LTI

Dr. Holger Röhm

  • Materialwissenschaftliches Zentrum für Energiesysteme (MZE)
    Straße am Forum 7, Geb. 30.48
    76131 Karlsruhe

Doctoral Examination

Topic: Ferroelektrizität in Methylammoniumbleiiodid-Solarzellen

Oral exam:  26.09.2019
Referent: Priv.-Doz. Dr.-Ing. Alexander Colsmann
Co-Referent: Prof. Dr.-Ing. Ellen Ivers-Tiffée

Publications


2024
Photocatalytic Hydrogen Generation in Surfactant‐Free, Aqueous Organic Nanoparticle Dispersions
Bruder, J.; Fischer, K.; Armleder, J.; Müller, E.; Da Roit, N.; Behrens, S.; Peng, Y.; Wenzel, W.; Röhm, H.; Colsmann, A.
2024. Small, 20 (47), 2406236. doi:10.1002/smll.202406236
Doping Strategies for Tetrasubstituted Paracyclophane Hole Transport Layers in Perovskite Solar Cells
Schulz, A. D.; Otterbach, S. A.; Tappert, H.; Elsing, D.; Wenzel, W.; Kozlowska, M.; Bräse, S.; Colsmann, A.; Röhm, H.
2024. Advanced Functional Materials, 34 (47), Art.-Nr.: 2402110. doi:10.1002/adfm.202402110
Pseudo‐ Para ‐Substituted [2.2]Paracyclophanes for Hole Transport in Perovskite Solar Cells
Otterbach, S. A.; Elsing, D.; Schulz, A. D.; Tappert, H.; Wenzel, W.; Kozlowska, M.; Röhm, H.; Bräse, S.
2024. Advanced Functional Materials, 34 (47). doi:10.1002/adfm.202309226
2023
Iodine‐Stabilized Organic Nanoparticle Dispersions for the Fabrication of 10% Efficient Non‐Fullerene Solar Cells
Manger, F.; Fischer, K.; Marlow, P.; Röhm, H.; Sprau, C.; Colsmann, A.
2023. Advanced Energy Materials, Art.-Nr.: 2202820. doi:10.1002/aenm.202202820
2022
Ferroelectricity in halide perovskites
Röhm, H.
2022. Ferroelectrics – Advances in fundamental studies and emerging applications. Ed.: Y. Bai, 7–1–7, Institute of Physics Publishing Ltd (IOP Publishing Ltd). doi:10.1088/978-0-7503-3975-9ch7
Ferroelectricity and Crystal Phases in Mixed‐Cation Lead Iodide Perovskite Solar Cells
Schulz, A. D.; Schmitt, M. O.; Braun, M.; Colsmann, A.; Hinterstein, M.; Röhm, H.
2022. Solar RRL, 6 (12), Art.-Nr.: 2200808. doi:10.1002/solr.202200808
2021
Evolution of ferroelectric domains in methylammonium lead iodide and correlation with the performance of perovskite solar cells
Leonhard, T.; Röhm, H.; Altermann, F. J.; Hoffmann, M. J.; Colsmann, A.
2021. Journal of materials chemistry / A, 9 (38), 21845–21858. doi:10.1039/d1ta06290e
2020
Shining Light on Organic Solar Cells
Colsmann, A.; Röhm, H.; Sprau, C.
2020. Solar RRL, 4 (6), Art.Nr. 2000015. doi:10.1002/solr.202000015
Ferroelectric Poling of Methylammonium Lead Iodide Thin Films
Röhm, H.; Leonhard, T.; Hoffmann, M. J.; Colsmann, A.
2020. Advanced functional materials, 30 (5), Art.Nr. 908657. doi:10.1002/adfm.201908657
Ferroelectricity and stability measurements in perovskite solar cells
Colsmann, A.; Röhm, H.
2020. JPhys energy, 2 (1), Art.-Nr.: 011003. doi:10.1088/2515-7655/ab5b71
2019
On the ferroelectricity of CH3NH3PbI3 perovskites
Schulz, A. D.; Röhm, H.; Leonhard, T.; Wagner, S.; Hoffmann, M. J.; Colsmann, A.
2019. Nature materials, 18 (10), 1050. doi:10.1038/s41563-019-0480-7
Probing the Microstructure of Methylammonium Lead Iodide Perovskite Solar Cells
Leonhard, T.; Schulz, A. D.; Röhm, H.; Wagner, S.; Altermann, F. J.; Rheinheimer, W.; Hoffmann, M. J.; Colsmann, A.
2019. Energy technology, 7 (3), Art. Nr.: 1800989. doi:10.1002/ente.201800989
Ferroelektrizität in Methylammoniumbleiiodid-Solarzellen. PhD dissertation
Röhm, H.
2019. Karlsruher Institut für Technologie (KIT). doi:10.5445/IR/1000099065
Film formation, microstructure and ferroelectricity of MAPbI3 light-harvesting layers
Röhm, H.; Leonhard, T.; Schulz, A.; Wagner, S.; Hoffmann, M.; Colsmann, A.
2019. DPG-Frühjahrstagung der Sektion Kondensierte Materie (SKM), Fachverband Chemische Physik und Polymerphysik (2019), Regensburg, Germany, March 31–April 5, 2019
Ferroelectric Properties of Perovskite Thin Films and Their Implications for Solar Energy Conversion
Röhm, H.; Leonhard, T.; Schulz, A. D.; Wagner, S.; Hoffmann, M. J.; Colsmann, A.
2019. Advanced materials, Art.Nr.: 1806661. doi:10.1002/adma.201806661
2018
On the importance of ferroelectric domains for the performance of perovskite solar cells
Rossi, D.; Pecchia, A.; Auf der Maur, M.; Leonhard, T.; Röhm, H.; Hoffmann, M. J.; Colsmann, A.; Carlo, A. D.
2018. Nano energy, 48, 20–26. doi:10.1016/j.nanoen.2018.02.049
Probing the microstructure of methylammonium lead iodide solar cells
Leonhard, T.; Röhm, H.; Schulz, A.; Wagner, S.; Altermann, F.; Rheinheimer, W.; Hoffmann, M. J.; Colsmann, A.
2018. Light, Energy and the Environment 2018 (E2, FTS, HISE, SOLAR, SSL). Proceedings., Art.-Nr.: OM2D.6, Optica Publishing Group (OSA). doi:10.1364/OSE.2018.OM2D.6
2017
Solar Glasses : A Case Study on Semitransparent Organic Solar Cells for Self-Powered, Smart, Wearable Devices
Landerer, D.; Bahro, D.; Röhm, H.; Koppitz, M.; Mertens, A.; Manger, F.; Denk, F.; Heidinger, M.; Windmann, T.; Colsmann, A.
2017. Energy technology, 5 (11), 1936–1945. doi:10.1002/ente.201700226
Ferroelectric domains in methylammonium lead iodide perovskite thin-films
Röhm, H.; Leonhard, T.; Hoffmann, M. J.; Colsmann, A.
2017. Energy & environmental science, 10 (4), 950–955. doi:10.1039/C7EE00420F
2014
Eco‐Friendly Fabrication of 4% Efficient Organic Solar Cells from Surfactant‐Free P3HT:ICBA Nanoparticle Dispersions
Gärtner, S.; Christmann, M.; Sankaran, S.; Röhm, H.; Prinz, E.-M.; Penth, F.; Pütz, A.; Türeli, A. E.; Penth, B.; Baumstümmler, B.; Colsmann, A.
2014. Advanced materials, 26 (38), 6653–6657. doi:10.1002/adma.201402360