Innovative CNT-based composite coatings for the stray light reduction

Bahlawane, Naoufal; Pachot, Charlotte; Lafont, Ugo

doi:10.1117/12.2296152

Cited by 9 publications

(16 citation statements)

References 11 publications

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“…Measurements did not reveal any quantifiable diffuse transmission or diffuse reflection. A comparison of all three structures with others ,, and the corresponding optical measurements are given in the SI (see Figure S1).…”

Section: Resultsmentioning

confidence: 99%

“…Incorporating these structures in solar cells led to an efficiency increase of 16% . Beside nanoparticles, carbon nanotubes can achieve similar high absorption characteristics, but it was also possible to further expand the spectral range up to 2300 nm at a 3 times lower film thickness of only 3 μm …”

mentioning

confidence: 99%

“…In this paper, we report on a broadband absorber structure for the UV, visible (VIS), and near-infrared (NIR) region, which merges the morphological properties of nanowire-like structures , and nanoparticles to further expand the absorption range. We used a recently developed ALD fabrication protocol known as metastable atomic layer deposition (MS-ALD). , Both the template deposition and the ALD technique are large-scale integrable, which allows for the fabrication of large surface areas and high throughput. , The resulting structures are highly absorbent from the VIS to the NIR region (>98% in the range of 220 to 2500 nm).…”

mentioning

confidence: 99%

“…6 Beside nanoparticles, carbon nanotubes can achieve similar high absorption characteristics, but it was also possible to further expand the spectral range up to 2300 nm at a 3 times lower film thickness of only 3 μm. 7 In this paper, we report on a broadband absorber structure for the UV, visible (VIS), and near-infrared (NIR) region, which merges the morphological properties of nanowire-like structures 7,8 and nanoparticles 5 to further expand the absorption range. We used a recently developed ALD fabrication protocol known as metastable atomic layer deposition (MS-ALD).…”

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confidence: 99%

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Metastable Atomic Layer Deposition: 3D Self-Assembly toward Ultradark Materials

et al. 2020

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Black body materials are promising candidates to meet future energy demands, as they are able to harvest energy from the total bandwidth of solar radiation. Here, we report on high-absorption near-blackbody-like structures (>98% for a wide solar spectrum range from 220 to 2500 nm) consisting of a silica scaffold and Ag nanoparticles with a layer thickness below 10 μm, fabricated using metastable atomic layer deposition (MS-ALD). Several effects contribute collectively and in a synergistic manner to the ultrahigh absorption, including the pronounced heterogeneity of the nanoparticles in size and shape, particle plasmon hybridization, and the trapping of omnidirectionally scattered light in the 3D hierarchical hybrid structures. We propose that, in the future, MS-ALD needs to be considered as a simple and promising method to fabricate blackbody materials with excellent broadband absorption.

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Section: Resultsmentioning

confidence: 99%

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Metastable Atomic Layer Deposition: 3D Self-Assembly toward Ultradark Materials

et al. 2020

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“…This limitation was overcome via the conformal deposition of metal oxides around CNTs to form a core/shell structure. 32 In this context, shells of aluminum oxide or silicon oxide were investigated. Here we do investigate the ALD of TiO 2 around the CNTs to provide them the ability to split water in a photoelectrochemical setup.…”

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confidence: 99%

CNT–TiO₂ core–shell structure: synthesis and photoelectrochemical characterization

2021

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Super Black Coating on the Commercial Black Anodized Al(6061) by Direct and Scalable CVD–Growth of Carbon Nanofibers

Truong,

Yuk,

Kim

et al. 2024

Adv Materials Inter

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Using carbon‐based super black coatings on optical devices can achieve superior stray light suppression for applications in astronomy. For the first time, the work presents carbon nanofiber‐based black coating on commercial anodized Al(6061), which facilitates the development of a highly effective route to directly integrate the carbon‐based material on the common substrate for optical baffles. The scalable and available structural engineering effect is synergized with the anodized Al(6061) coating with black dye composed of nickel catalyst and the intrinsic broadband light absorption of the CVD‐grown carbon material to ultimately achieve a superior broadband light absorber. Nickel catalysts embedded in anodized Al(6061) offer a practical pathway for carbon nanofiber growth through CVD without additional stacked catalysts. The CVD‐growing mechanism and CNF nanostructures are demonstrated through TEM and EDS element mapping, SEM, and Raman spectroscopy. CNF‐grown Al(6061) substrates offer above 99% broadband light absorption and low light reflectance below 1% in UV–vis–NIR and mid–IR ranges. This facile approach has been useful for super black coating on Al(6061)‐based complicated sculptures, such as concave substrate and an optical baffle. These results have demonstrated a facile method that can significantly impact the industrial scaling‐up of high‐quality, super‐black coating on spaceborne devices.

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Innovative CNT-based composite coatings for the stray light reduction

Cited by 9 publications

References 11 publications

Metastable Atomic Layer Deposition: 3D Self-Assembly toward Ultradark Materials

Metastable Atomic Layer Deposition: 3D Self-Assembly toward Ultradark Materials

CNT–TiO₂ core–shell structure: synthesis and photoelectrochemical characterization

Super Black Coating on the Commercial Black Anodized Al(6061) by Direct and Scalable CVD–Growth of Carbon Nanofibers

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Innovative CNT-based composite coatings for the stray light reduction

Cited by 9 publications

References 11 publications

Metastable Atomic Layer Deposition: 3D Self-Assembly toward Ultradark Materials

Metastable Atomic Layer Deposition: 3D Self-Assembly toward Ultradark Materials

CNT–TiO2 core–shell structure: synthesis and photoelectrochemical characterization

Super Black Coating on the Commercial Black Anodized Al(6061) by Direct and Scalable CVD–Growth of Carbon Nanofibers

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CNT–TiO₂ core–shell structure: synthesis and photoelectrochemical characterization