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The last 5 uploaded publications
Effect of Organic Binders on the Film Morphology of Hydrogen‐Terminated Nanodiamonds Used for Electron Extraction in Organic Solar Cells
Aurelien Sokeng Djoumessi, Zhuo Xu, Chikezie Ugokwe, Daria Miliaieva, Steffi Stumpf, Tanja Deckert‐Gaudig, Jan Čermák, Štěpán Stehlík, Volker Deckert, Bohuslav Rezek, Ulrich Sigmar Schubert, Harald Hoppe (2026). Effect of Organic Binders on the Film Morphology of Hydrogen‐Terminated Nanodiamonds Used for Electron Extraction in Organic Solar Cells. , 10(3), DOI: https://doi.org/10.1002/solr.202500508.
Article24 days agoA Different, Nondestructive Method of Investigating In Situ Degradation in Hybrid Perovskite Solar Cells
Chikezie Ugokwe, Zekarias Teklu Gebremichael, Kehinde Ogunmoye, Chibuike Onwuzuroha, Marco Diegel, Ulrich Sigmar Schubert, Harald Hoppe (2024). A Different, Nondestructive Method of Investigating In Situ Degradation in Hybrid Perovskite Solar Cells. , 2024(1), DOI: https://doi.org/10.1155/2024/8858009.
Article24 days agoPerformance and Stability of Organic Solar Cells Bearing Nitrogen Containing Electron Extraction Layers
Rico Meitzner, Juliette Essomba, Shahidul Alam, Aman Anand, N. Engel, Kevin Fulbert, Krisna Kuma, Fernanda Ayuyasmin, Md Moidul Islam, Chikezie Ugokwe, Ulrich Sigmar Schubert, Harald Hoppe (2020). Performance and Stability of Organic Solar Cells Bearing Nitrogen Containing Electron Extraction Layers. , 8(12), DOI: https://doi.org/10.1002/ente.202000117.
Article24 days agoStabilizing Perovskite Solar Cells by Methyltriphenylphosphonium Iodide Studied with Maximum Power Point Tracking
Niklas Manikowsky, Zekarias Teklu Gebremichael, Chikezie Ugokwe, Bidhan Bhandari, Steffi Stumpf, Ulrich Sigmar Schubert, Harald Hoppe (2025). Stabilizing Perovskite Solar Cells by Methyltriphenylphosphonium Iodide Studied with Maximum Power Point Tracking. , 15(2), DOI: https://doi.org/10.3390/cryst15020176.
Article24 days agoHow varying surface wettability of different PEDOT:PSS formulations and their mixtures affects perovskite crystallization and the efficiency of inverted perovskite solar cells
Zekarias Teklu Gebremichael, Chikezie Ugokwe, Shahidul Alam, Steffi Stumpf, Marco Diegel, Ulrich Sigmar Schubert, Harald Hoppe (2022). How varying surface wettability of different PEDOT:PSS formulations and their mixtures affects perovskite crystallization and the efficiency of inverted perovskite solar cells. , 12(39), DOI: https://doi.org/10.1039/d2ra03843a.
Article24 days ago