{
  "abstract": "We present an equivalent-circuit analysis that simultaneously considers the photoluminescence and electrical responses of valley photovoltaic devices. Valley photovoltaics (VPV) are a novel concept for hot-carrier solar cells, where intervalley scattering of electrons in the absorbing material helps maintain the conduction-band electron populations at metastable satellite valleys, which are at energies higher than the conduction-band minimum. We measure intensity- and voltage-dependent photoluminescence and electrical signals of a VPV device, which has previously shown S-shaped current-voltage characteristics and thus low efficiency. We present an equivalent circuit that captures the S-shaped current-voltage curves and simultaneously describes our photoluminescence and electric measurements. The equivalent-circuit model indicates that a reverse diode causes inefficient extraction of electrons and thus the S shape. We use a Poisson/drift-diffusion model to demonstrate that the reverse diode can be either explained by the valley-scattering process itself or a heterojunction barrier. The reverse diode must be eliminated before VPV devices can achieve high efficiency.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.37854",
  "author_total": 12,
  "authors": [
    {
      "name": "Daixi Xia"
    },
    {
      "name": "Abhinav S. Sharma"
    },
    {
      "name": "Andreas Pusch"
    },
    {
      "name": "Murad J. Y. Tayebjee"
    },
    {
      "name": "Michael P. Nielsen"
    },
    {
      "name": "Fiacre E. Rougieux"
    },
    {
      "name": "Kyle R. Dorman"
    },
    {
      "name": "Tetsuya D. Mishima"
    },
    {
      "name": "Michael B. Santos"
    },
    {
      "name": "Ian R. Sellers"
    },
    {
      "name": "Nicholas J. Ekins-Daukes"
    },
    {
      "name": "Jacob J. Krich"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/e4ncbmqyakwny.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.37854",
  "fulltext_url": null,
  "id": "e4ncbmqyakwny",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.37854",
  "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",
      "physics.app-ph"
    ],
    [
      "openalex",
      "2505|2D Materials and Applications"
    ]
  ],
  "openalex": "W7214950222",
  "pdf_url": "https://arxiv.org/pdf/2609.37854",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-29",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/e4ncbmqyakwny.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:25:31Z",
      "native_id": "2609.37854",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.37854"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:physics.app-ph",
      "subfield": "applied-instrumentation"
    }
  ],
  "title": "Combined photoluminescence and electrical characterization of valley photovoltaic devices explained with an equivalent circuit",
  "title_text": "Combined photoluminescence and electrical characterization of valley photovoltaic devices explained with an equivalent circuit",
  "type": "preprint",
  "updated_at": "2026-10-30T12:25:31Z",
  "url": "https://research.draconitic.com/paper/e4ncbmqyakwny",
  "venue": "arXiv",
  "versions": []
}