Browsing by Author "Essig, S."

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Mechanically stacked 4-terminal III-V/Si tandem solar cells

Essig, S.; Allebe, C.; Geisz, J. F.; Steiner, M. A.; Barraud, L.; Descoeudres, A.; et al. (2017)

We developed 4-terminal III-V/Si dual-junction solar cells that reach certified record 1-sun efficiencies over 32%. These efficiency values exceed the theoretical efficiency limit of single-junction solar cells and prove ...
Raising the one-sun conversion efficiency of III-V/Si solar cells to 32.8% for two junctions and 35.9% for three junctions

Essig, S.; Allebe, C.; Remo, T.; Geisz, J. F.; Steiner, M. A.; Horowitz, K.; et al. (2017)

Today''s dominant photovoltaic technologies rely on single-junction devices, which are approaching their practical efficiency limit of 25-27%. Therefore, researchers are increasingly turning to multi-junction devices, which ...
Toward Annealing-Stable Molybdenum-Oxide-Based Hole-Selective Contacts For Silicon Photovoltaics

Essig, S.; Dreon, J.; Rucavado, E.; Mews, M.; Koida, T.; Boccard, M.; et al. (2018)

Molybdenum oxide (MoOX) combines a high work function with broadband optical transparency. Sandwiched between a hydrogenated intrinsic amorphous silicon passivation layer and a transparent conductive oxide, this material ...