1
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Fiedler S, Frenzel F, Würth C, Tavernaro I, Grüne M, Schweizer S, Engel A, Resch-Genger U. Interlaboratory Comparison on Absolute Photoluminescence Quantum Yield Measurements of Solid Light Converting Phosphors with Three Commercial Integrating Sphere Setups. Anal Chem 2024; 96:6730-6737. [PMID: 38629445 PMCID: PMC11063975 DOI: 10.1021/acs.analchem.4c00372] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Revised: 04/04/2024] [Accepted: 04/07/2024] [Indexed: 05/01/2024]
Abstract
Scattering luminescent materials dispersed in liquid and solid matrices and luminescent powders are increasingly relevant for fundamental research and industry. Examples are luminescent nano- and microparticles and phosphors of different compositions in various matrices or incorporated into ceramics with applications in energy conversion, solid-state lighting, medical diagnostics, and security barcoding. The key parameter to characterize the performance of these materials is the photoluminescence/fluorescence quantum yield (Φf), i.e., the number of emitted photons per number of absorbed photons. To identify and quantify the sources of uncertainty of absolute measurements of Φf of scattering samples, the first interlaboratory comparison (ILC) of three laboratories from academia and industry was performed by following identical measurement protocols. Thereby, two types of commercial stand-alone integrating sphere setups with different illumination and detection geometries were utilized for measuring the Φf of transparent and scattering dye solutions and solid phosphors, namely, YAG:Ce optoceramics of varying surface roughness, used as converter materials for blue light emitting diodes. Special emphasis was dedicated to the influence of the measurement geometry, the optical properties of the blank utilized to determine the number of photons of the incident excitation light absorbed by the sample, and the sample-specific surface roughness. While the Φf values of the liquid samples matched between instruments, Φf measurements of the optoceramics with different blanks revealed substantial differences. The ILC results underline the importance of the measurement geometry, sample position, and blank for reliable Φf data of scattering the YAG:Ce optoceramics, with the blank's optical properties accounting for uncertainties exceeding 20%.
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Affiliation(s)
- Saskia Fiedler
- Division
of Biophotonics, Federal Institute for Materials Research and Testing
(BAM), Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
| | - Florian Frenzel
- Division
of Biophotonics, Federal Institute for Materials Research and Testing
(BAM), Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
| | - Christian Würth
- Division
of Biophotonics, Federal Institute for Materials Research and Testing
(BAM), Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
| | - Isabella Tavernaro
- Division
of Biophotonics, Federal Institute for Materials Research and Testing
(BAM), Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
| | - Michelle Grüne
- Faculty
of Electrical Engineering, South Westphalia
University of Applied Sciences, Lübecker Ring 2, 59494 Soest, Germany
| | - Stefan Schweizer
- Faculty
of Electrical Engineering, South Westphalia
University of Applied Sciences, Lübecker Ring 2, 59494 Soest, Germany
- Fraunhofer
Application Center for Inorganic Phosphors, Branch Lab of Fraunhofer Institute for Microstructure of Materials
and Systems IMWS, Lübecker
Ring 2, 59494 Soest, Germany
| | - Axel Engel
- Schott
AG Technical Services, Hattenbergstrasse 10, D-55122 Mainz, Germany
| | - Ute Resch-Genger
- Division
of Biophotonics, Federal Institute for Materials Research and Testing
(BAM), Richard-Willstaetter-Strasse 11, D-12489 Berlin, Germany
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2
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Komma M, Freiberg ATS, Abbas D, Arslan F, Milosevic M, Cherevko S, Thiele S, Böhm T. Applicability of Single-Layer Graphene as a Hydrogen-Blocking Interlayer in Low-Temperature PEMFCs. ACS Appl Mater Interfaces 2024; 16. [PMID: 38676629 PMCID: PMC11082842 DOI: 10.1021/acsami.4c01254] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/22/2024] [Revised: 03/21/2024] [Accepted: 04/18/2024] [Indexed: 04/29/2024]
Abstract
Gas crossover is critical in proton exchange membrane (PEM)-based electrochemical systems. Recently, single-layer graphene (SLG) has gained great research interest due to its outstanding properties as a barrier layer for small molecules like hydrogen. However, the applicability of SLG as a gas-blocking interlayer in PEMs has yet to be fully understood. In this work, two different approaches for transferring SLG from a copper or a polymeric substrate onto PEMs are compared regarding their application in low-temperature PEM fuel cells. The SLG is sandwiched between two Nafion XL membranes to form a stable composite membrane. The successful transfer is confirmed by Raman spectroscopy and in ex situ hydrogen permeation experiments in the dry state, where a reduction of 50% upon SLG incorporation is achieved. The SLG composite membranes are characterized by their performance and hydrogen-blocking ability in a fuel cell setup at typical operating conditions of 80 °C and with fully humidified gases. The performance of the fuel cell incorporating an SLG composite membrane is equal to that of the reference cell when avoiding the direct etching process from a copper substrate, as remnants from copper etching deteriorate the performance of the fuel cell. For both transfer processes, the hydrogen crossover reduction of SLG composite membranes is only 15-19% (1.5 barabs) in the operating fuel cell. Further, hydrogen pumping experiments suggest that the barrier function of SLG impairs the water transport through the membrane, which may affect water management in electrochemical applications. In summary, this work shows the successful transfer of SLG into a PEM and confirms the effective hydrogen-blocking capability of the SLG interlayer. However, the hydrogen-blocking ability is significantly reduced when running the cell at the typical humidified operating conditions of PEM fuel cells, which follows from a combination of reversible interlayer alteration upon humidification and irreversible defect formation upon PEM fuel cell operation.
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Affiliation(s)
- Miriam Komma
- Forschungszentrum
Jülich GmbH, Helmholtz Institute
Erlangen-Nürnberg for Renewable Energy (IEK-11), Cauerstr.1, 91058 Erlangen, Germany
- Department
of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstr.1, 91058 Erlangen, Germany
| | - Anna T. S. Freiberg
- Forschungszentrum
Jülich GmbH, Helmholtz Institute
Erlangen-Nürnberg for Renewable Energy (IEK-11), Cauerstr.1, 91058 Erlangen, Germany
- Department
of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstr.1, 91058 Erlangen, Germany
| | - Dunia Abbas
- Forschungszentrum
Jülich GmbH, Helmholtz Institute
Erlangen-Nürnberg for Renewable Energy (IEK-11), Cauerstr.1, 91058 Erlangen, Germany
- Department
of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstr.1, 91058 Erlangen, Germany
| | - Funda Arslan
- Forschungszentrum
Jülich GmbH, Helmholtz Institute
Erlangen-Nürnberg for Renewable Energy (IEK-11), Cauerstr.1, 91058 Erlangen, Germany
- Department
of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstr.1, 91058 Erlangen, Germany
| | - Maja Milosevic
- Forschungszentrum
Jülich GmbH, Helmholtz Institute
Erlangen-Nürnberg for Renewable Energy (IEK-11), Cauerstr.1, 91058 Erlangen, Germany
- Department
of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstr.1, 91058 Erlangen, Germany
| | - Serhiy Cherevko
- Forschungszentrum
Jülich GmbH, Helmholtz Institute
Erlangen-Nürnberg for Renewable Energy (IEK-11), Cauerstr.1, 91058 Erlangen, Germany
| | - Simon Thiele
- Forschungszentrum
Jülich GmbH, Helmholtz Institute
Erlangen-Nürnberg for Renewable Energy (IEK-11), Cauerstr.1, 91058 Erlangen, Germany
- Department
of Chemical and Biological Engineering, Friedrich-Alexander-Universität Erlangen-Nürnberg, Cauerstr.1, 91058 Erlangen, Germany
| | - Thomas Böhm
- Forschungszentrum
Jülich GmbH, Helmholtz Institute
Erlangen-Nürnberg for Renewable Energy (IEK-11), Cauerstr.1, 91058 Erlangen, Germany
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3
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Peeters S, Kuwahara T, Härtwig F, Makowski S, Weihnacht V, Lasagni AF, Dienwiebel M, Moseler M, Moras G. Surface Depassivation via B-O Dative Bonds Affects the Friction Performance of B-Doped Carbon Coatings. ACS Appl Mater Interfaces 2024; 16:18112-18123. [PMID: 38547870 PMCID: PMC11011640 DOI: 10.1021/acsami.3c18803] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/15/2023] [Revised: 02/27/2024] [Accepted: 03/04/2024] [Indexed: 04/12/2024]
Abstract
Boron doping of diamond-like carbon coatings has multiple effects on their tribological properties. While boron typically reduces wear in cutting applications, some B-doped coatings show poor tribological performance compared with undoped films. This is the case of the tribological tests presented in this work in which an alumina ball is placed in frictional contact with different undoped and B-doped amorphous carbon coatings in humid air. With B-doped coatings, a higher friction coefficient at a steady state with respect to their undoped counterparts was observed. Estimates of the average contact shear stress based on experimental friction coefficients, surface topographies, and Persson's contact theory suggest that the increased friction is compatible with the formation of a sparse network of interfacial ether bonds leading to a mild cold-welding friction regime, as documented in the literature. Tight binding and density functional theory simulations were performed to investigate the chemical effect of B-doping on the interfacial properties of the carbon coatings. The results reveal that OH groups that normally passivate carbon surfaces in humid environments can be activated by boron and form B-O dative bonds across the tribological interfaces, leading to a mild cold-welding friction regime. Simulations performed on different tribological pairs suggest that this mechanism could be valid for B-doped carbon surfaces in contact with a variety of materials. In general, this study highlights the impact that subtle modifications in surface and interface chemistry caused by the presence of impurities can have on macroscopic properties, such as friction and wear.
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Affiliation(s)
- Stefan Peeters
- Fraunhofer
IWM, MiktroTribologie Centrum μTC, Wöhlerstraße 11, 79108 Freiburg, Germany
| | - Takuya Kuwahara
- Fraunhofer
IWM, MiktroTribologie Centrum μTC, Wöhlerstraße 11, 79108 Freiburg, Germany
- Osaka
Metropolitan University, 3-3-138 Sugimoto, Sumiyoshi-ku, 558-8585 Osaka, Japan
| | - Fabian Härtwig
- Fraunhofer
IWS, Winterbergstraße 28, 01277 Dresden, Germany
- Technische
Universität Dresden, Institut für
Fertigungstechnik, George-Bähr-Straße
3c, 01069 Dresden, Germany
| | | | | | - Andrés Fabián Lasagni
- Fraunhofer
IWS, Winterbergstraße 28, 01277 Dresden, Germany
- Technische
Universität Dresden, Institut für
Fertigungstechnik, George-Bähr-Straße
3c, 01069 Dresden, Germany
| | - Martin Dienwiebel
- Fraunhofer
IWM, MiktroTribologie Centrum μTC, Wöhlerstraße 11, 79108 Freiburg, Germany
- Karlsruhe
Institute of Technology (KIT), IAM – Institute for Applied
Materials, Straße am Forum 7, 76131 Karlsruhe, Germany
| | - Michael Moseler
- Fraunhofer
IWM, MiktroTribologie Centrum μTC, Wöhlerstraße 11, 79108 Freiburg, Germany
- University
of Freiburg, Institute of Physics, Herrmann-Herder-Straße 3, 79104 Freiburg, Germany
| | - Gianpietro Moras
- Fraunhofer
IWM, MiktroTribologie Centrum μTC, Wöhlerstraße 11, 79108 Freiburg, Germany
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4
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Kuwahara T, Long Y, Sayilan A, Reichenbach T, Martin JM, De Barros Bouchet MI, Moseler M, Moras G. Superlubricity of Silicon-Based Ceramics Sliding against Hydrogenated Amorphous Carbon in Ultrahigh Vacuum: Mechanisms of Transfer Film Formation. ACS Appl Mater Interfaces 2024; 16:8032-8044. [PMID: 38291784 PMCID: PMC10876050 DOI: 10.1021/acsami.3c16286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2023] [Revised: 12/21/2023] [Accepted: 12/22/2023] [Indexed: 02/01/2024]
Abstract
Tribological interfaces between silicon-based ceramics, such as Si3N4 or SiC, are characterized by high friction and wear in unlubricated conditions. A solution to this problem is to use them in combination with a hydrogenated amorphous carbon (a-C:H) countersurface from which a passivating carbon film is transferred onto the ceramic surface. However, the mechanisms underlying a stable film transfer process and the conditions that favor it remain elusive. Here, we present friction experiments in ultrahigh vacuum in which friction coefficients lower than 0.01 are achieved by sliding Si3N4 against a-C:H with 36 at. % hydrogen but not against a-C:H with 20 at. % hydrogen. Chemical surface analyses confirm that the superlubric interface forms via the transfer of a hydrocarbon nanofilm onto the Si3N4 surface. Quantum-mechanical simulations reveal that a stable passivating a-C:H film can only be transferred if, after initial cold welding of the tribological interface, the plastic shear deformation is localized within the a-C:H coating. This occurs if the yield shear stress for plastic flow of a-C:H is lower than that of the ceramic and of the shear strength of the a-C:H-ceramic interface, i.e., if the a-C:H hydrogen content ranges between ∼30 and ∼50 at. %. While the importance of a relatively high hydrogen content to achieve an efficient passivation of a-C:H surfaces in a vacuum is well-documented, this work reveals how the hydrogen content is also crucial for obtaining a stable a-C:H transfer film. These results can be extended to glass, SiC, and steel, supporting the generality of the proposed mechanism.
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Affiliation(s)
- Takuya Kuwahara
- Fraunhofer
IWM, MikroTribologie Centrum μTC, Wöhlerstraße 11, 79108 Freiburg, Germany
- Department
of Mechanical Engineering, Osaka Metropolitan
University, 3-3-138 Sugimoto, Sumiyoshi-ku, 558-8585 Osaka, Japan
| | - Yun Long
- Laboratory
of Tribology and System Dynamics, CNRS, UMR5513, University of Lyon, Ecole Centrale de Lyon, 69130 Ecully, France
| | - Aslihan Sayilan
- Laboratory
of Tribology and System Dynamics, CNRS, UMR5513, University of Lyon, Ecole Centrale de Lyon, 69130 Ecully, France
| | - Thomas Reichenbach
- Fraunhofer
IWM, MikroTribologie Centrum μTC, Wöhlerstraße 11, 79108 Freiburg, Germany
| | - Jean Michel Martin
- Laboratory
of Tribology and System Dynamics, CNRS, UMR5513, University of Lyon, Ecole Centrale de Lyon, 69130 Ecully, France
| | - Maria-Isabel De Barros Bouchet
- Laboratory
of Tribology and System Dynamics, CNRS, UMR5513, University of Lyon, Ecole Centrale de Lyon, 69130 Ecully, France
| | - Michael Moseler
- Fraunhofer
IWM, MikroTribologie Centrum μTC, Wöhlerstraße 11, 79108 Freiburg, Germany
- Institute
of Physics, University of Freiburg, Hermann-Herder-Straße 3, 79104 Freiburg, Germany
- Freiburg
Materials Research Center, University of
Freiburg, Stefan-Meier-Straße
21, 79104 Freiburg, Germany
- Cluster of
Excellence livMatS, Freiburg Center for Interactive Materials and
Bioinspired Technologies, University of
Freiburg, Georges-Köhler-Allee
105, 79110 Freiburg, Germany
| | - Gianpietro Moras
- Fraunhofer
IWM, MikroTribologie Centrum μTC, Wöhlerstraße 11, 79108 Freiburg, Germany
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5
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Schindler M, Siegerist F, Lange T, Simm S, Bach SM, Klawitter M, Gehrig J, Gul S, Endlich N. A Novel High-Content Screening Assay Identified Belinostat as Protective in a FSGS-Like Zebrafish Model. J Am Soc Nephrol 2023; 34:1977-1990. [PMID: 37752628 PMCID: PMC10703078 DOI: 10.1681/asn.0000000000000235] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Accepted: 09/11/2023] [Indexed: 09/28/2023] Open
Abstract
BACKGROUND FSGS affects the complex three-dimensional morphology of podocytes, resulting in loss of filtration barrier function and the development of sclerotic lesions. Therapies to treat FSGS are limited, and podocyte-specific drugs are unavailable. To address the need for treatments to delay or stop FSGS progression, researchers are exploring the repurposing of drugs that have been approved by the US Food and Drug Administration (FDA) for other purposes. METHODS To identify drugs with potential to treat FSGS, we used a specific zebrafish screening strain to combine a high-content screening (HCS) approach with an in vivo model. This zebrafish screening strain expresses nitroreductase and the red fluorescent protein mCherry exclusively in podocytes (providing an indicator for podocyte depletion), as well as a circulating 78 kDa vitamin D-binding enhanced green fluorescent protein fusion protein (as a readout for proteinuria). To produce FSGS-like lesions in the zebrafish, we added 80 µ M metronidazole into the fish water. We used a specific screening microscope in conjunction with advanced image analysis methods to screen a library of 138 drugs and compounds (including some FDA-approved drugs) for podocyte-protective effects. Promising candidates were validated to be suitable for translational studies. RESULTS After establishing this novel in vivo HCS assay, we identified seven drugs or compounds that were protective in our FSGS-like model. Validation experiments confirmed that the FDA-approved drug belinostat was protective against larval FSGS. Similar pan-histone deacetylase inhibitors also showed potential to reproduce this effect. CONCLUSIONS Using an FSGS-like zebrafish model, we developed a novel in vivo HCS assay that identified belinostat and related pan-histone deacetylase inhibitors as potential candidates for treating FSGS.
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Affiliation(s)
- Maximilian Schindler
- Department of Anatomy and Cell Biology, University Medicine Greifswald, Greifswald, Germany
| | - Florian Siegerist
- Department of Anatomy and Cell Biology, University Medicine Greifswald, Greifswald, Germany
| | - Tim Lange
- Department of Anatomy and Cell Biology, University Medicine Greifswald, Greifswald, Germany
| | - Stefan Simm
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Hamburg, Germany
| | - Sophia-Marie Bach
- Department of Anatomy and Cell Biology, University Medicine Greifswald, Greifswald, Germany
| | - Marianne Klawitter
- Department of Anatomy and Cell Biology, University Medicine Greifswald, Greifswald, Germany
| | | | - Sheraz Gul
- Fraunhofer Institute for Translational Medicine and Pharmacology ITMP, Hamburg, Germany
- Fraunhofer Cluster of Excellence for Immune-Mediated Diseases CIMD, Hamburg, Germany
| | - Nicole Endlich
- Department of Anatomy and Cell Biology, University Medicine Greifswald, Greifswald, Germany
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6
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Pyatenko E, Hauschild D, Mikhnych V, Edla R, Steininger R, Hariskos D, Witte W, Powalla M, Heske C, Weinhardt L. Rb Diffusion and Oxide Removal at the RbF-Treated Ga 2O 3/Cu(In,Ga)Se 2 Interface in Thin-Film Solar Cells. ACS Appl Mater Interfaces 2023; 15. [PMID: 37913778 PMCID: PMC10659031 DOI: 10.1021/acsami.3c11165] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/29/2023] [Revised: 10/07/2023] [Accepted: 10/10/2023] [Indexed: 11/03/2023]
Abstract
We report on the chemical structure of Cu(In,Ga)Se2 (CIGSe) thin-film solar cell absorber surfaces and their interface with a sputter-deposited Ga2O3 buffer. The CIGSe samples were exposed to a RbF postdeposition treatment and an ammonia-based rinsing step, as used in corresponding thin-film solar cells. For a detailed chemical analysis of the impact of these treatments, we employed laboratory-based X-ray photoelectron spectroscopy, X-ray-excited Auger electron spectroscopy, and synchrotron-based hard X-ray photoelectron spectroscopy. On the RbF-treated surface, we find both Rb and F, which are then partly (Rb) and completely (F) removed by the rinse. The rinse also removes Ga-F, Ga-O, and In-O surface bonds and reduces the Ga/(Ga + In) ratio at the CIGSe absorber surface. After Ga2O3 deposition, we identify the formation of In oxides and the diffusion of Rb and small amounts of F into/onto the Ga2O3 buffer layer but no indication of the formation of hydroxides.
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Affiliation(s)
- Elizaveta Pyatenko
- Laboratory
for Applications of Synchrotron Radiation (LAS), Karlsruhe Institute of Technology (KIT), Kaiserstraße 12, Karlsruhe 76131, Germany
- Institute
for Photon Science and Synchrotron Radiation (IPS), Karlsruhe Institute of Technology (KIT), Hermann-v.-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
| | - Dirk Hauschild
- Institute
for Photon Science and Synchrotron Radiation (IPS), Karlsruhe Institute of Technology (KIT), Hermann-v.-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
- Institute
for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology (KIT), Engesserstraße 18/20, Karlsruhe 76128, Germany
- Department
of Chemistry and Biochemistry, University
of Nevada, Las Vegas (UNLV), 4505 Maryland Parkway, Las Vegas, Nevada 89154-4003, United States
| | - Vladyslav Mikhnych
- Institute
for Photon Science and Synchrotron Radiation (IPS), Karlsruhe Institute of Technology (KIT), Hermann-v.-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
| | - Raju Edla
- Institute
for Photon Science and Synchrotron Radiation (IPS), Karlsruhe Institute of Technology (KIT), Hermann-v.-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
| | - Ralph Steininger
- Institute
for Photon Science and Synchrotron Radiation (IPS), Karlsruhe Institute of Technology (KIT), Hermann-v.-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
| | - Dimitrios Hariskos
- Zentrum
für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg
(ZSW), Meitnerstraße
1, Stuttgart 70563, Germany
| | - Wolfram Witte
- Zentrum
für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg
(ZSW), Meitnerstraße
1, Stuttgart 70563, Germany
| | - Michael Powalla
- Zentrum
für Sonnenenergie- und Wasserstoff-Forschung Baden-Württemberg
(ZSW), Meitnerstraße
1, Stuttgart 70563, Germany
| | - Clemens Heske
- Institute
for Photon Science and Synchrotron Radiation (IPS), Karlsruhe Institute of Technology (KIT), Hermann-v.-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
- Institute
for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology (KIT), Engesserstraße 18/20, Karlsruhe 76128, Germany
- Department
of Chemistry and Biochemistry, University
of Nevada, Las Vegas (UNLV), 4505 Maryland Parkway, Las Vegas, Nevada 89154-4003, United States
| | - Lothar Weinhardt
- Institute
for Photon Science and Synchrotron Radiation (IPS), Karlsruhe Institute of Technology (KIT), Hermann-v.-Helmholtz-Platz 1, Eggenstein-Leopoldshafen 76344, Germany
- Institute
for Chemical Technology and Polymer Chemistry (ITCP), Karlsruhe Institute of Technology (KIT), Engesserstraße 18/20, Karlsruhe 76128, Germany
- Department
of Chemistry and Biochemistry, University
of Nevada, Las Vegas (UNLV), 4505 Maryland Parkway, Las Vegas, Nevada 89154-4003, United States
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7
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Ganesan P, Soans M, Cambaz MA, Zimmermanns R, Gond R, Fuchs S, Hu Y, Baumgart S, Sotoudeh M, Stepien D, Stein H, Groß A, Bresser D, Varzi A, Fichtner M. Fluorine-Substituted Halide Solid Electrolytes with Enhanced Stability toward the Lithium Metal. ACS Appl Mater Interfaces 2023; 15:38391-38402. [PMID: 37527285 PMCID: PMC10437042 DOI: 10.1021/acsami.3c03513] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/10/2023] [Accepted: 06/28/2023] [Indexed: 08/03/2023]
Abstract
The high ionic conductivity and good oxidation stability of halide-based solid electrolytes evoke strong interest in this class of materials. Nonetheless, the superior oxidative stability compared to sulfides comes at the expense of limited stability toward reduction and instability against metallic lithium anodes, which hinders their practical use. In this context, the gradual fluorination of Li2ZrCl6-xFx (0 ≤ x ≤ 1.2) is proposed to enhance the stability toward lithium-metal anodes. The mechanochemically synthesized fluorine-substituted compounds show the expected distorted local structure (M2-M3 site disorder) and significant change in the overall Li-ion migration barrier. Theoretical calculations reveal an approximate minimum energy path for Li2ZrCl6-xFx (x = 0 and 0.5) with an increase in the Li+ migration energy barrier for Li2ZrCl5.5F0.5 in comparison to Li2ZrCl6. However, it is found that the fluorine-substituted compound exhibits substantially lower polarization after 800 h of lithium stripping and plating owing to enhanced interfacial stability against the lithium metal, as revealed by density functional theory and ex situ X-ray photoelectron spectroscopy, thanks to the formation of a fluorine-rich passivating interphase.
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Affiliation(s)
- Priya Ganesan
- Helmholtz
Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, Germany
- Karlsruhe
Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Mervyn Soans
- Helmholtz
Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, Germany
- Karlsruhe
Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Musa Ali Cambaz
- Helmholtz
Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, Germany
- Karlsruhe
Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Ramon Zimmermanns
- Karlsruhe
Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Ritambhara Gond
- Department
of Chemistry-Ångström Laboratory, Uppsala University, P.O. Box 538, 751 21 Uppsala, Sweden
| | - Stefan Fuchs
- Karlsruhe
Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Yang Hu
- Helmholtz
Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, Germany
- Karlsruhe
Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Sebastian Baumgart
- Institute
of Theoretical Chemistry, Ulm University, Oberberghof 7, 89081 Ulm, Germany
| | - Mohsen Sotoudeh
- Institute
of Theoretical Chemistry, Ulm University, Oberberghof 7, 89081 Ulm, Germany
| | - Dominik Stepien
- Helmholtz
Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, Germany
- Karlsruhe
Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Helge Stein
- Karlsruhe
Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Axel Groß
- Helmholtz
Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, Germany
- Institute
of Theoretical Chemistry, Ulm University, Oberberghof 7, 89081 Ulm, Germany
| | - Dominic Bresser
- Helmholtz
Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, Germany
- Karlsruhe
Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Alberto Varzi
- Helmholtz
Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, Germany
- Karlsruhe
Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany
| | - Maximilian Fichtner
- Helmholtz
Institute Ulm (HIU), Helmholtzstrasse 11, 89081 Ulm, Germany
- Karlsruhe
Institute of Technology (KIT), P.O. Box 3640, 76021 Karlsruhe, Germany
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8
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Stroyuk O, Raievska O, Sebastia-Luna P, Huisman BAH, Kupfer C, Barabash A, Hauch J, Bolink HJ, Brabec CJ. Highly Luminescent Transparent Cs 2Ag x Na 1-x Bi y In 1-y Cl 6 Perovskite Films Produced by Single-Source Vacuum Deposition. ACS Mater Lett 2023; 5:596-602. [PMID: 36776692 PMCID: PMC9906732 DOI: 10.1021/acsmaterialslett.3c00034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 01/09/2023] [Accepted: 01/17/2023] [Indexed: 06/18/2023]
Abstract
Thermal deposition of halide perovskites as a universal and scalable route to transparent thin films becomes highly challenging in the case of lead-free double perovskites, requiring the evaporation dynamics of multiple metal halide sources to be balanced or a single-phase precursor preliminary synthesized to achieve a reliable control over the composition and the phase of the final films. In the present Letter, the feasibility of the single-source vacuum deposition of microcrystalline Cs2Ag x Na1-x Bi y In1-y Cl6 double perovskites into corresponding transparent nanocrystalline films while preserving the bulk spectral and structural properties is shown. The perovskite films produced from the most emissive powders with x = 0.40 and y = 0.01 revealed a photoluminescence quantum yield of 85%, highlighting thermal evaporation as a promising approach to functional perovskite-based optical materials.
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Affiliation(s)
- Oleksandr Stroyuk
- Forschungszentrum
Jülich GmbH, Helmholtz-Institut Erlangen
Nürnberg für Erneuerbare Energien (HI ERN), 91058 Erlangen, Germany
| | - Oleksandra Raievska
- Forschungszentrum
Jülich GmbH, Helmholtz-Institut Erlangen
Nürnberg für Erneuerbare Energien (HI ERN), 91058 Erlangen, Germany
| | - Paz Sebastia-Luna
- Insituto
de Ciencia Molecular, Universidad de Valencia, Catedrático J. Beltrán
2, 46980 Paterna, Spain
| | - Bas A. H. Huisman
- Insituto
de Ciencia Molecular, Universidad de Valencia, Catedrático J. Beltrán
2, 46980 Paterna, Spain
| | - Christian Kupfer
- Friedrich-Alexander-Universität
Erlangen-Nürnberg, Materials for Electronics
and Energy Technology (i-MEET), Martensstrasse 7, 91058 Erlangen, Germany
| | - Anastasia Barabash
- Friedrich-Alexander-Universität
Erlangen-Nürnberg, Materials for Electronics
and Energy Technology (i-MEET), Martensstrasse 7, 91058 Erlangen, Germany
| | - Jens Hauch
- Forschungszentrum
Jülich GmbH, Helmholtz-Institut Erlangen
Nürnberg für Erneuerbare Energien (HI ERN), 91058 Erlangen, Germany
- Friedrich-Alexander-Universität
Erlangen-Nürnberg, Materials for Electronics
and Energy Technology (i-MEET), Martensstrasse 7, 91058 Erlangen, Germany
| | - Henk J. Bolink
- Insituto
de Ciencia Molecular, Universidad de Valencia, Catedrático J. Beltrán
2, 46980 Paterna, Spain
| | - Christoph J. Brabec
- Forschungszentrum
Jülich GmbH, Helmholtz-Institut Erlangen
Nürnberg für Erneuerbare Energien (HI ERN), 91058 Erlangen, Germany
- Friedrich-Alexander-Universität
Erlangen-Nürnberg, Materials for Electronics
and Energy Technology (i-MEET), Martensstrasse 7, 91058 Erlangen, Germany
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