3 papers
cond-mat.mtrl-sci2023
Comparing Methods of Characterizing Energetic Disorder in Organic Solar Cells
Paula Hartnagel, Sandheep Ravishankar, Benjamin Klingebiel +2
Energetic disorder has been known for decades to limit the performance of structurally disordered semiconductors such as amorphous silicon and organic semiconductors. However, in t…
physics.ins-det2022
Intensity Modulated Photocurrent Microspectrosopy for Next Generation Photovoltaics
Jamie Laird, Sandheep Ravishankar, Askhkat Jumabekov +4
In this report, we describe a large-area Laser Beam Induced Current (LBIC) microscope that has been adapted to perform Intensity Modulated Photocurrent Spectroscopy in an imaging m…
cond-mat.mtrl-sci2022
Interpretation of Mott-Schottky Plots of Photoanodes for Water Splitting
Sandheep Ravishankar, Juan Bisquert, Thomas Kirchartz
A large body of literature reports that both bismuth vanadate and haematite photoanodes are semiconductors with an extremely high doping density between 10^18-10^21 cm^-3. Such val…