Silica-silicon composites for near-infrared reflection: A comprehensive computational and experimental study

Kevin Conley; Shima Moosakhani; Vaibhav Thakore; Yanling Ge; Joonas Lehtonen; Mikko Karttunen; Simo Pekka Hannula; Tapio Ala-Nissila

doi:10.1016/j.ceramint.2021.02.257

Silica-silicon composites for near-infrared reflection: A comprehensive computational and experimental study

Kevin Conley, Shima Moosakhani, Vaibhav Thakore, Yanling Ge, Joonas Lehtonen, Mikko Karttunen, Simo Pekka Hannula, Tapio Ala-Nissila^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › Scientific › peer-review

7 Citations (Scopus)

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Abstract

Compact layers containing embedded semiconductor particles consolidated using pulsed electric current sintering exhibit intense, broadband near-infrared reflectance. The composites consolidated from nano- or micro-silica powder have a different porous microstructure which causes scattering at the air-matrix interface and larger reflectance primarily in the visible region. The 3 mm thick composite compacts reflect up to 72% of the incident radiation in the near-infrared region with a semiconductor microinclusion volume fraction of 1% which closely matches predictions from multiscale Monte Carlo modeling and Kubelka-Munk theory. Further, the calculated spectra predict a reddish tan compact with improved reflectance can be obtained by decreasing the average particle size or broadening the standard deviation. The high reflectance is achieved with minimal dissipative losses and facile manufacturing, and the composites described herein are well-suited to control the radiative transfer of heat in devices at high temperature and under harsh conditions.

Original language	English
Pages (from-to)	16833-16840
Number of pages	8
Journal	Ceramics International
Volume	47
Issue number	12
Early online date	2021
DOIs	https://doi.org/10.1016/j.ceramint.2021.02.257
Publication status	Published - 15 Jun 2021
MoE publication type	A1 Journal article-refereed

Funding

This work was performed as part of the Academy of Finland project 314488 and QTF Centre of Excellence program (312298, KC and TAN). We acknowledge the provision of facilities and technical support by Aalto University at OtaNano - Nanomicroscopy Center (Aalto-NMC); computational resources provided by CSC - IT Center for Science (Finland) and by the Aalto Science-IT project (Aalto University School of Science); Natural Sciences and Engineering Research Council (NSERC) of Canada (MK); Canada Research Chairs Program (MK); and Compute Canada (www.computecanada.ca).

Keywords

A - sintering
B - composites
C - optical properties
D - SiO

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10.1016/j.ceramint.2021.02.257Licence: CC BY

Silica-silicon composites for near-infrared reflectionFinal published version, 5.37 MBLicence: CC BY

Cite this

@article{d54066a86df54de4a83fe28d2fe24d15,

title = "Silica-silicon composites for near-infrared reflection: A comprehensive computational and experimental study",

abstract = "Compact layers containing embedded semiconductor particles consolidated using pulsed electric current sintering exhibit intense, broadband near-infrared reflectance. The composites consolidated from nano- or micro-silica powder have a different porous microstructure which causes scattering at the air-matrix interface and larger reflectance primarily in the visible region. The 3 mm thick composite compacts reflect up to 72\% of the incident radiation in the near-infrared region with a semiconductor microinclusion volume fraction of 1\% which closely matches predictions from multiscale Monte Carlo modeling and Kubelka-Munk theory. Further, the calculated spectra predict a reddish tan compact with improved reflectance can be obtained by decreasing the average particle size or broadening the standard deviation. The high reflectance is achieved with minimal dissipative losses and facile manufacturing, and the composites described herein are well-suited to control the radiative transfer of heat in devices at high temperature and under harsh conditions.",

keywords = "A - sintering, B - composites, C - optical properties, D - SiO",

author = "Kevin Conley and Shima Moosakhani and Vaibhav Thakore and Yanling Ge and Joonas Lehtonen and Mikko Karttunen and Hannula, \{Simo Pekka\} and Tapio Ala-Nissila",

note = "Funding Information: This work was performed as part of the Academy of Finland project 314488 and QTF Centre of Excellence program (312298, KC and TAN). We acknowledge the provision of facilities and technical support by Aalto University at OtaNano - Nanomicroscopy Center (Aalto-NMC); computational resources provided by CSC - IT Center for Science (Finland) and by the Aalto Science-IT project (Aalto University School of Science); Natural Sciences and Engineering Research Council (NSERC) of Canada (MK); Canada Research Chairs Program (MK); and Compute Canada (www.computecanada.ca). Publisher Copyright: {\textcopyright} 2021 The Authors Copyright: Copyright 2021 Elsevier B.V., All rights reserved.",

year = "2021",

month = jun,

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doi = "10.1016/j.ceramint.2021.02.257",

language = "English",

volume = "47",

pages = "16833--16840",

journal = "Ceramics International",

issn = "0272-8842",

publisher = "Elsevier",

number = "12",

}

TY - JOUR

T1 - Silica-silicon composites for near-infrared reflection

T2 - A comprehensive computational and experimental study

AU - Conley, Kevin

AU - Moosakhani, Shima

AU - Thakore, Vaibhav

AU - Ge, Yanling

AU - Lehtonen, Joonas

AU - Karttunen, Mikko

AU - Hannula, Simo Pekka

AU - Ala-Nissila, Tapio

N1 - Funding Information: This work was performed as part of the Academy of Finland project 314488 and QTF Centre of Excellence program (312298, KC and TAN). We acknowledge the provision of facilities and technical support by Aalto University at OtaNano - Nanomicroscopy Center (Aalto-NMC); computational resources provided by CSC - IT Center for Science (Finland) and by the Aalto Science-IT project (Aalto University School of Science); Natural Sciences and Engineering Research Council (NSERC) of Canada (MK); Canada Research Chairs Program (MK); and Compute Canada (www.computecanada.ca). Publisher Copyright: © 2021 The Authors Copyright: Copyright 2021 Elsevier B.V., All rights reserved.

PY - 2021/6/15

Y1 - 2021/6/15

N2 - Compact layers containing embedded semiconductor particles consolidated using pulsed electric current sintering exhibit intense, broadband near-infrared reflectance. The composites consolidated from nano- or micro-silica powder have a different porous microstructure which causes scattering at the air-matrix interface and larger reflectance primarily in the visible region. The 3 mm thick composite compacts reflect up to 72% of the incident radiation in the near-infrared region with a semiconductor microinclusion volume fraction of 1% which closely matches predictions from multiscale Monte Carlo modeling and Kubelka-Munk theory. Further, the calculated spectra predict a reddish tan compact with improved reflectance can be obtained by decreasing the average particle size or broadening the standard deviation. The high reflectance is achieved with minimal dissipative losses and facile manufacturing, and the composites described herein are well-suited to control the radiative transfer of heat in devices at high temperature and under harsh conditions.

AB - Compact layers containing embedded semiconductor particles consolidated using pulsed electric current sintering exhibit intense, broadband near-infrared reflectance. The composites consolidated from nano- or micro-silica powder have a different porous microstructure which causes scattering at the air-matrix interface and larger reflectance primarily in the visible region. The 3 mm thick composite compacts reflect up to 72% of the incident radiation in the near-infrared region with a semiconductor microinclusion volume fraction of 1% which closely matches predictions from multiscale Monte Carlo modeling and Kubelka-Munk theory. Further, the calculated spectra predict a reddish tan compact with improved reflectance can be obtained by decreasing the average particle size or broadening the standard deviation. The high reflectance is achieved with minimal dissipative losses and facile manufacturing, and the composites described herein are well-suited to control the radiative transfer of heat in devices at high temperature and under harsh conditions.

KW - A - sintering

KW - B - composites

KW - C - optical properties

KW - D - SiO

UR - https://www.scopus.com/pages/publications/85102476696

U2 - 10.1016/j.ceramint.2021.02.257

DO - 10.1016/j.ceramint.2021.02.257

M3 - Article

AN - SCOPUS:85102476696

SN - 0272-8842

VL - 47

SP - 16833

EP - 16840

JO - Ceramics International

JF - Ceramics International

IS - 12

ER -

Silica-silicon composites for near-infrared reflection: A comprehensive computational and experimental study

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Keywords

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Novel measurement and sensing technologies for thermal radiation of unwanted fires

OtaNano

OtaNano - Nanomicroscopy Center

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Silica-silicon composites for near-infrared reflection: A comprehensive computational and experimental study

Abstract

Funding

Keywords

Access to Document

Other files and links

Fingerprint

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Novel measurement and sensing technologies for thermal radiation of unwanted fires

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OtaNano

OtaNano - Nanomicroscopy Center

Science-IT

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