Klemens Ilse


Dr. Klemens Ilse, group leader "Materials for H2 Technologies"

Research activities


  • International cooperation on hydrogen research
  • Production of green hydrogen and its derivates from renewable energy, e.g. in desert locations
  • Hydrogen logistics
  • Standardization and certification of electrolyzers
  • New methods for degradation analysis and optimization of electrolyzer components
  • Photovoltaics in harsh climates

Academic/professional resume


Since 04/2022

Group leader "Materials for H2 Technologies"

11/2020 - 03/2022

Research associate in business unit "Hydrogen Technologies", Fraunhofer IMWS

02/2020 – 12/2020

Head of team "Functional and optical surfaces" within the group "Diagnostics and Metrology", Fraunhofer Center for Silicon Photovoltaics CSP

08/2015 – 05/2020

PhD thesis, written at the Martin-Luther-University Halle-Wittenberg and Fraunhofer CSP. Topic: "Microstructural investigation and simulation of natural soiling processes on PV modules"

08/2015 – 02/2020

Research associate and project management, Fraunhofer CSP and Anhalt University of Applied Science, Köthen


Master of Science in Physics at the Martin-Luther-University Halle-Wittenberg. Thesis: "Fabrication and characterization of silicon nanoparticles embedded in aluminum oxide"

06/2010 – 7/2015

Research assistent, group "Diagnostics and Metrology", Fraunhofer CSP

10/2009 – 09/2012

Bacherlor’s degree in Physics at the Martin-Luther-University Halle-Wittenberg. Thesis: "Electrical characterization of circuit structures for thin-film photovoltaic modules"





Schott AG Materials Award for PhD thesis "Microstructural investigation and simulation of natural soiling processes on PV modules"


Junior Award of the Heinz Bethge Foundation for Applied Electron Microscopy for PhD thesis "Microstructural investigation and simulation of natural soiling processes on PV modules"


"Overall EU PVSEC Student Award" at 36th European Photovoltaic Solar Energy Conference and Exhibition (EU PVSEC 2019) for "Physics of soiling and dust adhesion - lessons learnt from laboratory soiling tests"


"Best Poster Award" at 46th IEEE Photovoltaic Specialist Conference (PVSC 46) for "Quantification of abrasion-induced ARC transmission losses from reflection spectroscopy"


"Best Student Paper Award" at 44th IEEE Photovoltaic Specialists Conference (PVSC 44) für "Comparing indoor and outdoor soiling experiments for different glass coatings and microstructural analysis of particle caking processes"


Selected Publications


Resilience of industrial PV module glass coatings to cleaning processes

M.Z. Khan, C. Pfau, M. Schak, P.T. Miclea, V. Naumann, A. Debess, C. Hagendorf, K. Ilse
Journal of Renewable and Sustainable Energy 12.5 (2020): 05350 https://doi.org/10.1063/5.0024452 


Techno-economic assessment of soiling losses and mitigation strategies for solar power generation

K. Ilse, L. Micheli, B.W. Figgis, K. Lange, D. Daßler, H. Hanifi, F. Wolfertstetter, V. Naumann, C. Hagendorf, R. Gottschalg, J. Bagdahn
Joule 3 (2019) 2303–2321. https://doi.org/10.1016/j.joule.2019.08.019


Advanced performance testing of anti-soiling coatings – Part I: Sequential laboratory test methodology covering the physics of natural soiling processes

K. Ilse, M.Z. Khan, N. Voicu, V. Naumann, C. Hagendorf, J. Bagdahn
Solar Energy Materials and Solar Cells 202 (2019) 110048. https://doi.org/10.1016/j.solmat.2019.110048


Fundamentals of soiling processes on photovoltaic modules

K. Ilse, B.W. Figgis, V. Naumann, C. Hagendorf, J. Bagdahn
Renewable and Sustainable Energy Reviews 98 (2018) 239–254. https://doi.org/10.1016/j.rser.2018.09.015