A Photonic Atom Probe Study of Thermal Effects at the Nanosecond and Nanometer scale
The thermal effect of a subpicosecond laser pulse impinging on a nanoscale semiconductor structure is evaluated by analyzing the photoluminescence (PL) from samples characterized in situ by atom probe tomography. By examining time-resolved PL and ion time-of-flight spectra, we establish the correct time scale of transient processes─carrier recombination and carrier-phonon scattering─following a laser pulse. This approach allows for analysis of peak energies and bandwidths from temperature- and laser intensity-dependent PL spectra, enabling the estimation of an effective temperature within a few hundred picoseconds after the laser pulse. The analysis was conducted on ZnO/(Mg,Zn)O quantum well heterostructures, where the results can be readily interpreted using ZnO's specific heat capacity and its temperature dependence.
Authors
- Maxime Hugues (ORCID: https://orcid.org/0000-0001-6457-7421)
- Lorenzo Rigutti (ORCID: https://orcid.org/0000-0001-9141-7706)
- Jonathan Houard (ORCID: https://orcid.org/0000-0001-7244-205X)
- Samba Ndiaye (ORCID: https://orcid.org/0000-0001-8913-4862)
- Angela Vella (ORCID: https://orcid.org/0000-0003-1501-159X)
- Subodh K. Gautam (ORCID: https://orcid.org/0000-0002-6041-3451)
- J.‐M. Chauveau (ORCID: https://orcid.org/0000-0002-6860-7744)
- Denis Lefebvre (ORCID: https://orcid.org/0000-0003-1575-1889)
Institutions
- Centre National de la Recherche Scientifique (FR)
- Université Paris-Saclay (FR)
- Groupe d’Étude de la Matière Condensée (FR)
- Groupe de Physique des Matériaux (FR)
- Université de Rouen Normandie (FR)
Publication Details
- Journal
- Nano Letters
- Published
- 2025-05-14
- DOI
- https://doi.org/10.1021/acs.nanolett.5c01289
- Primary Topic
- Advanced Materials Characterization Techniques
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- Agence Nationale de la Recherche
- Région Normandie
- European Regional Development Fund