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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

  • 31/12/2022

Happy New Year 2023. The SPM team wishes everyone a great new year.
  • 01/09/2022

We have successfully moved the XPS detector to the new chamber. Great team work.
  • 27/11/2022-02.12.2022

Jeremy and Joana attended the 2022 MRS Fall meeting in Boston. Here are their contributions.

Jeremy's talk: (EN04.04.08)
Intrinsic Light Instabilities in Metal Halide Perovskites
Joana's poster (EN02.03.09):
Co-Evaporation and Characterization of Tin Based Perovskite Films For Solar Cell Applications

Recent Publications

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

May 2022

Single-crystalline TiO2 nanoparticles for stable and efficient perovskite modules

Yong Ding, Bin Ding, Hiroyuki Kanda, Onovbaramwen Jennifer Usiobo, Thibaut Gallet, Zhenhai Yang, Yan Liu, Hao Huang, Jiang Sheng, Cheng Liu, Yi Yang, Valentin Ianis Emmanuel Queloz, Xianfu Zhang, Jean-Nicolas Audinot, Alex Redinger, Wei Dang, Edoardo Mosconic, Wen Luo, Filippo De Angelis, Mingkui Wang, Patrick Dörflinger, Melina Armer, Valentin Schmid, Rui Wang, Keith G Brooks, Jihuai Wu, Vladimir Dyakonov, Guanjun Yang, Songyuan Dai, Paul J Dyson, Mohammad Khaja Nazeeruddin

Nature Nanotechnology, 1-8 2022

March 2022

How much gallium do we need for a p-type Cu(In,Ga)Se2?
Omar Ramírez, Evandro Martin Lanzoni, Ricardo G. Poeira, Thomas P. Weiss, Renaud Leturcq, Alex Redinger, and Susanne Siebentritt
APL Mater. 10, 061108 (2022)

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