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Consortium of Swiss Academic Libraries

Evaporation from Wavy Porous Surfaces into Turbulent Airflows

Haghighi, Erfan ; Or, Dani

In: Transport in Porous Media, 2015, vol. 110, no. 2, p. 225-250

Université de Fribourg

Mahan excitons in room-temperature methylammonium lead bromide perovskites

Palmieri, Tania ; Baldini, Edoardo ; Steinhoff, Alexander ; Akrap, Ana ; Kollár, Márton ; Horváth, Endre ; Forró, László ; Jahnke, Frank ; Chergui, Majed

In: Nature Communications, 2020, vol. 11, no. 1, p. 850

In a seminal paper, Mahan predicted that excitonic bound states can still exist in a semiconductor at electron-hole densities above the insulator-to-metal Mott transition. However, no clear evidence for this exotic quasiparticle, dubbed Mahan exciton, exists to date at room temperature. In this work, we combine ultrafast broadband optical spectroscopy and advanced many-body calculations to...

Université de Fribourg

Chemistry of alkaline earth metals: It is not all ionic and definitely not boring!

Fromm, Katharina M.

In: Coordination Chemistry Reviews, 2020, vol. 408, p. 213193

Some scientists might consider group 2 chemistry as “boring, closed shell and all ionic, aqueous chemistry, where everything is known! It is not worth investigating”. How wrong they are! Far from forming only purely ionic compounds, this review will shed light on some spectacular molecules, showing that alkaline earth metal ions can behave similar to transition metal ions. After general...

Université de Fribourg

Efficient perovskite nanocrystal light-emitting diodes using a benzimidazole-substituted anthracene derivative as the electron transport material

Kumar, Sudhir ; Marcato, Tommaso ; Vasylevskyi, Serhii I. ; Jagielski, Jakub ; Fromm, Katharina M. ; Shih, Chih-Jen

In: Journal of Materials Chemistry C, 2019, vol. 7, no. 29, p. 8938–8945

Colloidal nanocrystals of organic–inorganic hybrid perovskites (OIHPs) are an emerging class of solid-state lighting materials owing to their outstanding photophysical properties. Considerable research efforts have been devoted to the fabrication of high-performance light-emitting diodes (LEDs) based on these materials, including interface engineering which is essential for balancing the...

Consortium of Swiss Academic Libraries

Maximal oxygen consumption in healthy humans: theories and facts

Ferretti, Guido

In: European Journal of Applied Physiology, 2014, vol. 114, no. 10, p. 2007-2036