{
  "abstract": "While graphene/n-type silicon (Gr/n-Si) and PEDOT:PSS/n-Si solar cells offer a cost-effective alternative to conventional photovoltaics, achieving simultaneous high power conversion efficiency (PCE) and long-term environmental stability remains a formidable challenge. Here, we report the synergistic enhancement of both performance and stability in a planar trilayer PEDOT:PSS/Gr/n-Si Schottky junction architecture. By systematically benchmarking this hybrid device against pristine Gr/n-Si and PEDOT:PSS/n-Si reference cells fabricated on untextured substrates, we isolate the fundamental optoelectronic and barrier functions of the carbon lattice. Comprehensive analyses reveal that the PEDOT:PSS layer simultaneously functions as an anti-reflection coating, a moderate p-type dopant for the underlying graphene, and a conductivity enhancer, collectively optimizing interfacial charge transport. Consequently, the trilayer device achieves a PCE of 8.52%, markedly outperforming the pristine Gr/n-Si reference cell (4.56%). Crucially, the atomic impermeability of the graphene sheet serves as a robust environmental barrier. While bare PEDOT:PSS/n-Si junctions retained only ~29% of their initial efficiency after 75 days of ambient exposure, graphene shields the active junction from moisture-induced degradation of the hygroscopic PEDOT:PSS overlayer. This enables the trilayer device to retain approximately 90% of its initial efficiency over the same 75-day period. The complementary roles of graphene as both a highly crystalline charge transport interface and an impermeable protective barrier establish a highly effective strategy for engineering high-efficiency, environmentally stable hybrid photovoltaics.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.21563",
  "author_total": 5,
  "authors": [
    {
      "name": "Kentaro Nakajo"
    },
    {
      "name": "Hojun Im"
    },
    {
      "name": "Keiichiro Nishimura"
    },
    {
      "name": "Masahiro Teraoka"
    },
    {
      "name": "Masaya Kikuchi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/92fg8kqwbarq4.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.21563",
  "fulltext_url": null,
  "id": "92fg8kqwbarq4",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.21563",
  "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|Silicon and Solar Cell Technologies"
    ]
  ],
  "openalex": "W7222621556",
  "pdf_url": "https://arxiv.org/pdf/2610.21563",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-15",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/92fg8kqwbarq4.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:29:50Z",
      "native_id": "2610.21563",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.21563"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Synergistic Graphene and PEDOT:PSS Layers on Silicon for Enhanced Efficiency and Stability in Schottky Junction Solar Cells",
  "title_text": "Synergistic Graphene and PEDOT:PSS Layers on Silicon for Enhanced Efficiency and Stability in Schottky Junction Solar Cells",
  "type": "preprint",
  "updated_at": "2026-10-30T12:29:50Z",
  "url": "https://research.draconitic.com/paper/92fg8kqwbarq4",
  "venue": "arXiv",
  "versions": []
}