69 citations · 500 across the 13 of their papers we have counts for
13 papers
Soft Coulomb Gap Limits the Performance of Organic Thermoelectrics
Yuqian Liu, Xiaoran Wei, Dorothea Scheunemann +4
Although consensus exists that the thermoelectric properties of doped organic semiconductors result from a complex interplay between a large number of mutually dependent factors, t…
Size-Dependent Charging Energy Determines the Charge Transport in ZnO Quantum Dot Solids
Morteza Shokrani, Dorothea Scheunemann, Clemens Göhler +1
Building up a solid-state material from quantum dots (QD), which are often referred to as artificial atoms, offers the potential to create new materials with unprecedented macrosco…
Charge transport in doped conjugated polymers for organic thermoelectrics
Dorothea Scheunemann, Emmy Järsvall, Jian Liu +5
Research on conjugated polymers for thermoelectric applications has made tremendous progress in recent years, which is accompanied by surging interest in molecular doping as a mean…
Experimentally Validated Hopping-Transport Model for Energetically Disordered Organic Semiconductors
Tanvi Upreti, Yuming Wang, Huotian Zhang +3
Charge transport in disordered organic semiconductors occurs by hopping of charge carriers between localized sites that are randomly distributed in a strongly energy dependent dens…
High thermoelectric power factor of poly(3-hexylthiophene) through in-plane alignment and doping with a molybdenum dithiolene complex
Viktoriia Untilova, Jonna Hynynen, Anna I. Hofmann +8
Here we report a record thermoelectric power factor of up to 160 W m-1 K-2 for the conjugated polymer poly(3-hexylthiophene) (P3HT). This result is achieved through the combina…
Rubbing and Drawing: Generic Ways to Improve the Thermoelectric Power Factor of Organic Semiconductors?
Dorothea Scheunemann, Vishnu Vijayakumar, Huiyan Zeng +4
Highly oriented polymer films can show considerable anisotropy in the thermoelectric properties leading to power factors beyond those predicted by the widely obeyed power law linki…
Non-Wiedemann-Franz Behavior of the Thermal Conductivity of Organic Semiconductors
Dorothea Scheunemann, Martijn Kemerink
Organic semiconductors have attracted increasing interest as thermoelectric converters in recent years due to their intrinsically low thermal conductivity compared to inorganic mat…
How to Reduce Charge Recombination in Organic Solar Cells: There Are Still Lessons to Learn from P3HT:PCBM
Sebastian Wilken, Dorothea Scheunemann, Staffan Dahlström +3
Suppressing charge recombination is key for organic solar cells to become commercial reality. However, there is still no conclusive picture of how recombination losses are influenc…
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…
Investigation of the Spatially Dependent Charge Collection Probability in CuInS/ZnO Colloidal Nanocrystal Solar Cells
Dorothea Scheunemann, Sebastian Wilken, Jürgen Parisi +1
Solar cells with a heterojunction between colloidal CuInS and ZnO nanocrystals are an innovative concept in solution-processed photovoltaics, but the conversion efficiency cann…
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…
Semitransparent Polymer-Based Solar Cells with Aluminum-Doped Zinc Oxide Electrodes
Sebastian Wilken, Verena Wilkens, Dorothea Scheunemann +4
With the usage of two transparent electrodes, organic solar cells are semitransparent and may be combined to parallel-connected multi-junction devices or used for innovative applic…