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@INPROCEEDINGS{Ammirati:1044680,
      author       = {Ammirati, Giuseppe and Catone, Daniele and Toschi,
                      Francesco and O'Keeffe, Patrick and Paladini, Alessandra and
                      Mattioli, Giuseppe and Moras, Paolo and Turchini, Stefano
                      and Miliotti, Valeria and Brabec, Christoph and Wagner,
                      Michael and McCulloch, Iain and Di Carlo, Aldo and
                      Sheverdyaeva, Polina},
      title        = {{H}ole {T}ransfer {D}ynamics and {O}ptoelectronic
                      {P}roperties in {PCE}10:{FOIC} {B}lends for {O}rganic
                      {P}hotovoltaics},
      publisher    = {FUNDACIO DE LA COMUNITAT VALENCIANA SCITO València},
      reportid     = {FZJ-2025-03329},
      pages        = {},
      year         = {2025},
      comment      = {Proceedings of the International Conference on Hybrid and
                      Organic Photovoltaics - FUNDACIO DE LA COMUNITAT VALENCIANA
                      SCITO València, 2025. - ISBN -
                      doi:10.29363/nanoge.hopv.2025.074},
      booktitle     = {Proceedings of the International
                       Conference on Hybrid and Organic
                       Photovoltaics - FUNDACIO DE LA
                       COMUNITAT VALENCIANA SCITO València,
                       2025. - ISBN -
                       doi:10.29363/nanoge.hopv.2025.074},
      abstract     = {The development of high-performance organic photovoltaic
                      materials has gained significant attention due to their
                      potential for low-cost, flexible, and lightweight solar
                      energy solutions, including semi-transparent photovoltaics
                      for building-integrated applications.[1] Central to this
                      effort is the optimization of donor-acceptor blends, where
                      efficient charge transfer and exciton dynamics are critical
                      for enhancing device efficiency.[2] Among the promising
                      materials, the blend of PCE10, a polymer donor, and FOIC, a
                      non-fullerene acceptor, has shown considerable potential due
                      to its strong near-infrared absorption and favorable energy
                      level alignment.[3] In this work, we present a comprehensive
                      investigation into the hole transfer dynamics and
                      optoelectronic properties of a blend material for organic
                      photovoltaic applications. Through a combination of
                      theoretical modeling and experimental analysis, we aim to
                      deepen the understanding of the role of the electronic and
                      excitonic structures in the dynamics that govern the charge
                      separation. We calculated the energy levels and the
                      absorption spectra by DFT for the individual PCE10 and FOIC
                      molecules as well as their blended configurations. In
                      parallel, we performed extensive experimental
                      investigations, including photoelectron spectroscopy (PES)
                      and femtosecond transient absorption spectroscopy, to
                      explore the photo-physical properties of PCE10, FOIC, and
                      their blend. PES measurements allowed us to estimate the
                      ionization energy and electron affinity of the materials,
                      which are critical for understanding the energy level
                      alignment in the blend. The temporal dynamics of the
                      excitons in the blend were further analyzed to unravel the
                      recombination mechanisms that were dominated by the
                      exciton-exciton annihilation (EEA). By comparing the decay
                      times with different probe energies, we show how the hole
                      transfer processes from acceptor to donor within the blend
                      affect the efficiency of the EEA mechanism. These findings
                      deepen our understanding of the complex interactions between
                      donor and acceptor materials in organic photovoltaic
                      systems, providing valuable insights into the recombination
                      processes and charge transfer mechanisms in organic blends.},
      month         = {May},
      date          = {2025-05-12},
      organization  = {12º nternational Conference on Hybrid
                       and Organic Photovoltaics, Roma
                       (Italy), 12 May 2025 - 14 May 2025},
      cin          = {IET-2},
      cid          = {I:(DE-Juel1)IET-2-20140314},
      pnm          = {1212 - Materials and Interfaces (POF4-121) / 1214 -
                      Modules, stability, performance and specific applications
                      (POF4-121)},
      pid          = {G:(DE-HGF)POF4-1212 / G:(DE-HGF)POF4-1214},
      typ          = {PUB:(DE-HGF)8 / PUB:(DE-HGF)7},
      doi          = {10.29363/nanoge.hopv.2025.074},
      url          = {https://juser.fz-juelich.de/record/1044680},
}