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
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08/06/2021
We warmly welcome our first PostDoc, Jeremy Hieulle. He was previously a PostDoc in the groups of José Ignacio Pascual at CIC nanoGUNE, Spain and Yabing Qi at OIST, Japan. Within our group, he will work on upgrading the UHV SPM/XPS system with UPS and study halide perovskites by combining these different techniques. We are happy to have you with us Jeremy !
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15/04/2021
We warmly welcome Robert Himelrick in our group, who will be our new R&D-mechanical engineer and technician. Looking forward to setting up new experiments and tools !
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08/04/2021
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
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06/04/2021
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
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07/01/2021
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 !
Recent Publications
Evandro M. Lanzoni, Thibaut Gallet, Conrad Spindler, Omar Ramirez, Chrisitan Kameni Boumenou, Susanne Siebentritt and Alex Redinger
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
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
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