SPM-Lab
The Scanning Probe Microscopy Laboratory was founded in 2017 by Alex Redinger in a framework of an FNR consolidator grant.
The group focuses on the study of the surface of two types of thin film solar cells, namely Cu(In,Ga)Se2 (CIGSe) and hybrid organic inorganic perovskites, as well as 2D materials. We combine scanning probe microscopy techniques in ultra-high vacuum such as Scanning Tunneling Spectroscopy (STS) and Kelvin Probe Force Microscopy (KPFM) and photoluminescence imaging (PL/TRPL) to access the electrostatic and optoelectronic properties at the surface of semiconductors.
Latest News
We have uploaded a new preprint on arXiv where we investigated the impact of KPFM operation modes and environment on grain boundary band bending in perovskite and Cu(In,Ga)Se2 solar cells. You can find the version here: https://arxiv.org/abs/2104.02977
We are recruiting on Postdoctoral researcher, for the upgrade of our current infrastructure with a XPS/UPS/AES system to study halide perovskite absorbers and interfaces. More information: https://bit.ly/3dIWiXl
Happy new year everyone ! The SPM Lab wishes you great successes in your future work and life. To start off the new year well, you can read our new paper entitled Co-evaporation of CH3NH3PbI3: How Growth Conditions Impact Phase Purity, Photostriction, and Intrinsic Stability, out in ACS Applied Materials and Ineterfaces. Congratulations to everyone involveld. You can access it via: https://pubs.acs.org/doi/10.1021/acsami.0c19038
Besides, our XPS setup has now been installed in our UHV SPM and can now be used. Looking forward for the UPS extension !
We are recruiting one PhD student for the preparation by co-evaporation of perovskite films and solar cells as well as their characterization using scanning probe microscopy and photoluminscence analysis. Follow this link for more information and to apply: http://emea3.mrted.ly/2kwan
Recent Publications
April 2021
The impact of Kelvin probe force microscopy operation modes and environment on grain boundary band bending in perovskite and Cu(In,Ga)Se2 solar cells
Evandro M. Lanzoni, Thibaut Gallet, Conrad Spindler, Omar Ramirez, Chrisitan Kameni Boumenou, Susanne Siebentritt and Alex Redinger
arXiv, preprint
January 2021
Co-evaporation of CH3NH3PbI3: How Growth Conditions Impact Phase Purity, Photostriction, and Intrinsic Stability
Thibaut Gallet, Ricardo G. Poeira, Evandro M. Lanzoni, Tobias Abzieher, Ulrich W. Paetzold and Alex Redinger
ACS Appl. Mater. Interfaces 2021, 13, 2, 2642–2653
December 2020
Electronic and compositional properties of the rear‐side of stoichiometric CuInSe2 absorbers
Christian Kameni Boumenou, Amala Elizabeth, Finn Babbe, Alice Debot, Harry Mönig and Alex Redinger
Prog Photovolt Res Appl. 2020; 1– 11
April 2020
Passivation of the CuInSe2 surface via cadmium pre-electrolyte treatment
Christian Kameni Boumenou, Finn Babbe, Amala Elizabeth, Michele Melchiorre, Conrad Spindler, Jérome Guillot, Harry Mönig, Susanne Siebentritt and Alex Redinger
Phys. Rev. Materials 4 (4), 045405
The MASSENA Young Scientist Conference 2021
24.06.2021 - 25.06.2021
Sport Hotel Leweck, L-9378 Lipperscheid, Luxembourg
Energy Seminar: Flexibility for the Energy System of the Future
Prof. Ferdi Schüth, Director of the Max-Planck-Institut für Kohlenforschung
30.06.2021
17:00 - 18:30