58 citations · 79 across the 3 of their papers we have counts for
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Energetics and Kinetics Requirements for Organic Solar Cells to 2 Break the 20% Power Conversion Efficiency Barrier
Oskar J Sandberg, Ardalan Armin
The thermodynamic limit for the efficiency of solar cells is predominantly defined by the energy bandgap of the used semiconductor. In case of organic solar cells both energetics a…
Direct quantification of quasi-Fermi level splitting in organic semiconductor devices
Drew B. Riley, Oskar J. Sandberg, Nora M. Wilson +6
Non-radiative losses to the open-circuit voltage are a primary factor in limiting the power conversion efficiency of organic photovoltaic devices. The dominant non-radiative loss i…
Determining Ultra-low Absorption Coefficients of Organic Semiconductors from the Sub-bandgap Photovoltaic External Quantum Efficiency
Christina Kaiser, Stefan Zeiske, Paul Meredith +1
Energy states below the bandgap of a semiconductor, such as trap states or charge transfer states in organic donor acceptor blends, can contribute to light absorption. Due to their…
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…