235 citations · 546 across the 14 of their papers we have counts for
5 papers · 1 filter
Watching Space Charge Build up in an Organic Solar Cell
Sebastian Wilken, Oskar J. Sandberg, Dorothea Scheunemann +1
Space charge effects can significantly degrade charge collection in organic photovoltaics (OPVs), especially in thick-film devices. The two main causes of space charge are doping a…
Impact of a doping-induced space-charge region on the collection of photo-generated charge carriers in thin-film solar cells based on low-mobility semiconductors
Oskar J. Sandberg, Staffan Dahlström, Mathias Nyman +3
Unintentional doping of the active layer is a source for lowered device performance in organic solar cells. The effect of doping is to induce a space-charge region within the activ…
A Theoretical Perspective on Transient Photovoltage and Charge Extraction Techniques
Oskar J. Sandberg, Kristofer Tvingstedt, Paul Meredith +1
Transient photovoltage (TPV) is a technique frequently used to determine charge carrier lifetimes in thin-film solar cells such as organic, dye sensitized and perovskite solar cell…
On the effect of surface recombination in thin film solar cells, light emitting diodes and photodetectors
Oskar J. Sandberg, Ardalan Armin
Radiative and non-radiative charge carrier recombination in thin-film diodes plays a key role in determining the efficiency of electronic devices made of next generation semiconduc…
Effect of Imbalanced Charge Transport on the Interplay of Surface and Bulk Recombination in Organic Solar Cells
Dorothea Scheunemann, Sebastian Wilken, Oskar J. Sandberg +2
Surface recombination has a major impact on the open-circuit voltage () of organic photovoltaics. Here, we study how this loss mechanism is influenced by imbalanced ch…