Jonas Wortmann
YOU?
Author Swipe
View article: Improved ZnO Post‐Treatment for High Performance Organic Solar Cell Materials
Improved ZnO Post‐Treatment for High Performance Organic Solar Cell Materials Open
Zinc oxide (ZnO) is a widely used electron transport layer for organic solar cells which has been optimized and established for the first generation of organic photovoltaic (OPV) materials. With the emergence of novel OPV materials which c…
View article: Fine-Tuning Donor Material Deposition with Ultrasonic Aerosol Jet Printing to Balance Efficiency and Stability in Inverted Organic Photovoltaic Devices
Fine-Tuning Donor Material Deposition with Ultrasonic Aerosol Jet Printing to Balance Efficiency and Stability in Inverted Organic Photovoltaic Devices Open
The response surface methodology (RSM) based on a Box-Behnken (BB) design of experiment (DoE) approach was performed, with the central point repeated four times to enhance statistical reliability, to systematically investigate the influenc…
View article: Locating Non‐Radiative Recombination Losses and Understanding Their Impact on the Stability of Perovskite Solar Cells During Photo‐Thermal Accelerated Ageing
Locating Non‐Radiative Recombination Losses and Understanding Their Impact on the Stability of Perovskite Solar Cells During Photo‐Thermal Accelerated Ageing Open
Commercialization of perovskite solar cells (PSCs) requires further breakthroughs in stability, but the complex degradation mechanisms and the interplay of the underlying stress factors complicate insight‐driven improvement of long‐term st…
View article: DeepDeg: Forecasting and explaining degradation in novel photovoltaics
DeepDeg: Forecasting and explaining degradation in novel photovoltaics Open
Degradation is a technical and market hurdle in the development of novel photovoltaics and other energy devices. Understanding and addressing degradation requires complex, time-consuming measurements on multiple samples. To address this ch…
View article: A High Throughput Platform to Minimize Voltage and Fill Factor Losses
A High Throughput Platform to Minimize Voltage and Fill Factor Losses Open
Organic photovoltaics (OPV) now can exceed 20% power conversion efficiency in single junction solar cells. To close the remaining gap to competing technologies, both fill factor and open‐circuit voltage must be optimized. The Langevin redu…
View article: Aerosol‐Jet‐Printed Silver Nanowires as Top Electrodes in Organic Photovoltaic Devices
Aerosol‐Jet‐Printed Silver Nanowires as Top Electrodes in Organic Photovoltaic Devices Open
Aerosol jet printing (AJP) is an effective method for manufacturing organic photovoltaic (OPV) devices for indoor use. Its noncontact deposition, without posttreatment, and high‐resolution 3D pattern printing capabilities make it ideal for…
View article: Photodegradation of Organic Solar Cells under Visible Light and the Crucial Influence of Its Spectral Composition
Photodegradation of Organic Solar Cells under Visible Light and the Crucial Influence of Its Spectral Composition Open
While wavelength-dependent photodegradation of organic solar cells (OSCs) under visible light is typically discussed in terms of UV/blue light-activated phenomena, we recently demonstrated wavelength-dependent degradation rates up to 660 n…
View article: DeepDeg: Forecasting and explaining degradation in novel photovoltaics
DeepDeg: Forecasting and explaining degradation in novel photovoltaics Open
Degradation is a technical and market hurdle in the development of novel photovoltaics and other energy devices. Understanding and addressing degradation requires complex, time-consuming measurements on multiple samples. To address this ch…
View article: Understanding Causalities in Organic Photovoltaics Device Degradation in a Machine‐Learning‐Driven High‐Throughput Platform
Understanding Causalities in Organic Photovoltaics Device Degradation in a Machine‐Learning‐Driven High‐Throughput Platform Open
Organic solar cells (OSCs) now approach power conversion efficiencies of 20%. However, in order to enter mass markets, problems in upscaling and operational lifetime have to be solved, both concerning the connection between processing cond…
View article: Magnetic Refrigeration with Recycled Permanent Magnets and Free Rare‐Earth Magnetocaloric La–Fe–Si
Magnetic Refrigeration with Recycled Permanent Magnets and Free Rare‐Earth Magnetocaloric La–Fe–Si Open
Magnetic refrigeration is an upcoming technology that could be an alternative to the more than 100‐year‐old conventional gas–vapor compression cooling. Magnetic refrigeration might answer some of the global challenges linked with the incre…