{
  "abstract": "Triple-junction photovoltaics offer a promising route to surpass the efficiency limitations of single-junction solar cells, yet existing high-performance architectures are predominantly rigid and relatively heavy, limiting their use in weight-sensitive applications. Here, we report, to the best of our knowledge, the first ultra-lightweight and flexible monolithic perovskiteperovskite–organic triple-junction tandem solar cells. The devices integrate 2.05 eV and 1.62 eV perovskite front and middle subcells with a 1.33 eV organic bulk-heterojunction rear subcell on a 10 μm flexible polyethylene terephthalate substrate. The champion tandem device achieves a power conversion efficiency of 24.1%, with an open-circuit voltage of 3.27 V, a short-circuit current density of 9.32 mA/cm2, and a fill factor of 79.0%, corresponding to a power-per-weight of 11.2 W/g. The device exhibits a stabilized PCE of 24.6% under maximumpower-point tracking and negligible hysteresis between forward and reverse voltage scans. External quantum efficiency measurements yield closely matched integrated photocurrent densities of 9.39, 9.39, and 9.21 mA/cm2 for the three subcells, confirming efficient spectral utilization and current matching. These results establish flexible perovskite–perovskiteorganic triple-junction tandems as a promising platform for high-specific-power photovoltaics and open opportunities for lightweight energy harvesting in aerospace, unmanned aerial vehicles, wearable electronics, and portable power systems.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 1,
  "authors": [
    {
      "name": "FURKAN H. ISIKGOR",
      "orcid": "0000-0003-0787-7991"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/a44nk77wfagzb.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15010188/v1",
  "fulltext_url": null,
  "id": "a44nk77wfagzb",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010188/v1",
  "language": null,
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2208|Perovskite Materials and Applications"
    ]
  ],
  "openalex": "W7221135482",
  "pdf_url": "https://chemrxiv.org/doi/pdf/10.26434/chemrxiv.15010188/v1",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-09",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/a44nk77wfagzb.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:22Z",
      "native_id": "10.26434/chemrxiv.15010188",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15010188/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "source:chemrxiv",
      "subfield": "general"
    }
  ],
  "title": "Ultra-lightweight Flexible Perovskite–Perovskite–Organic Triple-Junction Tandem Solar Cells",
  "title_text": "Ultra-lightweight Flexible Perovskite–Perovskite–Organic Triple-Junction Tandem Solar Cells",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:22Z",
  "url": "https://research.draconitic.com/paper/a44nk77wfagzb",
  "venue": "ChemRxiv",
  "versions": []
}