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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

Recent Publications

August 2023

Mitigating the Heterointerface Driven Instability in Perovskite Photovoltaics

Anurag Krishna, Viktor Skorjanc, Mathias Dankl, Jeremy Hieulle, Himanshu Phirke, Ajay Singh, Essa A Alharbi, Hong Zhang, Felix Eickemeyer, Shaik M Zakeeruddin, GN Manjunatha Reddy, Alex Redinger, Ursula Rothlisberger, Michael Gratzel, Anders Hagfeldt

ACS Energy Lett. 2023, 8, 8, 3604–3613

May 2023

Light Makes Right: Laser Polishing for Surface Modification of Perovskite Solar Cells

Mayank Kedia, Monika Rai, Himanshu Phirke, Clara A Aranda, Chittaranjan Das, Vladimir Chirvony, Stephan Boehringer, Małgorzata Kot, Mahdi Malekshahi Byranvand, Jan Ingo Flege, Alex Redinger, Michael Saliba

ACS Energy Lett. 2023, 8, 6, 2603–2610

May 2023

Nanoscale Surface Analysis Reveals Origins of Enhanced Interface Passivation in RbF Post Deposition Treated CIGSe Solar Cells

Christian Kameni Boumenou, Himanshu Phirke, Jonathan Rommelfangen, Jean‐Nicolas Audinot, Shiro Nishiwaki, Tom Wirtz, Romain Carron, Alex Redinger

Adv. Funct. Mater.2023, 33, 2300590

August 2022

Coevaporation Stabilizes Tin-Based Perovskites in a Single Sn-Oxidation State

Ajay Singh, Jeremy Hieulle, Joana Ferreira Machado, Sevan Gharabeiki, Weiwei Zuo, Muhammad Uzair Farooq, Himanshu Phirke, Michael Saliba, Alex Redinger

Nano Letters 22 (17), 7112-7118

July 2022

Surface Passivation and Detrimental Heat-Induced Diffusion Effects in RbF-Treated Cu(In,Ga)Se2 Solar Cell Absorbers

Amala Elizabeth, Sudhir K Sahoo, Himanshu Phirke, Tim Kodalle, Thomas D Kühne, Jean-Nicolas Audinot, Tom Wirtz, Alex Redinger, Christian A Kaufmann, Hossein Mirhosseini, Harry Mönig

ACS Applied Materials & Interfaces 14 (29), 34101-34112

June 2022

The impact of strain on growth mode in chemical vapor deposited mono- and few-layer MoS2

J Rommelfangen, S Reichardt, V Ben Chu, L Wirtz, PJ Dale, A Redinger

AIP Advances 12 (6), 065010

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