Forschungsschwerpunkte

Projekte

Kompetenzen

Responsible scientist for analytical scanning electron microscopy and the Application Laboratory Time-Resolved Cathodoluminescence Spectroscopy. Collaborating with many internal and external partners, Jonas has worked on a broad range of materials spanning from AlN, GaN and hBN for UV applications, over (In,Ga)N and Ga(P,N) in the visible spectral range to (In,Ga)As and In(As,Sb) in the near infrared. He has collected extensive experience in correlating different spatially-resolved techniques, in particular on semiconductor nanowires. Notable work also includes the role of extended defects, such as stacking faults and dislocations, in GaN and carrier diffusion in this material system.

Publikationen

  1. Titel

    Nucleation and faceting in (001) r-GeO2 heteroepitaxy on r-TiO2 by metalorganic vapor phase epitaxy

    Author
    G. Cicconi, M. Bosi, F. Mezzadri, A. Ugolotti, I. Cora, L. Seravalli, H. Tornatzky, J. Lähnemann, M. R. Wagner, P. Bhatt, P. K. Thakur, T.-L. Lee, A. Regoutz, A. Baraldi, D. Bersani, L. Cademartiri, A. Parisini, B. Pécz, L. Miglio, R. Fornari, P. Mazzolini
    Quelle
    Appl. Surf. Sci., 725, 165788 (2025)
    DOI:
    10.1016/j.apsusc.2025.165788 (PDI-ID: 3140)
  2. Titel

    Cubic InGaN for red emission: Improved phase stability and emission properties by metal-modulated epitaxy

    Author
    S. A. Jentsch, M. F. Zscherp, A. Campbell, M. Stein, M. Chia, D. J. As, J. Lähnemann, S. Chatterjee, J. Schörmann
    Quelle
    J. Appl. Phys., 138, 225702 (2025)
    DOI:
    10.1063/5.0305390 (PDI-ID: 3133)
  3. Titel

    Corrigendum to “Dislocation correlations in GaN epitaxial films revealed by EBSD and XRD” [Acta Materialia 297 (2025) 121357]

    Author
    V. Kaganer, D. Spallek, P. John, O. Brandt, J. Lähnemann
    Quelle
    Acta Mater., 302, 121671 (2025)
    DOI:
    10.1016/j.actamat.2025.121671 (PDI-ID: 3129)
  4. Titel

    Optical response of ultrathin GaP nanoantenna with zincblende-to-wurtzite crystal phase transitions

    Author
    E. N. T. Diak, J. Lähnemann, A. Moréac, J.-P. Landesman, K. Loeto, R. R. LaPierre
    Quelle
    Cryst. Growth Des., 25, 9312-9321 (2025)
    DOI:
    10.1021/acs.cgd.5c01111 (PDI-ID: 3121)
  5. Titel

    From (In,Ga)N top-down nanowires to pseudo-substrates

    Author
    J. Kang, H. Zhang, A. Campbell, J. Lähnemann, O. Brandt, L. Geelhaar
    Quelle
    Proc. SPIE, 13582, 135820B (2025)
    DOI:
    10.1117/12.3067374 (PDI-ID: 3098)