291 citations · 513 across the 12 of their papers we have counts for
14 papers
How Charge Carrier Exchange between Absorber and Contact influences Time Constants in the Frequency Domain Response of Perovskite Solar Cells
Sandheep Ravishankar, Zhifa Liu, Yueming Wang +2
A model is derived for the frequency- and time-domain opto-electronic response of perovskite solar cells (PSCs) that emphasizes the role of charge carrier exchange, .i.e. extractio…
Characterizing the Influence of Charge Extraction Layers on the Performance of Triple-Cation Perovskite Solar Cells
Johanna Siekmann, Ashish Kulkarni, Samah Akel +4
Selecting suitable charge transport layers and suppressing non-radiative recombination at interfaces to the absorber layer are vital to maximize the efficiency of halide perovskite…
Quantifying Charge Extraction and Recombination Using the Rise and Decay of the Transient Photovoltage of Perovskite Solar Cells
Lisa Krückemeier, Zhifa Liu, Thomas Kirchartz +1
The extraction of photogenerated charge carriers and the generation of a photovoltage belong to the fundamental functionalities of any solar cell. These processes happen not instan…
Fill Factor Losses and Deviations from the Superposition Principle in Lead-Halide Perovskite Solar Cells
David Grabowski, Zhifa Liu, Gunnar Schöpe +2
The enhancement of the fill factor in the current generation of perovskite solar cells is the key for further efficiency improvement. Thus, methods to quantify the fill factor loss…
Effect of doping, photodoping and bandgap variation on the performance of perovskite solar cells
Basita Das, Irene Aguilera, Uwe Rau +1
Most traditional semiconductor materials are based on the control of doping densities to create junctions and thereby functional and efficient electronic and optoelectronic devices…
Multilayer Capacitances: How Selective Contacts Affect Capacitance Measurements of Perovskite Solar Cells
Sandheep Ravishankar, Zhifa Liu, Uwe Rau +1
Capacitance measurements as a function of voltage, frequency and temperature are useful tools to identify fundamental parameters that affect solar cell operation. Techniques such a…