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Liao, M., Banerjee, D., Hallberg, T., Åkerlind, C., Alam, M. M., Zhang, Q., . . . Jonsson, M. (2023). Cellulose-Based Radiative Cooling and Solar Heating Powers Ionic Thermoelectrics. Advanced Science, 10(8), Article ID 2206510.
Open this publication in new window or tab >>Cellulose-Based Radiative Cooling and Solar Heating Powers Ionic Thermoelectrics
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2023 (English)In: Advanced Science, E-ISSN 2198-3844, Vol. 10, no 8, article id 2206510Article in journal (Refereed) Published
Abstract [en]

Cellulose opens for sustainable materials suitable for radiative cooling thanks to inherent high thermal emissivity combined with low solar absorptance. When desired, solar absorptance can be introduced by additives such as carbon black. However, such materials still shows high thermal emissivity and therefore performs radiative cooling that counteracts the heating process if exposed to the sky. Here, this is addressed by a cellulose-carbon black composite with low mid-infrared (MIR) emissivity and corresponding suppressed radiative cooling thanks to a transparent IR-reflecting indium tin oxide coating. The resulting solar heater provides opposite optical properties in both the solar and thermal ranges compared to the cooler material in the form of solar-reflecting electrospun cellulose. Owing to these differences, exposing the two materials to the sky generated spontaneous temperature differences, as used to power an ionic thermoelectric device in both daytime and nighttime. The study characterizes these effects in detail using solar and sky simulators and through outdoor measurements. Using the concept to power ionic thermoelectric devices shows thermovoltages of >60 mV and 10 degrees C temperature differences already at moderate solar irradiance of approximate to 400 W m(-2).

Place, publisher, year, edition, pages
WILEY, 2023
Keywords
cellulose; ionic thermoelectrics; IR emissivity controlling; radiative cooling; solar heating
National Category
Other Chemical Engineering
Identifiers
urn:nbn:se:liu:diva-191629 (URN)10.1002/advs.202206510 (DOI)000914108200001 ()36646654 (PubMedID)
Note

Funding Agencies|Wallenberg Wood Science Center; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [2009 00971]; Swedish Research Council [2018-04037, 2020-00287]; Knut and Alice Wallenberg Foundation; Linkoeping University

Available from: 2023-02-06 Created: 2023-02-06 Last updated: 2024-02-27Bibliographically approved
Karki, A., Cincotti, G., Chen, S., Stanishev, V., Darakchieva, V., Wang, C., . . . Jonsson, M. (2022). Electrical Tuning of Plasmonic Conducting Polymer Nanoantennas. Advanced Materials, 34(13), Article ID 2107172.
Open this publication in new window or tab >>Electrical Tuning of Plasmonic Conducting Polymer Nanoantennas
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2022 (English)In: Advanced Materials, ISSN 0935-9648, E-ISSN 1521-4095, Vol. 34, no 13, article id 2107172Article in journal (Refereed) Published
Abstract [en]

Nanostructures of conventional metals offer manipulation of light at the nanoscale but are largely limited to static behavior due to fixed material properties. To develop the next frontier of dynamic nano-optics and metasurfaces, this study utilizes the redox-tunable optical properties of conducting polymers, as recently shown to be capable of sustaining plasmons in their most conducting oxidized state. Electrically tunable conducting polymer nano-optical antennas are presented, using nanodisks of poly(3,4-ethylenedioxythiophene:sulfate) (PEDOT:Sulf) as a model system. In addition to repeated on/off switching of the polymeric nanoantennas, the concept enables gradual electrical tuning of the nano-optical response, which was found to be related to the modulation of both density and mobility of the mobile polaronic charge carriers in the polymer. The resonance position of the PEDOT:Sulf nanoantennas can be conveniently controlled by disk size, here reported down to a wavelength of around 1270 nm. The presented concept may be used for electrically tunable metasurfaces, with tunable farfield as well as nearfield. The work thereby opens for applications ranging from tunable flat meta-optics to adaptable smart windows.

Place, publisher, year, edition, pages
Wiley-V C H Verlag GMBH, 2022
Keywords
conducting polymers; dynamic plasmonic nanoantennas; electrical tuning; tunable metasurfaces
National Category
Condensed Matter Physics
Identifiers
urn:nbn:se:liu:diva-183215 (URN)10.1002/adma.202107172 (DOI)000756620400001 ()35064601 (PubMedID)
Note

Funding Agencies|Knut and Alice Wallenberg FoundationKnut & Alice Wallenberg Foundation; Swedish Research Council (VR)Swedish Research Council [2020-00287]; Swedish Foundation for Strategic Research (SSF)Swedish Foundation for Strategic Research; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [2009 00971]

Available from: 2022-03-01 Created: 2022-03-01 Last updated: 2023-12-28Bibliographically approved
Kang, E. S. H., Sriram, K. K., Jeon, I., Kim, J., Chen, S., Kim, K.-H., . . . Jonsson, M. (2022). Organic Anisotropic Excitonic Optical Nanoantennas. Advanced Science, 9(23), Article ID 2201907.
Open this publication in new window or tab >>Organic Anisotropic Excitonic Optical Nanoantennas
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2022 (English)In: Advanced Science, E-ISSN 2198-3844, Vol. 9, no 23, article id 2201907Article in journal (Refereed) Published
Abstract [en]

Optical nanoantennas provide control of light at the nanoscale, which makes them important for diverse areas ranging from photocatalysis and flat metaoptics to sensors and biomolecular tweezing. They have traditionally been limited to metallic and dielectric nanostructures that sustain plasmonic and Mie resonances, respectively. More recently, nanostructures of organic J-aggregate excitonic materials have been proposed capable of also supporting nanooptical resonances, although their advance has been hampered from difficulty in nanostructuring. Here, the authors present the realization of organic J-aggregate excitonic nanostructures, using nanocylinder arrays as model system. Extinction spectra show that they can sustain both plasmon-like resonances and dielectric resonances, owing to the material providing negative and large positive permittivity regions at the different sides of its exciton resonance. Furthermore, it is found that the material is highly anisotropic, leading to hyperbolic and elliptic permittivity regions. Nearfield analysis using optical simulation reveals that the nanostructures therefore support hyperbolic localized surface exciton resonances and elliptic Mie resonances, neither of which has been previously demonstrated for this type of material. The anisotropic nanostructures form a new type of optical nanoantennas, which combined with the presented fabrication process opens up for applications such as fully organic excitonic metasurfaces.

Place, publisher, year, edition, pages
Wiley, 2022
Keywords
hyperbolic polaritons; J-aggregates; localized surface exciton resonances; Mie resonances; nanoantennas
National Category
Other Chemical Engineering
Identifiers
urn:nbn:se:liu:diva-185590 (URN)10.1002/advs.202201907 (DOI)000800419000001 ()35619287 (PubMedID)
Note

Funding Agencies|AngstromForsk Foundation; Knut and Alice Wallenberg Foundation; Swedish Research Council (VR); Swedish Foundation for Strategic Research (SSF); Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [2009 00971]; National Research Foundation of Korea (NRF) [2020R1A2C1102558]; Commercializations Promotion Agency for R&D Outcomes Grant (2022, Research Equipment Technician Training Program) - Korea government (MSIT) [2018R1A6A9056986]; Regional Innovation Strategy (RIS) - Ministry of Education (MOE) [2021RIS-001]; Korea Evaluation Institute of Industrial Technology (KEIT) [20015764]; Korea government (MOTIE) [20005750]

Available from: 2022-06-08 Created: 2022-06-08 Last updated: 2023-06-22Bibliographically approved
Blake, J. C., Rossi, S., Jonsson, M. & Dahlin, A. (2022). Scalable Reflective Plasmonic Structural Colors from Nanoparticles and Cavity Resonances - the Cyan-Magenta-Yellow Approach. Advanced Optical Materials, 10(13), Article ID 2200471.
Open this publication in new window or tab >>Scalable Reflective Plasmonic Structural Colors from Nanoparticles and Cavity Resonances - the Cyan-Magenta-Yellow Approach
2022 (English)In: Advanced Optical Materials, ISSN 2162-7568, E-ISSN 2195-1071, Vol. 10, no 13, article id 2200471Article in journal (Refereed) Published
Abstract [en]

Plasmonic metasurfaces for color generation are emerging as important components for next generation display devices. Fabricating bright plasmonic colors economically and via easily scalable methods, however, remains difficult. Here, the authors demonstrate an efficient and scalable strategy based on colloidal lithography to fabricate silver-based reflective metal-insulator-nanodisk plasmonic cavities that provide a cyan-magenta-yellow (CMY) color palette with high relative luminance. With the same basic structure, they exploit different mechanisms to efficiently produce a complete subtractive color palette. Finite-difference time-domain simulations reveal that these mechanisms include gap surface plasmon modes for thin insulators and hybridized modes between disk plasmons and Fabry-Perot modes for thicker systems. To produce yellow hues, they take advantage of higher-energy gap surface plasmon modes to allow resonance dips in the blue spectral region for comparably large nanodisks, thereby circumventing difficult fabrication of nanodisks less than 80 nm. It is anticipated that incorporation of these strategies can reduce fabrication constraints, produce bright saturated colors, and expedite large-scale production.

Place, publisher, year, edition, pages
Wiley-V C H Verlag GMBH, 2022
Keywords
cavities; gap plasmons; lithography; nanostructures; structural colors
National Category
Other Physics Topics
Identifiers
urn:nbn:se:liu:diva-184867 (URN)10.1002/adom.202200471 (DOI)000788373300001 ()
Note

Funding Agencies|Swedish Foundation for Strategic ResearchSwedish Foundation for Strategic Research [EM16-0002]

Available from: 2022-05-12 Created: 2022-05-12 Last updated: 2023-06-02Bibliographically approved
Shanker, R., Anusuyadevi, P. R., Gamage, S., Hallberg, T., Kariis, H., Banerjee, D., . . . Jonsson, M. (2022). Structurally Colored Cellulose Nanocrystal Films as Transreflective Radiative Coolers. ACS Nano, 16(7), 19156-19162
Open this publication in new window or tab >>Structurally Colored Cellulose Nanocrystal Films as Transreflective Radiative Coolers
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2022 (English)In: ACS Nano, ISSN 1936-0851, E-ISSN 1936-086X, Vol. 16, no 7, p. 19156-19162Article in journal (Refereed) Published
Abstract [en]

Radiative cooling forms an emerging direction in which objects are passively cooled via thermal radiation to cold space. Cooling materials should provide high thermal emissivity (infrared absorptance) and low solar absorptance, making cellulose an ideal and sustainable candidate. Broadband solar-reflective or transparent coolers are not the only systems of interest, but also more pleasingly looking colored systems. However, solutions based on wavelength-selective absorption generate not only color but also heat and thereby counteract the cooling function. Intended as coatings for solar cells, we demonstrate a transreflective cellulose material with minimal solar absorption that generates color by wavelength-selective reflection, while it transmits other parts of the solar spectrum. Our solution takes advantage of the ability of cellulose nanocrystals to self-assemble into helical periodic structures, providing nonabsorptive films with structurally colored reflection. Application of violet-blue, green, and red cellulose films on silicon substrates reduced the temperature by up to 9 degrees C under solar illumination, as result of a combination of radiative cooling and reduced solar absorption due to the wavelength-selective reflection by the colored coating. The present work establishes self-assembled cellulose nanocrystal photonic films as a scalable photonic platform for colored radiative cooling.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2022
Keywords
passive radiative cooling; cellulose nanocrystals; structural colors; self-assembly; thermal radiation; atmospheric transparency window
National Category
Other Physics Topics
Identifiers
urn:nbn:se:liu:diva-187541 (URN)10.1021/acsnano.1c10959 (DOI)000820644100001 ()
Note

Funding Agencies|Knut and Alice Wallenberg foundation; Linkoping University; Wallenberg Wood Science Center; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [2009 00971]; Swedish Foundation for Strategic Research; Wenner-Gren Foundations; Olle Engkvist Foundation [194-0679]; Swedish Research Council

Available from: 2022-08-25 Created: 2022-08-25 Last updated: 2023-11-07Bibliographically approved
Yao, N., Xia, Y., Liu, Y., Chen, S., Jonsson, M. & Zhang, F. (2021). Solution-Processed Highly Efficient Semitransparent Organic Solar Cells with Low Donor Contents. ACS Applied Energy Materials, 4(12), 14335-14341
Open this publication in new window or tab >>Solution-Processed Highly Efficient Semitransparent Organic Solar Cells with Low Donor Contents
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2021 (English)In: ACS Applied Energy Materials, E-ISSN 2574-0962, Vol. 4, no 12, p. 14335-14341Article in journal (Refereed) Published
Abstract [en]

Semitransparent organic solar cells (ST-OSCs) are promising candidates for applications in building-integrated photovoltaics (BIPV) as windows and facades. The challenge to achieve highly efficient ST-OSCs is the trade-off between power conversion efficiency (PCE) and average visible transmittance (AVT). Herein, solution-processed ST-OSCs are demonstrated on the basis a polymer donor, PM6, and a small molecule acceptor, Y6; lowering the visible-absorbing PM6 contents in blends could increase AVT and maintain PCE. Additionally, conductive polymer PEDOT:PSS is used as the top electrode due to its high transparency, good conductivity, and solution processability. Efficient ST-OSCs with 20 wt % PM6 achieve high PCE of 7.46% and AVT of 36.4%. The light utilization efficiency (LUE) of 2.72% is among the best reported values for solution-processed ST-OSCs. This work provides a straightforward approach for solution-processed ST-OSCs by combining a low fraction of visible-wavelength-selective polymer donors with near-infrared nonfullerene acceptors to achieve high PCE and AVT simultaneously.

Place, publisher, year, edition, pages
American Chemical Society, 2021
Keywords
Semitransparent organic solar cells, Low-fraction visible-absorbing donor, Near-infrared-absorbing acceptor, Light utilization efficiency, Solution processability
National Category
Polymer Chemistry
Identifiers
urn:nbn:se:liu:diva-181846 (URN)10.1021/acsaem.1c03017 (DOI)000756324400097 ()2-s2.0-85119974274 (Scopus ID)
Note

Funding agencies: Knut and Alice Wallenberg foundationKnut & Alice Wallenberg Foundation [2016.0059]; Swedish Government Research Area in Materials Science on Functional Materials at Linkoping University (Faculty Grant SFO-Mat-LiU) [200900971]; China Scholarship Council (CSC)China Scholarship Council [201708370115]

Available from: 2021-12-15 Created: 2021-12-15 Last updated: 2022-03-04Bibliographically approved
Chen, S., Kang, E. S. H., Shiran Chaharsoughi, M., Stanishev, V., Kuhne, P., Sun, H., . . . Jonsson, M. (2020). Conductive polymer nanoantennas for dynamic organic plasmonics. Nature Nanotechnology, 15
Open this publication in new window or tab >>Conductive polymer nanoantennas for dynamic organic plasmonics
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2020 (English)In: Nature Nanotechnology, ISSN 1748-3387, E-ISSN 1748-3395, Vol. 15Article in journal (Refereed) Published
Abstract [en]

Being able to dynamically shape light at the nanoscale is oneof the ultimate goals in nano-optics1. Resonant light–matterinteraction can be achieved using conventional plasmonicsbased on metal nanostructures, but their tunability is highlylimited due to a fixed permittivity2. Materials with switchablestates and methods for dynamic control of light–matterinteraction at the nanoscale are therefore desired. Here weshow that nanodisks of a conductive polymer can supportlocalized surface plasmon resonances in the near-infraredand function as dynamic nano-optical antennas, with their resonancebehaviour tunable by chemical redox reactions. Theseplasmons originate from the mobile polaronic charge carriersof a poly(3,4-ethylenedioxythiophene:sulfate) (PEDOT:Sulf)polymer network. We demonstrate complete and reversibleswitching of the optical response of the nanoantennasby chemical tuning of their redox state, which modulatesthe material permittivity between plasmonic and dielectricregimes via non-volatile changes in the mobile chargecarrier density. Further research may study different conductivepolymers and nanostructures and explore their usein various applications, such as dynamic meta-optics andreflective displays.

Place, publisher, year, edition, pages
London: Nature Publishing Group, 2020
National Category
Atom and Molecular Physics and Optics
Identifiers
urn:nbn:se:liu:diva-163089 (URN)10.1038/s41565-019-0583-y (DOI)000510815600005 ()2-s2.0-85076515412 (Scopus ID)
Available from: 2020-01-10 Created: 2020-01-10 Last updated: 2023-12-28Bibliographically approved
Chen, S., Petsagkourakis, I., Spampinato, N., Kuang, C., Liu, X., Brooke, R., . . . Jonsson, M. (2020). Unraveling vertical inhomogeneity in vapour phase polymerized PEDOT:Tos films. Journal of Materials Chemistry A, 8, 18726-18734
Open this publication in new window or tab >>Unraveling vertical inhomogeneity in vapour phase polymerized PEDOT:Tos films
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2020 (English)In: Journal of Materials Chemistry A, ISSN 2050-7488, Vol. 8, p. 18726-18734Article in journal (Refereed) Published
Abstract [en]

The conducting polymer poly(3,4-ethylenedioxythiophene) (PEDOT) forms a promising alternative to conventional inorganic conductors, where deposition of thin films via vapour phase polymerization (VPP) has gained particular interest owing to high electrical conductivity within the plane of the film. The conductivity perpendicular to the film is typically much lower, which may be related not only to preferential alignment of PEDOT crystallites but also to vertical stratification across the film. In this study, we reveal non-linear vertical microstructural variations across VPP PEDOT:Tos thin films, as well as significant differences in doping level between the top and bottom surfaces. The results are consistent with a VPP mechanism based on diffusion-limited transport of polymerization precursors. Conducting polymer films with vertical inhomogeneity may find applications in gradient-index optics, functionally graded thermoelectrics, and optoelectronic devices requiring gradient doping.

Place, publisher, year, edition, pages
Royal Society of Chemistry, 2020
National Category
Materials Chemistry
Identifiers
urn:nbn:se:liu:diva-170838 (URN)10.1039/D0TA06031C (DOI)000572173300015 ()2-s2.0-85091423592 (Scopus ID)
Note

The fulltext is published under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence.

https://creativecommons.org/licenses/by-nc/3.0/

Available from: 2020-10-26 Created: 2020-10-26 Last updated: 2023-12-06Bibliographically approved
Kim, N., Petsagkourakis, I., Chen, S., Berggren, M., Crispin, X., Jonsson, M. & Zozoulenko, I. (2019). Electric transport properties in PEDOT thin films (4ed.). In: John R. Reynolds; Barry C. Thompson; Terje A. Skotheim (Ed.), Conjugated polymers: properties, processing, and applications (pp. 45-128). Boca Raton: CRC Press
Open this publication in new window or tab >>Electric transport properties in PEDOT thin films
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2019 (English)In: Conjugated polymers: properties, processing, and applications / [ed] John R. Reynolds; Barry C. Thompson; Terje A. Skotheim, Boca Raton: CRC Press, 2019, 4, p. 45-128Chapter in book (Refereed)
Abstract [en]

In this chapter, the authors summarize their understanding of Poly(3,4-ethylenedioxythiophene) (PEDOT), with respect to its chemical and physical fundamentals. They focus upon the structure of several PEDOT systems, from the angstrom level and up, and the impact on both electronic and ionic transport. The authors discuss the structural properties of PEDOT:X and PEDOT:poly(styrenesulfonate) based on experimental data probed at the scale ranging from angstrom to submicrometer. The morphology of PEDOT is influenced by the nature of counter-ions, especially at high oxidation levels. The doping anions intercalate between PEDOT chains to form a “sandwich” structure to screen the positive charges in PEDOT chains. The authors provide the main transport coefficients such as electrical conductivity s, Seebeck coefficient S, and Peltier coefficient σ, starting from a general thermodynamic consideration. The optical conductivity of PEDOT has also been examined based on the effective medium approximation, which is normally used to describe microscopic permittivity properties of composites made from several different constituents.

Place, publisher, year, edition, pages
Boca Raton: CRC Press, 2019 Edition: 4
National Category
Materials Engineering Bio Materials
Identifiers
urn:nbn:se:liu:diva-160891 (URN)10.1201/9780429190520-3 (DOI)9780429190520 (ISBN)
Available from: 2019-10-14 Created: 2019-10-14 Last updated: 2023-12-06Bibliographically approved
Brooke, R., Edberg, J., Crispin, X., Berggren, M., Engquist, I. & Jonsson, M. (2019). Greyscale and Paper Electrochromic Polymer Displays by UV Patterning. Polymers, 11(2), Article ID 267.
Open this publication in new window or tab >>Greyscale and Paper Electrochromic Polymer Displays by UV Patterning
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2019 (English)In: Polymers, E-ISSN 2073-4360, Vol. 11, no 2, article id 267Article in journal (Refereed) Published
Abstract [en]

Electrochromic devices have important implications as smart windows for energy efficient buildings, internet of things devices, and in low-cost advertising applications. While inorganics have so far dominated the market, organic conductive polymers possess certain advantages such as high throughput and low temperature processing, faster switching, and superior optical memory. Here, we present organic electrochromic devices that can switch between two high-resolution images, based on UV-patterning and vapor phase polymerization of poly(3,4-ethylenedioxythiophene) films. We demonstrate that this technique can provide switchable greyscale images through the spatial control of a UV-light dose. The color space was able to be further altered via optimization of the oxidant concentration. Finally, we utilized a UV-patterning technique to produce functional paper with electrochromic patterns deposited on porous paper, allowing for environmentally friendly electrochromic displays.

Place, publisher, year, edition, pages
MDPI, 2019
Keywords
conductive polymers; PEDOT; patterning; electrochromic; electrochromic displays; paper displays; digital cellulose; cellulose; paper electronics; electrochromism; vapor phase polymerization
National Category
Other Electrical Engineering, Electronic Engineering, Information Engineering
Identifiers
urn:nbn:se:liu:diva-155591 (URN)10.3390/polym11020267 (DOI)000460296000081 ()2-s2.0-85061197759 (Scopus ID)
Note

Funding Agencies|Knut and Alice Wallenberg Foundation; Swedish Foundation for Strategic Research; Wenner-Gren Foundations; Swedish Government Strategic Research Area in Materials Science on Functional Materials at Linkoping University [2009 00971]; Vinnova

Available from: 2019-03-21 Created: 2019-03-21 Last updated: 2024-01-17Bibliographically approved
Organisations
Identifiers
ORCID iD: ORCID iD iconorcid.org/0000-0002-3002-3639

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