Arnulf Jäger-Waldau

TL;DR: In this paper, the work function of semiconductor and metal surfaces prepared in ultra-high vacuum (UHV) was measured using a combination of UHV noncontact atomic force microscopy and Kelvin probe forces microscopy, which revealed a reduced work function in the vicinity of steps on highly oriented pyrolytic graphite.

TL;DR: In this paper, the authors examined to what extent the currently carbon-intensive hydrogen production in Europe could be replaced by water electrolysis using electricity from renewable energy resources (RES) such as solar photovoltaic, onshore/offshore wind and hydropower (green hydrogen).

TL;DR: In this article, the authors argue that photovoltaics and renewable energies are growing at a much faster pace than the rest of the economy in Europe and worldwide and that renewable energy sources for the generation of heat and the use of environment friendly biofuels for the transport sector will become more and more important in the future.

TL;DR: In this article, the authors developed a geospatially explicit methodology using up-to-date spatial information of the EU building stock to quantify the available rooftop area for PV systems.

TL;DR: The factors that lie behind the historical cost reductions of solar PV are reviewed and innovations in the pipeline are identified that could contribute to maintaining a high learning rate, which will be crucial to remain in a decarbonization path compatible with the Paris Agreement.