Atomic Force Microscopy Investigation of the In Situ‐Formed Oxide Layer at the Interface of Al<sub>2</sub>O<sub>3</sub>−C/Steel Melt in Terms of Adhesion Force and Roughness in a Model System

Ditscherlein, Lisa; Zienert, Tilo; Dudczig, Steffen; Aneziris, Christos G.; Peuker, Urs A.

doi:10.1002/adem.202100634

Cited by 3 publications

(1 citation statement)

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“…External bias is known to induce film degradation; , however, there is no visible film damages present on the topographical images. As the RMS roughness of fresh perovskite films are in similar range of 7.4–13.6 nm (Table ), adhesion force of different perovskite types can be compared. , To evaluate the influence of the external reverse bias potential on the adhesion force as a whole, the average value was used for the comparison. The results indicate that the bias greatly impacts freshly-made samples rather than the 8-day old samples (Figure A,B).…”

Section: Resultsmentioning

confidence: 99%

Mechanical and Electrical Comparative Studies of Widely Utilized Solar Perovskite Thin Films via Scanning Probe Microscopy

Pansa-Ngat,

Kamnoedmanee,

Semapet

et al. 2024

ACS Appl. Energy Mater.

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Most perovskite publications explore only one or two perovskite formulas to achieve good performance and/or stability. In contrary, this work aims to provide fair comparisons among different popularized perovskite recipes (MAPbI 3 , FAPbI 3 , FA 0.1 MA 0.9 PbI 3 , Cs 0.2 FA 0.8 PbI 2.25 Br 0.75 , Cs 0.05 FA 0.81 MA 0.14 PbI 2.55 Br 0.45 , and (PEA) 2 MA 39 Pb 40 I 121 ) on the basis of mechanical and electrical properties together with deformation and stability via force curve analysis, photoconductive atomic force microscopy (c-AFM), Kelvin probe force microscopy (KPFM), and Raman spectroscopy. Using the c-AFM approach together with cantilever-sample interaction, the nanoscale Young's modulus, adhesion force, and photogenerated current mapping with and without reverse bias potential of the six distinct perovskites are investigated. Sheet resistance and hardness test results further expand thin films' physical comprehension, relating to future applications in flexible electronics. Additionally, the work function distributions of perovskites are explored via KPFM. Surface terminations, along with lattice contraction and octahedral tilting, cause changes in work function. Lastly, c-AFM was used to investigate the chargemorphology evolution under heat treatment. Triple-cation perovskites present themselves as the most robust system by striking the right balance between structural deformation and cationic rotation, with good current stability under heat and high resistance to plastic deformation.

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Section: Resultsmentioning

confidence: 99%

Mechanical and Electrical Comparative Studies of Widely Utilized Solar Perovskite Thin Films via Scanning Probe Microscopy

Pansa-Ngat,

Kamnoedmanee,

Semapet

et al. 2024

ACS Appl. Energy Mater.

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Metal Melt Filtration in a Water-Based Model System Using a Semi-automated Pilot Plant: Experimental Methods, Influencing Factors, Models

Daus,

Ditscherlein,

Hoppach

et al. 2024

Springer Series in Materials Science

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Even though ceramic foam filters for metal melt filtration have been used in the casting industry for many decades, the filtration mechanisms have not yet been satisfactorily determined. Due to the opaqueness of the melt and the need for high operating temperatures as well as the complexity of the aluminum casting process, filtration experiments are expensive and a detailed insight into the filtration process is hardly achievable. However, the analysis by means of a model system contributes to an essential understanding of the processes taking place. Metal melt systems are characterized by their high surface tension resulting in poor wettability of the solid surfaces in contact with the liquid melt. Therefore, the model system needs to exhibit both similar flow characteristics and wetting properties as the melt system to obtain reliable results. In this study, water was used as the model liquid and the wetting properties of the solid surfaces have been modified to mimic the characteristic wetting behavior of the melt-filter interface. The influence of filter and particle properties as well as process parameters on the filtration efficiency of ceramic foam filters have been investigated. In order to minimize possible overlapping effects in the determination of individual parameters influencing the separation efficiency, care was taken to vary only one parameter, so that the filtration is only dependent on one variable. Besides water-based filtration experiments, it is also possible to have a closer look on interaction forces between inclusion particles and the filter wall and how a higher filtration efficiency can be achieved. Here, too, a water-based model system is beneficial due to the same issues of available devices and costs.

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Open-cell ceramic foam filters for melt filtration: Processing, characterization, improvement and application

Dai,

Voigt,

Storti

et al. 2024

Journal of Materials Research and Technology

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Atomic Force Microscopy Investigation of the In Situ‐Formed Oxide Layer at the Interface of Al₂O₃−C/Steel Melt in Terms of Adhesion Force and Roughness in a Model System

Abstract: The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adem.202100634.

Cited by 3 publications

References 40 publications

Mechanical and Electrical Comparative Studies of Widely Utilized Solar Perovskite Thin Films via Scanning Probe Microscopy

Mechanical and Electrical Comparative Studies of Widely Utilized Solar Perovskite Thin Films via Scanning Probe Microscopy

Metal Melt Filtration in a Water-Based Model System Using a Semi-automated Pilot Plant: Experimental Methods, Influencing Factors, Models

Open-cell ceramic foam filters for melt filtration: Processing, characterization, improvement and application

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Atomic Force Microscopy Investigation of the In Situ‐Formed Oxide Layer at the Interface of Al2O3−C/Steel Melt in Terms of Adhesion Force and Roughness in a Model System

Abstract: The ORCID identification number(s) for the author(s) of this article can be found under https://doi.org/10.1002/adem.202100634.

Cited by 3 publications

References 40 publications

Mechanical and Electrical Comparative Studies of Widely Utilized Solar Perovskite Thin Films via Scanning Probe Microscopy

Mechanical and Electrical Comparative Studies of Widely Utilized Solar Perovskite Thin Films via Scanning Probe Microscopy

Metal Melt Filtration in a Water-Based Model System Using a Semi-automated Pilot Plant: Experimental Methods, Influencing Factors, Models

Open-cell ceramic foam filters for melt filtration: Processing, characterization, improvement and application

Contact Info

Product

Resources

About

Atomic Force Microscopy Investigation of the In Situ‐Formed Oxide Layer at the Interface of Al₂O₃−C/Steel Melt in Terms of Adhesion Force and Roughness in a Model System