2025 - Chair of Applied Physics and Semiconductor Spectroscopy

Publications 2025

25_21
Bottom-Up strategy to develop ultrathin active layers by atomic layer deposition for room temperature hydrogen sensors
C. Morales, R. Tschammer, D. Guttmann, C. Alvarado, C. Ruffert, K. Henkel, C. Wenger, J. I. Flege
Proceedings of MikroSystemTechnik Kongress 2025 : Mikroelektronik, Mikrosystemtechnik und ihre Anwendungen - Nachhaltigkeit und Technologiesouveränität. VDE e.V. (Ed.), VDE VERLAG GmbH, Berlin, 2025, ISBN: 978-3-8007-6614-7, pp. 71-73.
Online

25_20
Effects of temperature and light on Ce/SnO₂ thin-film hydrogen sensors
A. Mudundi, A. Kalra, R. Tschammer, C. Morales, J. I. Flege, I. A. Fischer, C. Alvarado, C. Wenger
Proceedings of MikroSystemTechnik Kongress 2025 : Mikroelektronik, Mikrosystemtechnik und ihre Anwendungen - Nachhaltigkeit und Technologiesouveränität. VDE e.V. (Ed.), VDE VERLAG GmbH, Berlin, 2025, ISBN: 978-3-8007-6614-7, pp. 20-22.
Online

25_19
Transition metal dichalcogenide surfaces as scattering targets in spin-polarization detectors: A case study on MoS₂
C. Angrick, A. Henriksen, N. Edossa, A. Reimann, M. Ewert, L. Buß, J. Falta, J. I. Flege, M. Donath
Physical Review B 112 (2025) 235408
Online

25_18
Crystallographic Changes Mediated by Copper Migration from Hole Transporting Layer into CsPbBr₃ Perovskite
K. Gawlińska-Nęcek, P. Dąbczyński, P. Nuckowski, Z. Starowicz, M. Kot, P. Panek, J. I. Flege
Journal of Physical Chemistry C 129 (2025) 19410-19420
Online (DOI)

25_17
Growth and oxidation of ultra-thin Pt-Sn layers on Pt(111) by molecular and atomic oxygen
N. Braud, L. Buß, L. Merte, H. Wallander, J.-O. Krisponeit, T. Schmidt, E. Lundgren, J. I. Flege, J. Falta
Ultramicroscopy 278 (2025) 114243
Online (DOI)

25_16
Unique properties of the electronic structure of alluaudite sodium iron sulfate cathode material and the impact on its electrochemical performance
J. Molenda, J. Tobola, A. Milewska, A. Budziak, W. Zając, M. Wolczko, K. Dziedzic-Kocurek, M. Nowak, K. Kałahurska, N. Imam, K. Henkel, J. I. Flege, E. Zschech
Acta Materialia 301 (2025) 121582
Online (DOI)

25_15
The relationship between Sm alloying and structure sensitivity of ceria (111)- and (100)-oriented nanoislands on Cu (111)
E. Pożarowska, L. Pleines, M. J. Prieto, L. C. Tănase, L. de Souza Caldas, A. Tiwari, T. Schmidt, J. Falta, C. Morales, J. I. Flege
Physical Chemistry Chemical Physics 27 (2025) 15691-15703
Online (DOI)

25_14
Rise and fall of 1T-TaS₂: Epitaxial growth of monolayer TaS₂ on Au(111)
L. Buß, C. Sulaiman, R. Sánchez-Barquilla, I. Cojocariu, M. Szpytma, T. O. Menteş, A. Locatelli, J. Falta, J. I. Flege
Physical Review Materials 9 (2025) 074006
Online (DOI)

25_13
In-Situ and Operando Measurements for the Characterization of Next-Generation Sensor Materials
R. Tschammer, D. Guttmann, C. Morales, C. Tiebe, K. Henkel, J. I. Flege
Proceedings of Sensor and Measurement Science International 2025. AMA Service GmbH (Ed.), Wunstorf, 2025, ISBN 978-3-910600-06-5, pp. 292-293
Online (DOI)

25_12
Hydrogen Sensing via Heterolytic H₂ Activation at Room Temperature by Atomic Layer Deposited Ceria
C. Morales, R. Tschammer, E. Pożarowska, J. Kosto, I. J. Villar-Garcia, V. Pérez-Dieste, M. Favaro, D. E. Starr, P. Kapuścik, M. Mazur, D. Wojcieszak, J. Domaradzki, C. Alvarado, C. Wenger, K. Henkel, J. I. Flege
ChemSusChem 18 (2025) e202402342
Online (DOI)
Selected as Front Cover

25_11
Heat transfer analysis of a tube-in-tube steam reformer for the application of MGT-SOFC hybrid process
T. Xie, F. Rachow, Rakhi, H. P. Berg, K. Höschler
Numerical Heat Transfer, Part A: Applications 86 (2025) 4841-4859
Online (DOI)

25_10
Mitigating the amorphization of perovskite solar cells by using atomic layer deposition alumina
M. Kedia, C. Das, M. Kot, Y. Yalcinkaya, W. Zuo, K. T. Tanko, P. Matvija, M. Ezquer, I. Cornago, W. Hempel, F. Kauffmann, P. Plate, M. Lira-Cantu, S. A. L. Weber, M. Saliba
Energy & Environmental Science 18 (2025) 5250-5263
Online (DOI)
selected as Front Cover

25_09
Rubidium intercalation in epitaxial monolayer graphene
L. Ferbel, S. Veronesi, T. O. Mentes, L. Buß, A. Rossi, N. Mishra, C. Coletti, J. I. Flege, A. Locatelli, S. Heun
Nanoscale 17 (2025) 12465-12472
Online (DOI)

25_08
Photosensitivity and Carrier Densities of Perovskite Solar Absorbers
M. Kot, K. Gawlińska-Nęcek, E. Pożarowska, K. Henkel, D. Schmeißer
Advanced Science 12 (2025) 2412711
Online (DOI)

25_07
Prospects of improving efficiency and stability of hybrid perovskite solar cells by alumina ultrathin films
M. Kot, K. Gawlińska-Nęcek, K. Henkel, J. I. Flege
Small 21 (2025) 2408435
Online (DOI)
selected as Frontispiece Cover

25_06
Stabilization of Ce³⁺ cations via U-Ce charge transfer in mixed oxides: consequences on the thermochemical water splitting to hydrogen
C. Morales, R. Tschammer, T. Gouder, Y. Choi, D. Anjum, A. Baunthiyal, J.-O. Krisponeit, J. Falta, J. I. Flege, H. Idriss
Journal of Physics: Energy 7 (2025) 025012
Online (DOI)

25_05
Reaction Mechanism and Kinetic Model of the Transformation of Iron Monosulfide Thin Films into Pyrite Films
C. Morales, A. Pascual, D. Leinen, G. Luna-López, J. R. Ares, J. I. Flege, L. Soriano, I. J. Ferrer, C. Sanchez
Journal of Physical Chemistry C 129 (2025) 4724-4737
Online (DOI)

25_04
In Situ X-Ray Photoelectron Spectroscopy Study of Atomic Layer Deposited Cerium Oxide on SiO₂: Substrate Influence on the Reaction Mechanism During the Early Stages of Growth
C. Morales, M. Gertig, M. Kot, C. Alvarado, M. A. Schubert, M. H. Zoellner, C. Wenger, K. Henkel, J. I. Flege
Advanced Materials Interfaces 12 (2025) 2400537
Online (DOI)
selected as Front Cover

25_03
High-Temperature Growth of CeO_x on Au(111) and Behavior under Reducing and Oxidizing Conditions
R. Tschammer, L. Buß, E. Pożarowska, C. Morales, S. D. Senanayake, M. J. Prieto, L. C. Tănase, L. de Souza Caldas, A. Tiwari, T. Schmidt, M. A. Niño, M. Foerster, J. Falta, J. I. Flege
Journal of Physical Chemistry C 129 (2025) 3583-3594
Online (DOI)

25_02
Internal chemical potential in mixed covalent-ionic photosensitive systems
M. Kot, K. Henkel, D. Schmeißer
Journal of Vacuum Science and Technology A 43 (2025) 012802
Online (DOI)
selected as Editor's Pick
This article (accepted version) may be downloaded here for personal use only. Any other use requires prior permission of the author and AIP Publishing.

25_01
Hexagons on Rectangles: Epitaxial graphene on Ru(\(10\bar{1}0\))
L. Buß, G. Zamborlini, C. Sulaiman, M. Ewert, M. Cinchetti, J. Falta, J. I. Flege
Carbon 231 (2025) 119600
Online (DOI)

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