{
  "abstract": "The degradation mechanisms of organic solar cells (OSCs) have been studied primarily in spin-coated, laboratory-scale devices, whereas scalable processing modifies the device architecture, active-layer morphology, and underlying charge-transport and recombination properties. Whether these changes also alter how solar cells degrade remains unclear. Here, we compare spin-coated and fully roll-to-roll-compatible gravure-printed PM6:Y12 solar cells during $\\sim$1000 h of continuous illumination. Despite distinct initial properties and degradation signatures, the loss of power-conversion efficiency systematically follows the mobility-lifetime product $μτ$. Remarkably, ageing of the printed devices increases the recombination lifetime while strongly reducing charge-carrier mobility, showing that a longer lifetime alone does not imply improved device performance. The mobility reduction is accompanied by decreased PM6 lamellar order, whereas the additional open-circuit voltage loss originates predominantly from increased non-radiative recombination. Dark recovery further reveals a metastable contribution specific to the printed architecture. These results identify the mobility-lifetime product as a unifying physical descriptor for photodegradation, linking ageing-induced microscopic changes to macroscopic performance loss across spin-coated and scalable printed OSCs.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.22467",
  "author_total": 27,
  "authors": [
    {
      "name": "Maria Saladina"
    },
    {
      "name": "Paul Weitz"
    },
    {
      "name": "David Holzner"
    },
    {
      "name": "Chen Wang"
    },
    {
      "name": "Robert Eland"
    },
    {
      "name": "Svitlana Taranenko"
    },
    {
      "name": "Christopher Wöpke"
    },
    {
      "name": "Toni Seiler"
    },
    {
      "name": "Fabian Eller"
    },
    {
      "name": "Doyoung Sun"
    },
    {
      "name": "Alexander Ehm"
    },
    {
      "name": "Bekcy Joseph"
    },
    {
      "name": "Pelin Çiloğlu"
    },
    {
      "name": "Carmen Tretmans"
    },
    {
      "name": "Andreas Willert"
    },
    {
      "name": "Harald Kuhn"
    },
    {
      "name": "Roderick C. I. Mackenzie"
    },
    {
      "name": "Jan-Frederik Pietschmann"
    },
    {
      "name": "Martin Stoll"
    },
    {
      "name": "Yana Vaynzof"
    },
    {
      "name": "Dietrich R. T. Zahn"
    },
    {
      "name": "Safa Shoaee"
    },
    {
      "name": "Eva M. Herzig"
    },
    {
      "name": "Arved Carl Hübler"
    },
    {
      "name": "Thomas Heumüller"
    },
    {
      "name": "Christoph J. Brabec"
    },
    {
      "name": "Carsten Deibel"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/99c7t68daq897.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.22467",
  "fulltext_url": null,
  "id": "99c7t68daq897",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.22467",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ],
    [
      "openalex",
      "2208|Organic Electronics and Photovoltaics"
    ]
  ],
  "openalex": "W7214035470",
  "pdf_url": "https://arxiv.org/pdf/2609.22467",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-18",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/99c7t68daq897.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:19Z",
      "native_id": "2609.22467",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.22467"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Mobility-lifetime relation links photodegradation in spin-coated and gravure-printed organic solar cells",
  "title_text": "Mobility-lifetime relation links photodegradation in spin-coated and gravure-printed organic solar cells",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:19Z",
  "url": "https://research.draconitic.com/paper/99c7t68daq897",
  "venue": "arXiv",
  "versions": []
}