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@ARTICLE{Sun:1042652,
      author       = {Sun, Lulu and Fukuda, Kenjiro and Guo, Ruiqi and
                      Castriotta, Luigi A. and Forberich, Karen and Zhou, Yinhua
                      and Someya, Takao and Brabec, Christoph J. and Almora,
                      Osbel},
      title        = {{A} {F}lexible {P}hotovoltaic {F}atigue {F}actor for
                      {Q}uantification of {M}echanical {D}evice {P}erformance},
      journal      = {Advanced functional materials},
      volume       = {35},
      number       = {19},
      issn         = {1616-301X},
      address      = {Weinheim},
      publisher    = {Wiley-VCH},
      reportid     = {FZJ-2025-02633},
      pages        = {2422706},
      year         = {2025},
      abstract     = {Flexible emerging photovoltaic technologies, such as
                      organic and perovskite photovoltaics, hold great potential
                      for integration into tents, wearable electronics, and other
                      portable applications. Recently, Fukuda et al. (2024)
                      propose a bending test protocol for standardizing the
                      mechanical performance characterization of flexible solar
                      cells, focusing on $1\%$ strain over 1 000 bending cycles.
                      This marked an important step toward establishing
                      consistency and good practices in the literature. However,
                      even with this unified protocol, accurately comparing the
                      mechanical flexibility of solar cells is hindered by the
                      variated influence of parameters like thickness, bending
                      radius, and power conversion efficiency (PCE) evolution
                      during mechanical testing. Herein, a new figure of merit is
                      introduced, the flexible photovoltaic fatigue factor (F),
                      which integrates PCE retention, strain, and bending cycles
                      into a cohesive framework. Guided by a detailed multilayer
                      mechanical model, this metric enables more accurate strain
                      analysis and promotes consistent reporting, paving the way
                      for performance optimization in flexible photovoltaics.},
      cin          = {IET-2},
      ddc          = {530},
      cid          = {I:(DE-Juel1)IET-2-20140314},
      pnm          = {1214 - Modules, stability, performance and specific
                      applications (POF4-121)},
      pid          = {G:(DE-HGF)POF4-1214},
      typ          = {PUB:(DE-HGF)16},
      UT           = {WOS:001389848300001},
      doi          = {10.1002/adfm.202422706},
      url          = {https://juser.fz-juelich.de/record/1042652},
}