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Xiao, T., Tu, S., Tian, T., Chen, W., Cao, W., Liang, S., . . . Müller-Buschbaum, P. (2024). Autonomous self-healing hybrid energy harvester based on the combination of triboelectric nanogenerator and quantum dot solar cell. Nano Energy, 125, Article ID 109555.
Open this publication in new window or tab >>Autonomous self-healing hybrid energy harvester based on the combination of triboelectric nanogenerator and quantum dot solar cell
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2024 (English)In: Nano Energy, ISSN 2211-2855, E-ISSN 2211-3282, Vol. 125, article id 109555Article in journal (Refereed) Published
Abstract [en]

Realization of multi-source energy harvesting with one single device would maximize power output. Thus, it is emerging as a promising strategy towards renewable energy generation and has attracted worldwide attention in the past decades. Capable of capturing mechanical energy that is ubiquitous in the ambient environment, triboelectric nanogenerator (TENG) has been considered a novel yet effective source towards next-generation energy harvesting. In this work, a flexible hybrid energy harvester (HEH) is developed via the rational integration of autonomous self-healing TENG and high bending-stable lead sulfide quantum dot (PbS QD) solar cell, enabling independent electricity generation by two different mechanisms. The single-electrode mode TENG component with self-healing is realized by a polydimethylsiloxane/Triton X-100 (PDMS/TX100) mixture as the dielectric layer and the shared gold (Au) electrode, which generates 0.39 µA of output current (Iout), 24.6 V of output voltages (Vout), 15.4 nC of transfer charges (Qsc), and 7.80 mW m−2 of output power peak density. The thin-film solar cell component is based on a PbS QD layer as the light absorber with a planar structure fabricated under low-cost and compatible conditions, achieving 22.8 mA cm−2 of short-circuit current density (Jsc) and 4.92% of power conversion efficiency (PCE). As a proof of concept, an electronic watch is successfully powered by harnessing ambient mechanical and solar energy with a hybridized energy cell. This approach will offer more opportunities to construct a versatile platform towards remote monitoring and smart home systems.

Place, publisher, year, edition, pages
Elsevier BV, 2024
Keywords
Autonomous self-healing, Grazing-incidence X-ray scattering, Hybrid energy harvester, Quantum dot solar cell, Triboelectric nanogenerator
National Category
Energy Engineering
Identifiers
urn:nbn:se:kth:diva-345767 (URN)10.1016/j.nanoen.2024.109555 (DOI)001223189000001 ()2-s2.0-85189558263 (Scopus ID)
Note

QC 20240424

Available from: 2024-04-18 Created: 2024-04-18 Last updated: 2024-06-04Bibliographically approved
Reus, M. A., Reb, L. K., Kosbahn, D. P., Roth, S. V. & Müller-Buschbaum, P. (2024). INSIGHT: in situ heuristic tool for the efficient reduction of grazing-incidence X-ray scattering data. Journal of applied crystallography, 57, 509-528
Open this publication in new window or tab >>INSIGHT: in situ heuristic tool for the efficient reduction of grazing-incidence X-ray scattering data
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2024 (English)In: Journal of applied crystallography, ISSN 0021-8898, E-ISSN 1600-5767, Vol. 57, p. 509-528Article in journal (Refereed) Published
Abstract [en]

INSIGHT is a Python-based software tool for processing and reducing 2D grazing-incidence wide- and small-angle X-ray scattering (GIWAXS/GISAXS) data. It offers the geometric transformation of the 2D GIWAXS/GISAXS detector image to reciprocal space, including vectorized and parallelized pixelwise intensity correction calculations. An explicit focus on efficient data management and batch processing enables full control of large time-resolved synchrotron and laboratory data sets for a detailed analysis of kinetic GIWAXS/ GISAXS studies of thin films. It processes data acquired with arbitrarily rotated detectors and performs vertical, horizontal, azimuthal and radial cuts in reciprocal space. It further allows crystallographic indexing and GIWAXS pattern simulation, and provides various plotting and export functionalities. Customized scripting offers a one-step solution to reduce, process, analyze and export findings of large in situ and operando data sets.

Place, publisher, year, edition, pages
International Union of Crystallography (IUCr), 2024
Keywords
computer programs, grazing-incidence X-ray scattering, in situ studies, operando studies, time-resolved studies
National Category
Other Computer and Information Science
Identifiers
urn:nbn:se:kth:diva-345751 (URN)10.1107/S1600576723011159 (DOI)2-s2.0-85189931954 (Scopus ID)
Note

QC 20240425

Available from: 2024-04-18 Created: 2024-04-18 Last updated: 2024-04-25Bibliographically approved
Reus, M. A., Baier, T., Lindenmeir, C. G., Weinzierl, A. F., Buyan-Arivjikh, A., Wegener, S. A., . . . Mueller-Buschbaum, P. (2024). Modular slot-die coater for in situ grazing-incidence x-ray scattering experiments on thin films. Review of Scientific Instruments, 95(4), Article ID 043907.
Open this publication in new window or tab >>Modular slot-die coater for in situ grazing-incidence x-ray scattering experiments on thin films
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2024 (English)In: Review of Scientific Instruments, ISSN 0034-6748, E-ISSN 1089-7623, Vol. 95, no 4, article id 043907Article in journal (Refereed) Published
Abstract [en]

Multimodal in situ experiments during slot-die coating of thin films pioneer the way to kinetic studies on thin-film formation. They establish a powerful tool to understand and optimize the formation and properties of thin-film devices, e.g., solar cells, sensors, or LED films. Thin-film research benefits from time-resolved grazing-incidence wide- and small-angle x-ray scattering (GIWAXS/GISAXS) with a sub-second resolution to reveal the evolution of crystal structure, texture, and morphology during the deposition process. Simultaneously investigating optical properties by in situ photoluminescence measurements complements in-depth kinetic studies focusing on a comprehensive understanding of the triangular interdependency of processing, structure, and function for a roll-to-roll compatible, scalable thin-film deposition process. Here, we introduce a modular slot-die coater specially designed for in situ GIWAXS/GISAXS measurements and applicable to various ink systems. With a design for quick assembly, the slot-die coater permits the reproducible and comparable fabrication of thin films in the lab and at the synchrotron using the very same hardware components, as demonstrated in this work by experiments performed at Deutsches Elektronen-Synchrotron (DESY). Simultaneous to GIWAXS/GISAXS, photoluminescence measurements probe optoelectronic properties in situ during thin-film formation. An environmental chamber allows to control the atmosphere inside the coater. Modular construction and lightweight design make the coater mobile, easy to transport, quickly extendable, and adaptable to new beamline environments.

Place, publisher, year, edition, pages
AIP Publishing, 2024
National Category
Condensed Matter Physics
Identifiers
urn:nbn:se:kth:diva-346123 (URN)10.1063/5.0204673 (DOI)001207446400001 ()38656556 (PubMedID)2-s2.0-85191250978 (Scopus ID)
Note

QC 20240503

Available from: 2024-05-03 Created: 2024-05-03 Last updated: 2024-05-03Bibliographically approved
Harder, C., Betker, M., Alexakis, A. E., Bulut, Y., Sochor, B., Söderberg, D., . . . Roth, S. V. (2024). Poly(sobrerol methacrylate) Colloidal Inks Sprayed onto Cellulose Nanofibril Thin Films for Anticounterfeiting Applications. ACS Applied Nano Materials, 7(9), 10840-10851
Open this publication in new window or tab >>Poly(sobrerol methacrylate) Colloidal Inks Sprayed onto Cellulose Nanofibril Thin Films for Anticounterfeiting Applications
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2024 (English)In: ACS Applied Nano Materials, E-ISSN 2574-0970, Vol. 7, no 9, p. 10840-10851Article in journal (Refereed) Published
Abstract [en]

The colloidal layer formation on porous materials is a crucial step for printing and applying functional coatings, which can be used to fabricate anticounterfeiting paper. The deposition of colloidal layers and subsequent thermal treatment allows for modifying the hydrophilicity of the surface of a material. In the present work, wood-based colloidal inks are applied by spray deposition on spray-deposited porous cellulose nanofibrils (CNF) films. The surface modification by thermal annealing of the fabricated colloid-cellulose hybrid thin films is investigated in terms of layering and hydrophobicity. The polymer colloids in the inks are core-shell nanoparticles with different sizes and glass transition temperatures (T-g), thus enabling different and low thermal treatment temperatures. The ratio between the core polymers, poly(sobrerol methacrylate) (PSobMA), and poly(-butyl methacrylate) (PBMA) determines the T-g and hence allows for tailoring of the T-g. The layer formation of the colloidal inks on the porous CNF layer depends on the imbibition properties of the CNF layer which is determined by their morphology. The water adhesion of the CNF layer decreases due to the deposition of the colloids and thermal treatment except for the colloids with a size smaller than the void size of the porous CNF film. In this case, the colloids are imbibed into the CNF layer when T-g of the colloids is reached and the polymer chains transit in a mobile phase. Tailored aggregate and nanoscale-embedded hybrid structures are achieved depending on the colloid properties. The imbibition of these colloids into the porous CNF films is verified with grazing incidence small-angle X-ray scattering. This study shows a route for tuning the nanoscale structure and macroscopic physicochemical properties useful for anticounterfeiting paper.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2024
Keywords
cellulose nanofibrils, thin films, wetting, colloids, colloidal films, surface energy, GISAXS
National Category
Paper, Pulp and Fiber Technology
Identifiers
urn:nbn:se:kth:diva-347168 (URN)10.1021/acsanm.4c01302 (DOI)001227987300001 ()2-s2.0-85192139557 (Scopus ID)
Note

QC 20240604

Available from: 2024-06-04 Created: 2024-06-04 Last updated: 2024-06-04Bibliographically approved
Wang, Y., Xue, J., Zhong, H., Everett, C. R., Jiang, X., Reus, M. A., . . . Ma, W. (2023). Control of the Crystallization and Phase Separation Kinetics in Sequential Blade-Coated Organic Solar Cells by Optimizing the Upper Layer Processing Solvent. Advanced Energy Materials, 13(7), Article ID 2203496.
Open this publication in new window or tab >>Control of the Crystallization and Phase Separation Kinetics in Sequential Blade-Coated Organic Solar Cells by Optimizing the Upper Layer Processing Solvent
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2023 (English)In: Advanced Energy Materials, ISSN 1614-6832, E-ISSN 1614-6840, Vol. 13, no 7, article id 2203496Article in journal (Refereed) Published
Abstract [en]

Sequential deposition of the active layer in organic solar cells (OSCs) is favorable to circumvent the existing drawbacks associated with controlling the microstructure in bulk-heterojunction (BHJ) device fabrication. However, how the processing solvents impact on the morphology during sequential deposition processes is still poorly understood. Herein, high-efficiency OSCs are fabricated by a sequential blade coating (SBC) through optimization of the morphology evolution process induced by processing solvents. It is demonstrated that the device performance is highly dependent on the processing solvent of the upper layer. In situ morphology characterizations reveal that an obvious liquid–solid phase separation can be identified during the chlorobenzene processing of the D18 layer, corresponding to larger phase separation. During chloroform (CF) processing of the D18 layer, a proper aggregation rate of Y6 and favorable intermixing of lower and upper layers results in the enhanced crystallinity of the acceptor. This facilitates efficient exciton dissociation and charge transport with an inhibited charge recombination in the D18/CF-based devices, contributing to a superior performance of 17.23%. These results highlight the importance of the processing solvent for the upper layer in the SBC strategy and suggest the great potential of achieving optimized morphology and high-efficiency OSCs using the SBC strategy.

Place, publisher, year, edition, pages
Wiley, 2023
Keywords
morphology, organic solar cells, sequential blade coating, solvents
National Category
Materials Chemistry Polymer Chemistry
Identifiers
urn:nbn:se:kth:diva-330090 (URN)10.1002/aenm.202203496 (DOI)000905873100001 ()2-s2.0-85145401752 (Scopus ID)
Note

QC 20230626

Available from: 2023-06-26 Created: 2023-06-26 Last updated: 2023-06-26Bibliographically approved
Guan, T., Chen, W., Tang, H., Li, D., Wang, X., Weindl, C. L., . . . Mueller-Buschbaum, P. (2023). Decoding the Self-Assembly Plasmonic Interface Structure in a PbS Colloidal Quantum Dot Solid for a Photodetector. ACS Nano, 17(22), 23010-23019
Open this publication in new window or tab >>Decoding the Self-Assembly Plasmonic Interface Structure in a PbS Colloidal Quantum Dot Solid for a Photodetector
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2023 (English)In: ACS Nano, ISSN 1936-0851, E-ISSN 1936-086X, Vol. 17, no 22, p. 23010-23019Article in journal (Refereed) Published
Abstract [en]

Hybrid plasmonic nanostructures have gained enormous attention in a variety of optoelectronic devices due to their surface plasmon resonance properties. Self-assembled hybrid metal/quantum dot (QD) architectures offer a means of coupling the properties of plasmonics and QDs to photodetectors, thereby modifying their functionality. The arrangement and localization of hybrid nanostructures have an impact on exciton trapping and light harvesting. Here, we present a hybrid structure consisting of self-assembled gold nanospheres (Au NSs) embedded in a solid matrix of PbS QDs for mapping the interface structures and the motion of charge carriers. Grazing-incidence small-angle X-ray scattering is utilized to analyze the localization and spacing of the Au NSs within the hybrid structure. Furthermore, by correlating the morphology of the Au NSs in the hybrid structure with the corresponding differences observed in the performance of photodetectors, we are able to determine the impact of interface charge carrier dynamics in the coupling structure. From the perspective of architecture, our study provides insights into the performance improvement of optoelectronic devices.

Place, publisher, year, edition, pages
American Chemical Society (ACS), 2023
Keywords
self-assembled monolayer, quantum dot, hybridnanostructures, grazing-incidence small-angle X-ray scattering, optoelectronics
National Category
Condensed Matter Physics
Identifiers
urn:nbn:se:kth:diva-341567 (URN)10.1021/acsnano.3c08526 (DOI)001116590300001 ()37948332 (PubMedID)2-s2.0-85178140178 (Scopus ID)
Note

QC 20231222

Available from: 2023-12-22 Created: 2023-12-22 Last updated: 2023-12-22Bibliographically approved
Liu, S., Bettelli, M. A., Wei, X.-F., Capezza, A. J., Sochor, B., Nilsson, F., . . . Hedenqvist, M. S. (2023). Design of Hygroscopic Bioplastic Products Stable in Varying Humidities. Macromolecular materials and engineering, 308(2), Article ID 2200630.
Open this publication in new window or tab >>Design of Hygroscopic Bioplastic Products Stable in Varying Humidities
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2023 (English)In: Macromolecular materials and engineering, ISSN 1438-7492, E-ISSN 1439-2054, Vol. 308, no 2, article id 2200630Article in journal (Refereed) Published
Abstract [en]

Hygroscopic biopolymers like proteins and polysaccharides suffer from humidity-dependent mechanical properties. Because humidity can vary significantly over the year, or even within a day, these polymers will not generally have stable properties during their lifetimes. On wheat gluten, a model highly hygroscopic biopolymer material, it is observed that larger/thicker samples can be significantly more mechanically stable than thinner samples. It is shown here that this is due to slow water diffusion, which, in turn, is due to the rigid polymer structure caused by the double-bond character of the peptide bond, the many bulky peptide side groups, and the hydrogen bond network. More than a year is required to reach complete moisture saturation (≈10 wt.%) in a 1 cm thick plate of glycerol-plasticized wheat gluten, whereas this process takes only one day for a 0.5 mm thick plate. The overall moisture uptake is also retarded by swelling-induced mechanical effects. Hence, hygroscopic biopolymers are better suited for larger/thicker products, where the moisture-induced changes in mechanical properties are smeared out over time, to the extent that the product remains sufficiently tough over climate changes, for example, throughout the course of a year.

Place, publisher, year, edition, pages
Wiley, 2023
Keywords
biopolymers, diffusion, moisture, relative humidity, wheat gluten
National Category
Polymer Technologies
Identifiers
urn:nbn:se:kth:diva-330065 (URN)10.1002/mame.202200630 (DOI)000915358100001 ()2-s2.0-85146320633 (Scopus ID)
Note

QC 20230626

Available from: 2023-06-26 Created: 2023-06-26 Last updated: 2024-01-17Bibliographically approved
Bulut, Y., Sochor, B., Harder, C., Reck, K., Drewes, J., Xu, Z., . . . Roth, S. V. (2023). Diblock copolymer pattern protection by silver cluster reinforcement. Nanoscale, 15(38), 15768-15774
Open this publication in new window or tab >>Diblock copolymer pattern protection by silver cluster reinforcement
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2023 (English)In: Nanoscale, ISSN 2040-3364, E-ISSN 2040-3372, Vol. 15, no 38, p. 15768-15774Article in journal (Refereed) Published
Abstract [en]

Pattern fabrication by self-assembly of diblock copolymers is of significant interest due to the simplicity in fabricating complex structures. In particular, polystyrene-block-poly-4-vinylpyridine (PS-b-P4VP) is a fascinating base material as it forms an ordered micellar structure on silicon surfaces. In this work, silver (Ag) is applied using direct current magnetron sputter deposition and high-power impulse magnetron sputter deposition on an ordered micellar PS-b-P4VP layer. The fabricated hybrid materials are structurally analyzed by field emission scanning electron microscopy, atomic force microscopy, and grazing incidence small angle X-ray scattering. When applying simple aqueous posttreatment, the pattern is stable and reinforced by Ag clusters, making micellar PS-b-P4VP ordered layers ideal candidates for lithography. The pristine micellar pattern of the diblock copolymer PS-b-P4VP degrades upon drying of a water droplet, which can be stabilized and inhibited upon deposition of silver clusters.

Place, publisher, year, edition, pages
Royal Society of Chemistry (RSC), 2023
National Category
Materials Chemistry
Identifiers
urn:nbn:se:kth:diva-338743 (URN)10.1039/d3nr03215a (DOI)001075207900001 ()37740389 (PubMedID)2-s2.0-85172999645 (Scopus ID)
Note

QC 20231030

Available from: 2023-10-30 Created: 2023-10-30 Last updated: 2023-11-15Bibliographically approved
Chumakova, A., Kirner, F., Chumakov, A., Roth, S. V., Bosak, A. & Sturm, E. V. (2023). Exploring the Crystalline Structure of Gold Mesocrystals Using X-ray Diffraction. Crystals, 13(8), Article ID 1204.
Open this publication in new window or tab >>Exploring the Crystalline Structure of Gold Mesocrystals Using X-ray Diffraction
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2023 (English)In: Crystals, ISSN 2073-4352, Vol. 13, no 8, article id 1204Article in journal (Refereed) Published
Abstract [en]

Mesocrystals are a class of nanostructured material where individual nanocrystals are arranged in a distinct crystallographic orientation. The multiple-length-scale order in such materials plays an essential role in the emergent physical and chemical phenomena. Our work studies the structure of a faceted mesocrystal composed of polystyrene-functionalized single crystalline gold nanoparticles using complementary ultrasmall- and wide-angle X-ray scattering (USAXS and WAXS) with electron microscopy. The results of the data analysis shed some light on the details of the microscopic structure of mesocrystals and their structuration principle.

Place, publisher, year, edition, pages
MDPI AG, 2023
Keywords
gold nanoparticles, mesocrystal, small-angle X-ray diffraction, supercrystallography, wide-angle X-ray diffraction
National Category
Materials Chemistry
Identifiers
urn:nbn:se:kth:diva-336555 (URN)10.3390/cryst13081204 (DOI)001056179800001 ()2-s2.0-85169171564 (Scopus ID)
Note

QC 20230918

Available from: 2023-09-18 Created: 2023-09-18 Last updated: 2023-09-22Bibliographically approved
Jiang, X., Grott, S., Körstgens, V., Wienhold, K. S., Li, Z., Zhang, J., . . . Müller-Buschbaum, P. (2023). Film Formation Kinetics of Polymer Donor and Nonfullerene Acceptor Active Layers During Printing Out of 1,2,4-Trimethylbenzene in Ambient Conditions. Solar RRL, 7(6), Article ID 2201077.
Open this publication in new window or tab >>Film Formation Kinetics of Polymer Donor and Nonfullerene Acceptor Active Layers During Printing Out of 1,2,4-Trimethylbenzene in Ambient Conditions
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2023 (English)In: Solar RRL, E-ISSN 2367-198X, Vol. 7, no 6, article id 2201077Article in journal (Refereed) Published
Abstract [en]

Slot-die coating is a promising upscaling fabrication method to promote commercialization in the field of organic solar cells. Herein, the nonfullerene active layer blend of a conjugated polymer PffBT4T-2OD and a small molecule acceptor EH-IDTBR, which is printed out of the nonhalogenated solvent 1,2,4-trimethylbenzene, is studied. The film formation kinetics of the active layer PffBT4T-2OD:EH-IDTBR is probed in terms of the temporal evolutions in morphology as well as molecular conformation and aggregation as revealed by in situ grazing-incidence small angle X-ray scattering and UV–vis spectroscopy during the film printing process. A five-regime mesoscale domain growth process is observed in the active layer from the liquid state to the final dry state. The solvent evaporation-induced domain growth is accompanied with molecular stacking in a distinct J-type aggregation of the acceptor and a slight H-type aggregation of the donor molecules. The printed active layers exhibit an edge-on dominated PffBT4T-2OD and a face-on dominated EH-IDTBR crystallite structure. Compared to the neat PffBT4T-2OD and EH-IDTBR films, in the active layer, the crystallite structure deviates slightly in lattice spacing.

Place, publisher, year, edition, pages
Wiley, 2023
Keywords
in situ GISAXS, in situ UV–vis, nonfullerene acceptors, printing, slot-die coating
National Category
Materials Chemistry
Identifiers
urn:nbn:se:kth:diva-330059 (URN)10.1002/solr.202201077 (DOI)000919856800001 ()2-s2.0-85146730645 (Scopus ID)
Note

QC 20230626

Available from: 2023-06-26 Created: 2023-06-26 Last updated: 2023-06-26Bibliographically approved
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ORCID iD: ORCID iD iconorcid.org/0000-0002-6940-6012

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