Electrical conductivity and magnetism at organic single crystal charge transfer interfaces

• Applicant: Yulia Krupskaya, Ph.D.
• Subject Area: Experimental Condensed Matter Physics
• Term: from 2017 to 2022
• Project identifier: Deutsche Forschungsgemeinschaft (DFG) - Project number 326645892

• Final Report Year: 2023

Final Report Abstract

This project was aimed at the better understanding of charge-transfer effects in organic semiconductors. We grew pure and mixed-molecule organic semiconductor single crystals, characterized their structural and electronic properties, fabricated charge-transfer devices via interfacial or bulk doping, and studied the charge-transfer effects occurred in these devices. In our charge-transfer co-crystals we found interesting correlations between the molecular structure and the intermolecular interactions and the amount of charge transfer. Furthermore, we developed modulation doping in organic semiconductors and showed that it allows achieving superior doping efficiencies even for high doping densities, when conventional bulk doping runs into the reserve regime. Besides that, we found that interfacial doping (in comparison to bulk doping) is a more efficient way to achieve electrical conductivity in a semiconducting polymer. On the other hand, we observed that the structure of the acceptor material (amorphous or crystalline) at the interface with a rubrene single crystal does not have a significant influence on the charge-carrier mobility in rubrene.

Publications

• An unusual donor–acceptor system MnIIPc-TCNQ/F4-TCNQ and the properties of the mixed single crystals of metal phthalocyanines with organic acceptor molecules. Dalton Transactions, 48(46), 17252-17257.
  Kataeva, Olga; Metlushka, Kirill; Ivshin, Kamil; Nikitina, Kristina; Alfonsov, Vladimir; Vandyukov, Alexander; Khrizanforov, Mikhail; Budnikova, Yulia; Sinyashin, Oleg; Krupskaya, Yulia; Kataev, Vladislav; Büchner, Bernd & Knupfer, Martin
  
• Charge-Transfer Complexes of Linear Acenes with a New Acceptor Perfluoroanthraquinone. The Interplay of Charge-Transfer and F···F Interactions. Crystal Growth & Design, 19(9), 5123-5131.
  Kataeva, Olga; Ivshin, Kamil; Metlushka, Kirill; Latypov, Shamil; Nikitina, Kristina; Zakharychev, Dmitry; Laskin, Artem; Alfonsov, Vladimir; Sinyashin, Oleg; Mgeladze, Eter; Jäger, Anne; Krupskaya, Yulia; Büchner, Bernd & Knupfer, Martin
  
• Sequentially Processed P3HT/CN6‐CP•−NBu4+ Films: Interfacial or Bulk Doping?. Advanced Electronic Materials, 6(5).
  Karpov, Yevhen; Kiriy, Nataliya; Formanek, Petr; Hoffmann, Cedric; Beryozkina, Tetyana; Hambsch, Mike; Al‐Hussein, Mahmoud; Mannsfeld, Stefan C. B.; Büchner, Bernd; Debnath, Bipasha; Bretschneider, Michael; Krupskaya, Yulia; Lissel, Franziska & Kiriy, Anton
  
• Ultrasoft and High‐Mobility Block Copolymers for Skin‐Compatible Electronics. Advanced Materials, 33(4).
  Ditte, Kristina; Perez, Jonathan; Chae, Soosang; Hambsch, Mike; Al‐Hussein, Mahmoud; Komber, Hartmut; Formanek, Peter; Mannsfeld, Stefan C. B.; Fery, Andreas; Kiriy, Anton & Lissel, Franziska
  
• Charge Carrier Mobility Improvement in Diketopyrrolopyrrole Block-Copolymers by Shear Coating. Polymers, 13(9), 1435.
  Ditte, Kristina; Kiriy, Nataliya; Perez, Jonathan; Hambsch, Mike; Mannsfeld, Stefan C. B.; Krupskaya, Yulia; Maragani, Ramesh; Voit, Brigitte & Lissel, Franziska
  
• Exciton dispersion in para-quaterphenyl: Significant molecular interactions beyond Coulomb coupling. AIP Advances, 11(9).
  Graf, Lukas; Krupskaya, Yulia; Büchner, Bernd & Knupfer, Martin
  
• New Charge Transfer Cocrystals of F2TCNQ with Polycyclic Aromatic Hydrocarbons: Acceptor–Acceptor Interactions and Their Contribution to Supramolecular Arrangement and Charge Transfer. Crystal Growth & Design, 22(1), 751-762.
  Kataeva, Olga; Ivshin, Kamil; Metlushka, Kirill; Nikitina, Kristina; Khrizanforova, Vera; Budnikova, Yulia; Fayzullin, Robert R.; Latypov, Shamil; Schiemenz, Sandra; Bretschneider, Michael; Popov, Alexey; Avdoshenko, Stanislav; Krupskaya, Yulia; Büchner, Bernd & Knupfer, Martin
  
• Vacuum processed large area doped thin-film crystals: A new approach for high-performance organic electronics. Materials Today Physics, 17, 100352.
  Wang, S.-J.; Sawatzki, M.; Kleemann, H.; Lashkov, I.; Wolf, D.; Lubk, A.; Talnack, F.; Mannsfeld, S.; Krupskaya, Y.; Büchner, B. & Leo, K.
  
• Charge‐Compensated N‐Doped π‐Conjugated Polymers: Toward both Thermodynamic Stability of N‐Doped States in Water and High Electron Conductivity. Advanced Science, 9(31).
  Borrmann, Fabian; Tsuda, Takuya; Guskova, Olga; Kiriy, Nataliya; Hoffmann, Cedric; Neusser, David; Ludwigs, Sabine; Lappan, Uwe; Simon, Frank; Geisler, Martin; Debnath, Bipasha; Krupskaya, Yulia; Al‐Hussein, Mahmoud & Kiriy, Anton
  
• Highly efficient modulation doping: A path toward superior organic thermoelectric devices. Science Advances, 8(13).
  Wang, Shu-Jen; Panhans, Michel; Lashkov, Ilia; Kleemann, Hans; Caglieris, Federico; Becker-Koch, David; Vahland, Jörn; Guo, Erjuan; Huang, Shiyu; Krupskaya, Yulia; Vaynzof, Yana; Büchner, Bernd; Ortmann, Frank & Leo, Karl
  
• Optical Anisotropy and Momentum-Dependent Excitons in Dibenzopentacene Single Crystals. ACS Omega, 7(24), 21183-21191.
  Graf, Lukas; Liu, Fupin; Naumann, Marco; Roth, Friedrich; Debnath, Bipasha; Büchner, Bernd; Krupskaya, Yulia; Popov, Alexey A. & Knupfer, Martin
  
• Thermal behavior and polymorphism of 2,9-didecyldinaphtho[2,3-b:2′,3′-f]thieno[3,2-b]thiophene thin films. Molecular Systems Design & Engineering, 7(5), 507-519.
  Talnack, Felix; Hutsch, Sebastian; Bretschneider, Michael; Krupskaya, Yulia; Büchner, Bernd; Malfois, Marc; Hambsch, Mike; Ortmann, Frank & Mannsfeld, Stefan C. B.