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

  • 19/11/2020

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
  • 19/10/2020

Another group member joins us in the beginning of this semester. It's Joana and she will be doing her PhD on the fabrication and characterization of tin-based perovskites. Good luck !
  • 04/05/2020

Two good news this week. Firstly, we warmly welcome our new PhD student Anjala Jayaraj. She will be working on the fabrication of Sn-based perovskites and their characterizations. Secondly, we can finally go back to our labs and continue our measurements where we left them off !
  • 15/04/2020

Our new paper on the passivation of the CuInSe2 surface via cadmium pre-electrolyte treatment is out in Physics Review Materials. Congratulations to Christian and everyone involveld. You can access it via: https://journals.aps.org/prmaterials/abstract/10.1103/PhysRevMaterials.4.045405
  • 15/09/2020

We warmly welcome our two new Master students, Joé Seil, who will work on the fabrication of MAPI devices using co-evaporation and self-assembled monolayer, and Uzair Farooq, who will work on the characterization of 2D materials (MoS2) using KPFM. Lastly, we say goodbye to Ricardo, who will do his PhD thesis with Professor Dr. Philip Dale. Congratulations !

Recent Publications

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 


February 2020

Effects of Annealing and Light on Co-evaporated Methylammonium Lead Iodide Perovskites using Kelvin Probe Force Microscopy in Ultra-High Vacuum

Thibaut Gallet, Evandro M. Lanzoni and Alex Redinger

2019 IEEE 46th Photovoltaic Specialists Conference (PVSC), Chicago, IL, USA, 2019, pp. 1477-1482.

Surface characterization of epitaxial Cu-rich CuInSe2 absorbers

Evandro M. Lanzoni, Conrad Spindler, Omar Ramirez, Michele Melchiorre, Susanne Siebentritt and Alex Redinger

2019 IEEE 46th Photovoltaic Specialists Conference (PVSC), Chicago, IL, USA, 2019, pp. 2346-2350

September 2019 

Fermi-level pinning in methylammonium lead iodide perovskites

Thibaut Gallet, David Grabowski, Thomas Kirchartz and Alex Redinger

Nanoscale, 2019, 11, 16828-16836 

Upcoming Events

Energy Seminar: Flexibility for the Energy System of the Future
Prof. Ferdi Schüth, Director of the Max-Planck-Institut für Kohlenforschung
17:00 - 18:30

The University of


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