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@INPROCEEDINGS{Peng:1044679,
      author       = {Peng, Zijian and Lüer, Larry and Brabec, Christoph},
      title        = {{L}ocating the non-radiative recombination losses of
                      perovskite solar cells during accelerated ageing},
      publisher    = {FUNDACIO DE LA COMUNITAT VALENCIANA SCITO València},
      reportid     = {FZJ-2025-03328},
      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.2025.003},
      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.2025.003},
      abstract     = {The commercialization of perovskite solar cells (PSCs)
                      depends on breakthroughs in stability, yet the complex
                      degradation mechanisms complicate the study of their
                      long-term performance. This work investigates the role of
                      non-radiative recombination in PSC stability by establishing
                      a quantitative link between defect-related parameters and
                      device performance. We found that defect-induced minor
                      losses in open-circuit voltage (VOC) are accompanied by
                      significant reductions in charge extraction efficiency
                      (short-circuit current and fill factor). Through
                      non-destructive, contactless photoluminescence
                      characterization, we decoupled non-radiative recombination
                      effects in various perovskite stacks before and after
                      accelerated ageing. The quasi-Fermi level splitting (QFLS)
                      losses in devices during the ageing process primarily
                      originate from the perovskite bulk rather than the
                      interfaces, with most of these losses occurring within the
                      first 50 hours of ageing. We find that optimizing perovskite
                      composition and improving crystal quality to suppress defect
                      formation during ageing can extend photo-thermal stability
                      by more than a factor of 50.},
      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          = {1213 - Cell Design and Development (POF4-121)},
      pid          = {G:(DE-HGF)POF4-1213},
      typ          = {PUB:(DE-HGF)8 / PUB:(DE-HGF)7},
      doi          = {10.29363/nanoge.hopv.2025.003},
      url          = {https://juser.fz-juelich.de/record/1044679},
}