{
  "abstract": "Tin halide perovskites are promising lead-free semiconductors for next-generation electronics; however, their implementation is constrained by a fragile crystal framework, facile Sn²⁺ oxidation, and rapid crystallization kinetics. Here, we establish a molecular design principle for non-metallic thiocyanate (SCN⁻) additives that stabilizes the formamidinium tin iodide (FASnI₃) lattice and enables high-performance, stable p-channel thin-film transistors (TFTs). Density functional theory calculations reveal that the Sn-X-Sn bond strength in the lattice and the halide migration barriers can be tuned by the size of the A-site cation and its hydrogen-bonding capability with SCN⁻ and I⁻. In particular, we find that both the Sn-SCN-Sn bonding interaction and the iodine migration barrier are maximized when guanidinium thiocyanate (GuaSCN) is employed. Consistently, GuaSCN enhances the crystallinity and grain size of tens-of-nanometer-thick FASnI₃ films, prolongs carrier lifetimes, and suppresses Sn⁴⁺ formation, without altering the intrinsic bandgap. TFTs incorporating GuaSCN achieve a field-effect mobility above 88 cm² V⁻¹ s⁻¹, an Ion/off ratio exceeding 4 × 10⁹, negligible hysteresis, and superior operational and shelf stability across hundreds of devices.",
  "abstract_shown": true,
  "affiliations": [
    "Department of Organic and Nano Engineering, Hanyang University, Seoul 04763, Korea.",
    "Human-Tech Convergence Program, Hanyang University, Seoul 04763, Korea.",
    "Department of Chemical Engineering, Hanyang University, Seoul 04763, Korea.",
    "Department of Semiconductor Engineering, Hanyang University, Seoul 04763, Korea.",
    "Institute of Nano Science and Technology, Hanyang University, Seoul 04763, Korea."
  ],
  "article_type": "Research Article",
  "arxiv": null,
  "author_total": 7,
  "authors": [
    {
      "affs": [
        0,
        1
      ],
      "name": "Bum Ho Jeong",
      "orcid": "0000-0002-9852-8270"
    },
    {
      "affs": [
        2
      ],
      "name": "Cheong Beom Lee",
      "orcid": "0000-0002-1997-3123"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Hansol Park",
      "orcid": "0000-0002-6806-7637"
    },
    {
      "affs": [
        3
      ],
      "name": "Seung Yoon Shin",
      "orcid": "0009-0005-9034-7124"
    },
    {
      "affs": [
        3
      ],
      "name": "Soobin Heo",
      "orcid": "0009-0001-5636-7325"
    },
    {
      "affs": [
        2
      ],
      "name": "Kyeounghak Kim",
      "orcid": "0000-0003-1297-6038"
    },
    {
      "affs": [
        0,
        1,
        3,
        4
      ],
      "name": "Hui Joon Park",
      "orcid": "0000-0003-4607-207X"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/bc6718yxe28vs.bib",
  "cited_by": 0,
  "doi": "10.1126/sciadv.aeh2062",
  "fulltext_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13721964/?tool=EBI",
  "id": "bc6718yxe28vs",
  "issns": [
    "2375-2548"
  ],
  "landing_url": "https://www.science.org/doi/abs/10.1126/sciadv.aeh2062",
  "language": "eng",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Engineering"
    ],
    [
      "heading",
      "Materials Science"
    ],
    [
      "heading",
      "Physical and Materials Sciences"
    ],
    [
      "heading",
      "Research Article"
    ],
    [
      "heading",
      "SciAdv r-articles"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13721964/pdf/?tool=EBI",
  "pmcid": "PMC13721964",
  "pmid": "42962013",
  "published": "2026-10-30",
  "publisher": "American Association for the Advancement of Science (AAAS)",
  "ris": "https://research.draconitic.com/paper/bc6718yxe28vs.ris",
  "sources": [
    {
      "first_seen": "2026-10-31T00:20:30Z",
      "native_id": "10.1126/sciadv.aeh2062",
      "source": "feed-science",
      "url": "https://www.science.org/doi/abs/10.1126/sciadv.aeh2062"
    },
    {
      "first_seen": "2026-10-31T00:20:32Z",
      "native_id": "10.1126/sciadv.aeh2062",
      "source": "crossref",
      "url": "https://www.science.org/doi/10.1126/sciadv.aeh2062"
    },
    {
      "first_seen": "2026-10-31T12:21:37Z",
      "native_id": "PMC:PMC13721964",
      "source": "europepmc",
      "url": "https://europepmc.org/article/PMC/PMC13721964"
    },
    {
      "first_seen": "2026-11-02T03:21:21Z",
      "native_id": "MED:42962013",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42962013"
    },
    {
      "first_seen": "2026-11-03T12:22:33Z",
      "native_id": "PMC13721964",
      "source": "pmc",
      "url": "https://doi.org/10.1126/sciadv.aeh2062"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "heading:Materials Science",
      "subfield": "materials-polymers"
    }
  ],
  "title": "A-site cation–pseudohalide co-design for tin halide perovskite transistors",
  "title_text": "A-site cation–pseudohalide co-design for tin halide perovskite transistors",
  "type": "peer-reviewed",
  "updated_at": "2026-11-03T12:22:33Z",
  "url": "https://research.draconitic.com/paper/bc6718yxe28vs",
  "venue": "Science Advances",
  "versions": []
}