© Dr. Fatwa F. Abdi Helmholtz-Zentrum Berlin für Materialien und Energie GmbH
In Short
About the project
The aim of the H2Demo project is to produce the first large-scale demonstrators for direct solar hydrogen production. This is the absorption of sunlight in a semiconductor structure that generates a sufficiently large photovoltage > 1.6 volts to decompose water directly into hydrogen and oxygen. In the project, particularly promising tandem absorbers made of GaAsP/Si are being developed, which have the best chances of economic viability in combination with high efficiency and scalability.
Work Packages
![Work Package 1](https://h2demo.de/images/workpackages/WP1-III-Vcell.jpg)
Students
![Erica Schmitt](https://h2demo.de/images/students/EricaSchmitt_small.jpg)
![Jonas Grutke](https://h2demo.de/images/students/JonasGrutke_quadrat.jpg)
![Patrick Redmond](https://h2demo.de/images/students/FlexAl_quadrat.jpg)
![Sven Schneider](https://h2demo.de/images/students/SvenSchneider_quadrat.jpg)
![Diwakar Suresh Babu](https://h2demo.de/images/students/DiwakarSueshBabu_quadrat.jpg)
![Christoph Klein](https://h2demo.de/images/students/ChristophKlein.png)
Publications
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Photoelectrochemical Schlenk cell functionalization of multi-junction watersplitting photoelectrodes
Erica A. Schmitt, Margot Guidat, Max Nusshör, Anna-Lena Renz, Kristof Möller, Marco Flieg, Daniel Lörch, Moritz Kölbach, Matthias M. May
Cell Reports Physical Science
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The annual-hydrogen-yield-climatic-response ratio: evaluating the real-life performance of integrated solar water splitting devices
Moritz Kölbach, Oliver Höhn, Kira Rehfeld, Manuel Finkbeiner, James Barry and Matthias M. May
Sustainable Energy Fuels, 2022,6
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A Route to Obtaining Low-Defect III–V Epilayers on Si(100) Utilizing MOCVD
Manali Nandy, Agnieszka Paszuk, Markus Feifel, Christian Koppka, Peter Kleinschmidt, Frank Dimroth, and Thomas Hannappel
Cryst. Growth Des. 2021, 21, 10, 5603–5613
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Counter-balancing light absorption and ionic transport losses in the electrolyte for integrated solar water splitting with III-V/Si dual-junctions
Moritz Kölbach, Ciler Özen, Oliver Höhn, David Lackner, Markus Feifel, Fatwa F. Abdi and Matthias M. May
Appl. Phys. Lett. 119, 083904 (2021)
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Combining experimental and computational methods to unravel the dynamical structure of photoelectrosynthetic interfaces
Matthias M. May, Wolfram Jaegermann
Current Opinion in Electrochemistry, Volume 34, August 2022
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Combining experimental and computational methods to unravel the dynamical structure of photoelectrosynthetic interfaces
Matthias M. May, and Wolfram Jaegermann
Current Opinion in Electrochemistry, Volume 34, 100968
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Effect of growth interruption on Ga(N, As)/Ga(As, Sb)/Ga(N, As) type-II-“W” quantum well heterostructures
Jannik Lehr, Lukas Hellweg, Christian Fuchs, Saleh Firoozabadi, Pirmin Kükelhan, Andreas Beyer, Kerstin Volz, and Wolfgang Stolz
Journal of Crystal Growth, Volume 582, 126501
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Measuring spatially-resolved potential drops at semiconductor hetero-interfaces using 4D-STEM
Varun Shankar Chejarla, Shamail Ahmed, Jürgen Belz, Jonas Scheunert, Andreas Beyer, and Kerstin Volz
Condensed Matter, Material Science
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Quantitative composition determination by ADF-STEM at a low-angular regime: a combination of EFSTEM and 4DSTEM
S Firoozabadi, P Kükelhan, A Beyer, J Lehr, D Heimes, and K Volz
Ultramicroscopy, Volume 240, 113550
![Image not loaded](https://h2demo.de/images/publications/Annual_Hydrogen.png)
The annual-hydrogen-yield-climatic-response ratio: evaluating the real-life performance of integrated solar water splitting devices
Matthias M. May, and Wolfram Jaegermann
Sustainable Energy & Fuels, Issue 17
Blog
News from the project
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