© 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
Students
Publications
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
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
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)
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
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
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
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
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
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
