan; Kobler, Johannes; Sauer, Juergen; Best, James P.; Gardener, Martin; Watt, Andrew; Wakefield, Gareth

doi:10.1021/am201494m

Cited by 144 publications

(95 citation statements)

References 42 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Preformed silica nanoparticles have been combined with sol−gel-based silica "binder" to obtain ARCs, albeit at higher than optimum RI values. 12 Recently, coatings with AR properties were produced from a sequential infiltration method that introduced gas phase alumina into swollen polymer films using atomic layer deposition. 13 Broadband functioning is facilitated by multilayer assemblies.…”

Section: Introductionmentioning

confidence: 99%

Robust Operation of Mesoporous Antireflective Coatings under Variable Ambient Conditions

Reid

Taylor

Chen

et al. 2018

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Generating mesoporous films with adequate film thickness and refractive index is a common method to achieve amplitude and phase matching in low-cost interference-based antireflective coatings (ARCs). For high-surface-energy materials, pores on the 2−50 nm (i.e., on the subwavelength scale) are subject to capillary condensation by surrounding gas phase water molecules, which hampers their functioning. In this work, we examine the effect of relative humidity on mesoporous ARCs and present a simple method for the preparation of ARCs with robust operation under variable conditions. The materials route is based on the generation of well-defined porous aluminosilicate networks by block copolymer co-assembly with poly(isobutylene)-block-poly(ethylene oxide) and postsynthesis grafting of trichloro(octyl)silane molecules to the pore walls. The functionalized films exhibited a maximum transmittance value of 99.8%, with an average transmittance of 99.1% in the visible wavelength range from 400 to 700 nm. Crucially, the antireflection performance was maintained at high humidity values, with an average transmittance decrease of only 0.2% and maximum values maintained at 99.7%. This compared to maximum and average losses of 3.6 and 2.7%, respectively, for nonfunctionalized reference samples. The ARCs were shown to retain their optical properties within 50 humidity cycles, indicating long-term stability against fluctuating environmental conditions.

show abstract

Section: Introductionmentioning

confidence: 99%

Robust Operation of Mesoporous Antireflective Coatings under Variable Ambient Conditions

Reid

Taylor

Chen

et al. 2018

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…2,3 Mesoporous optical coatings have been realized by polymer phase separation on the sub-100 nm scale with subsequent removal of one of the phases. 4,5 Other solution-based methods include the fabrication of nanoparticle films by random dense packing 6 or electrostatic attraction, 7 as well as the controlled assembly of charged colloids, 8 hollow 9 or mesoporous 10 silica spheres or polyelectrolyte multilayers. 11 Vacuum-based fabrication approaches are typically relying on glancing angle chemical vapor deposition.…”

mentioning

confidence: 99%

Self-Cleaning Antireflective Optical Coatings

et al. 2013

View full text Add to dashboard Cite

Low-cost antireflection coatings (ARCs) on large optical surfaces are an ingredient-technology for high-performance solar cells. While nanoporous thin films that meet the zero-reflectance conditions on transparent substrates can be cheaply manufactured, their suitability for outdoor applications is limited by the lack of robustness and cleanability.Here, we present a simple method for the manufacture of robust selfcleaning ARCs. Our strategy relies on the self-assembly of a blockcopolymer in combination with silica-based sol−gel chemistry and preformed TiO 2 nanocrystals. The spontaneous dense packing of copolymer micelles followed by a condensation reaction results in an inverse opal-type silica morphology that is loaded with TiO 2 photocatalytic hot-spots. The very low volume fraction of the inorganic network allows the optimization of the antireflecting properties of the porous ARC despite the high refractive index of the embedded photocatalytic TiO 2 nanocrystals. The resulting ARCs combine high optical and self-cleaning performance and can be deposited onto flexible plastic substrates.

show abstract

“…The developmental progress in technological applications advances AR coatings and different monolayer nanostructured designs, composite patterned structures or polymer hybrids has been fabricated which possess low reflectance at broader spectrum region. The composite SiO 2 -Teflon coatings [14] , SiO 2 /TiO 2 particles layer [15,16] , TiO 2 AR coatings [16] , SiO 2 polymer composite coatings [17] , spirooxaize-polystyrene coatings [18] , SiO 2 mesoporous e-ISSN: 2321-6212 p-ISSN: 2347-2278 nanoparticles [19] or polymer AR coatings [20] are common examples of monolayer AR coatings which minimize reflectance at broader region without focusing on other properties such as mechanical thermal or non-wetting properties. Single layer AR coatings are applicable and desirable in different laser applications [21,22] , photodiodes [23] , light emitting diodes [24][25][26] or solar cell [27][28][29][30][31] applications.…”

Section: Single Bilayer and Multilayer Ar Coatingsmentioning

confidence: 99%

A Mini Review: Antireflective Coatings Processing Techniques, Applications and Future Perspective

Khan¹,

Wu²,

Pan³

et al. 2017

Res. Rev. J Mat. Sci

View full text Add to dashboard Cite

Antireflective coatings (AR) are widely applied to eliminate the unwanted surface reflections from the AR coated substrate. In different optoelectronic devices, AR coatings have potential usage in photovoltaic solar cells, sensors, display devices, automobile industries to reduce reflectance, glare and enhance light transmittance. Natural phenomenon inspires researchers, and they generate bionic AR coatings copying the nature such as moth eyes, or cicada wings to fabricate efficient light harvesting AR coatings. In the current review article, we analyse and evaluate critically the progress and recent development in the fabrication of AR thin films comprising organic coatings, inorganic coatings, polymer AR coatings and bionic AR coatings. We predominantly emphasise the AR coatings fabrication by different methods and pinpoints the technological challenges in their real-world reliability. Finally, we address the future challenges and potential strategies for their upcoming prospect.

show abstract

High-Performance, Single-Layer Antireflective Optical Coatings Comprising Mesoporous Silica Nanoparticles

Cited by 144 publications

References 42 publications

Robust Operation of Mesoporous Antireflective Coatings under Variable Ambient Conditions

Robust Operation of Mesoporous Antireflective Coatings under Variable Ambient Conditions

Self-Cleaning Antireflective Optical Coatings

A Mini Review: Antireflective Coatings Processing Techniques, Applications and Future Perspective

Contact Info

Product

Resources

About