Light scattering materials for energy-related applications: Determination of absorption and scattering coefficients

Junxin Wang; Annica M. Nilsson; David Barrios; William E. Vargas; Ewa Wäckelgård; Gunnar A. Niklasson

doi:10.1016/j.matpr.2020.01.339

Light scattering materials for energy-related applications: Determination of absorption and scattering coefficients

Junxin Wang
, Annica M. Nilsson
, David Barrios
, William E. Vargas
, Ewa Wäckelgård
, Gunnar A. Niklasson

Research Group in Telecommunication Systems (GISTEL)

Research output: Contribution to journal › Conference article › peer-review

12 Scopus citations

Abstract

To facilitate optical design of energy-efficient materials and devices, a detailed knowledge of their basic optical parameters is necessary. In this paper we present a novel method for determining scattering (S) and absorption (K) coefficients from total transmittance and reflectance measurements by inversion of the Kubelka-Munk theory. The reflectance parameters appearing in this theory depend on the angular distribution of scattered light inside the material. The versatility of our method is demonstrated by a reanalysis of experimental data for several materials of interest in energy-related applications. Specifically, we report spectra of S and K for: (a) pigmented polymer foils for radiative cooling applications; (b) suspended particle devices for smart windows; (c) solar reflecting TiO₂-pigmented paints and (d) selective solar absorbing paints for solar collectors.

Original language	English
Pages (from-to)	2474-2480
Number of pages	7
Journal	Materials Today: Proceedings
Volume	33
DOIs	https://doi.org/10.1016/j.matpr.2020.01.339
State	Published - 2019
Event	2019 Fall Meeting Metal Oxide- and Oxyhydride-based Nanomaterials for Energy and Environment-related Applications, EMRS 2019 - Warsaw, Poland Duration: 16 Sep 2019 → 19 Sep 2019

Bibliographical note

Funding Information:
This work was supported by the Swedish Research Council grant 2016-03713 . We thank Cricursa S. A. for supplying SPD devices and Peter Greenwood for supplying the TiO 2 paints. We also acknowledge Tuquabo Tesfamichael and Torbjörn Nilsson for part of the reanalyzed experimental data.

Publisher Copyright:
© 2019 Elsevier Ltd. All rights reserved.

Keywords

Absorption coefficient
Kubelka-Munk theory
Light scattering
Paint
Pigmented polymer
Scattering coefficient
Suspended particle device

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10.1016/j.matpr.2020.01.339

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@article{ba0fe64833c44ff1931445677663cd6a,

title = "Light scattering materials for energy-related applications: Determination of absorption and scattering coefficients",

abstract = "To facilitate optical design of energy-efficient materials and devices, a detailed knowledge of their basic optical parameters is necessary. In this paper we present a novel method for determining scattering (S) and absorption (K) coefficients from total transmittance and reflectance measurements by inversion of the Kubelka-Munk theory. The reflectance parameters appearing in this theory depend on the angular distribution of scattered light inside the material. The versatility of our method is demonstrated by a reanalysis of experimental data for several materials of interest in energy-related applications. Specifically, we report spectra of S and K for: (a) pigmented polymer foils for radiative cooling applications; (b) suspended particle devices for smart windows; (c) solar reflecting TiO2-pigmented paints and (d) selective solar absorbing paints for solar collectors.",

keywords = "Absorption coefficient, Kubelka-Munk theory, Light scattering, Paint, Pigmented polymer, Scattering coefficient, Suspended particle device",

author = "Junxin Wang and Nilsson, \{Annica M.\} and David Barrios and Vargas, \{William E.\} and Ewa W{\"a}ckelg{\aa}rd and Niklasson, \{Gunnar A.\}",

note = "Publisher Copyright: {\textcopyright} 2019 Elsevier Ltd. All rights reserved.; 2019 Fall Meeting Metal Oxide- and Oxyhydride-based Nanomaterials for Energy and Environment-related Applications, EMRS 2019 ; Conference date: 16-09-2019 Through 19-09-2019",

year = "2019",

doi = "10.1016/j.matpr.2020.01.339",

language = "English",

volume = "33",

pages = "2474--2480",

journal = "Materials Today: Proceedings",

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TY - JOUR

T1 - Light scattering materials for energy-related applications

T2 - 2019 Fall Meeting Metal Oxide- and Oxyhydride-based Nanomaterials for Energy and Environment-related Applications, EMRS 2019

AU - Wang, Junxin

AU - Nilsson, Annica M.

AU - Barrios, David

AU - Vargas, William E.

AU - Wäckelgård, Ewa

AU - Niklasson, Gunnar A.

PY - 2019

Y1 - 2019

N2 - To facilitate optical design of energy-efficient materials and devices, a detailed knowledge of their basic optical parameters is necessary. In this paper we present a novel method for determining scattering (S) and absorption (K) coefficients from total transmittance and reflectance measurements by inversion of the Kubelka-Munk theory. The reflectance parameters appearing in this theory depend on the angular distribution of scattered light inside the material. The versatility of our method is demonstrated by a reanalysis of experimental data for several materials of interest in energy-related applications. Specifically, we report spectra of S and K for: (a) pigmented polymer foils for radiative cooling applications; (b) suspended particle devices for smart windows; (c) solar reflecting TiO2-pigmented paints and (d) selective solar absorbing paints for solar collectors.

AB - To facilitate optical design of energy-efficient materials and devices, a detailed knowledge of their basic optical parameters is necessary. In this paper we present a novel method for determining scattering (S) and absorption (K) coefficients from total transmittance and reflectance measurements by inversion of the Kubelka-Munk theory. The reflectance parameters appearing in this theory depend on the angular distribution of scattered light inside the material. The versatility of our method is demonstrated by a reanalysis of experimental data for several materials of interest in energy-related applications. Specifically, we report spectra of S and K for: (a) pigmented polymer foils for radiative cooling applications; (b) suspended particle devices for smart windows; (c) solar reflecting TiO2-pigmented paints and (d) selective solar absorbing paints for solar collectors.

KW - Absorption coefficient

KW - Kubelka-Munk theory

KW - Light scattering

KW - Paint

KW - Pigmented polymer

KW - Scattering coefficient

KW - Suspended particle device

UR - https://www.scopus.com/pages/publications/85102424534

U2 - 10.1016/j.matpr.2020.01.339

DO - 10.1016/j.matpr.2020.01.339

M3 - Artículo de la conferencia

AN - SCOPUS:85102424534

SN - 2214-7853

VL - 33

SP - 2474

EP - 2480

JO - Materials Today: Proceedings

JF - Materials Today: Proceedings

Y2 - 16 September 2019 through 19 September 2019

ER -

Light scattering materials for energy-related applications: Determination of absorption and scattering coefficients

Abstract

Bibliographical note

Keywords

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