Julien Gorenflot

Research Scientists



Al Kindi B5/L3 3231-WS03

Selected Publications



  • J. Gorenflot, W. Alsufyani, M. Alqurashi, S. H. K. Paleti, D. Baran and F. Laquai. Increasing the Ionization Energy Offset to Increase the Quantum Efficiency in Non-Fullerene Acceptor-Based Organic Solar Cells: How Far Can We Go? Advanced Materials Interfaces. DOI:10.1002/admi.202202515 (2023).
  • S. Karuthedath, S. H. K. Paleti, A. Sharma, H. Yin, C. S. P. De Castro, S. Chen, H. Xu, N. Alshehri, N. Ramos, J. I. Khan, J. Martin, G. Li, F. Laquai, D. Baran and J. Gorenflot. Rationalizing the Influence of Tunable Energy Levels on Quantum Efficiency to Design Optimal Non-Fullerene Acceptor-Based Ternary Organic Solar Cells. Advanced Energy Materials. DOI: 10.1002/aenm.202203464 (2023).
  • V. Belova, A. Perevedentsev, J. Gorenflot,† C. S. P. De Castro, M. Casademont Viñas, S. H. K. Paleti , S. Karuthedath, D. Baran, F. Laquai and M. Campoy-Quiles. Effect of Quencher, Geometry, and Light Outcoupling on the Determination of Exciton Diffusion Length in Nonfullerene Acceptors. Solar RRL. DOI: 10.1002/solr.202100822 (2021)
  • M. Saladina, P. Simón Marqués, A. Markina, S. Karuthedath, C. Wöpke, C. Göhler, Y. Chen, M. Allain, P. Blanchard, C. Cabanetos, D. Andrienko, F. Laquai, J. Gorenflot, and C. Deibel. Charge Photogeneration in Non-Fullerene Organic Solar Cells: Influence of Excess Energy and Electrostatic Interactions Adv. Funct. Mater. DOI: 10.1002/adfm.202007479 (2020).
  • S. Karuthedath , J. Gorenflot , Y. Firdaus , et al. Intrinsic efficiency limits in low-bandgap non-fullerene acceptor organic solar cells. Nat. Mater. DOI: 10.1038/ s41563-020-00835-x (2020)
  • A. H. Balawi, Z. Kan, J. Gorenflot, P. Guarracino, N. Chaturvedi, A. Privitera, S. Liu, Y. Gao, L. Franco, P. Beaujuge, F. Laquai. Quantification of Photophysical Processes in All-PolymerBulk Heterojunction Solar Cells. Solar RRL. DOI: 10.1002/solr.202000181 (2020).
  • S. Karuthedath, J. Gorenflot, A. Melianas, Z. Kan, M. Kemerink, F. Laquai. Build-up of Triplet State Population in Operating TQ1:PC71BM Devices Does Not Limit Their Performance. J. Phys. Chem. Lett. DOI: 10.1021/acs.jpclett.0c0075​ (2020).
  • A. Labrunie, J. Gorenflot, M. Babics, O. Alévêque, S. Dabos-Seignon, A. H. Balawi, Z. Kan, M. Wohlfahrt, E. Levillain, P. Hudhomme, P. M. Beaujuge, F. Laquai, C. Cabanetos, and P. Blanchard. Triphenylamine-Based Push–Pull σ–C60 Dyad As Photoactive Molecular Material for Single-Component Organic Solar Cells: Synthesis, Characterizations, and Photophysical Properties.​ Chemistry of Materials. DOI: 10.1021/acs.chemmater.8b01117​ (2018). 
  • J. Gorenflot, A. Paulke, F. Piersimoni, J. Wolf, Z. Kan, F. Cruciani, A. El Labban, D. Neher, P. M. Beaujuge, and F. Laquai. From Recombination Dynamics to Device Performance: Quantifying the Efficiency of Exciton Dissociation, Charge Separation, and Extraction in Bulk Heterojunction Solar Cells with Fluorine-Substituted Polymer Donors. Advanced Energy Materials. DOI: 10.1002/aenm.201701678 (2018).
  • J. Gorenflot, M. C. Heiber, A. Baumann, J. Lorrmann, M. Gunz, A. Kämpgen, V. Dyakonov and C. Deibel. Nongeminate recombination in neat P3HT and P3HT:PCBM blend films. The Journal of Applied Physics. DOI: 10.1063/1.4870805 (2014).
  • J.Savenije, D. H. K. Murthy, M. Gunz, J. Gorenflot, L. D. A. Siebbeles, V. Dyakonov, and C. Deibel. Absence of postnanosecond charge carrier relaxation in poly(3-hexylthiophene)/fullerene blends. The Journal of Physical Chemistry Letters. DOI: 10.1021/jz200569h (2011​).
  • C. Deibel, D. Mack, J. Gorenflot, A. Schöll, S. Krause, F. Reinert, D. Rauh and V. Dyakonov. Energetics of excited states in the conjugated polymer poly(3-hexylthiophene). Phys.Rev. DOI: 10.1103/PhysRevB.81.085202 (2010)​.​




    • ​Ph.D. in Physics, University of Würzburg, Germany, 2015
    • M.Sc in Physics, Louis Pasteur University, France, 2006
    • M.Sc in Engineering, University of Strasbourg, France, 2006

    Professional Profile

    • 2015: Postdoctoral Fellow, Max Planck Institute for Polymer Research, Mainz, Germany

    Scientific and Professional Membership

    ● Member, Deutsche Physikalische Gesellschaft(DPG)

    Research Interests Keywords

    Organic Solar Cells Transient Absorption Spectroscopy Photoluminescence Spectroscopy Photophysics Charge Carrier Dynamics