{
  "abstract": "Infrared detection and imaging are important for applications including thermal monitoring, night vision, environmental sensing, and molecular identification. All-optical mid-wave infrared (MWIR) and long-wave infrared (LWIR) detection offers a compelling alternative to conventional infrared detectors by enabling non-contact photothermal sensing without needing electronic readout circuitry. Here, we demonstrate pixelated LWIR imaging using solution-processed two-dimensional metal-halide perovskites (2D-MHPs), whose strong electron-phonon interaction produces a large temperature coefficient of reflectance in the visible wavelength range. By integrating (PEA) ₂ PbI ₄ films with LWIR-absorbing SiNₓ membranes, we realize centimeter-scale imagers capable of detecting 9.5-µm LWIR light with sensitivity down to ~20 pW·µm⁻². To mitigate lateral thermal diffusion that limits spatial fidelity, we introduce a structured-probe illumination scheme, and we further develop a fully pixelated imager with thermally isolated membrane-disc arrays. This design effectively eliminates pixel-to-pixel crosstalk and enables high-resolution optical readout using a silicon-based CMOS camera. These advances establish 2D-MHP-based all-optical thermal imaging as a scalable, low-cost platform for LWIR sensing, with strong potential for extension to far-infrared and terahertz detection.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 14,
  "authors": [
    {
      "name": "Yanyan Li",
      "orcid": "0000-0002-4226-6961"
    },
    {
      "name": "Zheng Qian"
    },
    {
      "name": "Du Chen",
      "orcid": "0000-0002-7604-8786"
    },
    {
      "name": "Conrad A. Kocoj"
    },
    {
      "name": "Shunran Li"
    },
    {
      "name": "Renee Wu"
    },
    {
      "name": "Xiang Shi"
    },
    {
      "name": "Ralu Divan"
    },
    {
      "name": "David A. Czaplewski",
      "orcid": "0000-0003-2262-0908"
    },
    {
      "name": "Benjamin T. Diroll",
      "orcid": "0000-0003-3488-0213"
    },
    {
      "name": "Ming Lu",
      "orcid": "0000-0003-0175-6531"
    },
    {
      "name": "Yugang Zhang"
    },
    {
      "name": "Shu Hu"
    },
    {
      "name": "Peijun Guo",
      "orcid": "0000-0001-5732-7061"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/347h1zer78qan.bib",
  "cited_by": 0,
  "doi": "10.1038/s41377-026-02442-y",
  "fulltext_url": "https://europepmc.org/articles/PMC13724749",
  "id": "347h1zer78qan",
  "issns": [
    "2047-7538",
    "2095-5545"
  ],
  "landing_url": "https://www.nature.com/articles/s41377-026-02442-y",
  "language": "eng",
  "licence": "CC-BY-4.0",
  "licence_label": "CC BY 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "Article"
    ],
    [
      "openalex",
      "2208|Advanced Semiconductor Detectors and Materials"
    ]
  ],
  "openalex": "W7225054629",
  "pdf_url": "https://www.nature.com/articles/s41377-026-02442-y.pdf",
  "pmcid": "PMC13724749",
  "pmid": "42967948",
  "published": "2026-11-02",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/347h1zer78qan.ris",
  "sources": [
    {
      "first_seen": "2026-11-02T12:21:52Z",
      "native_id": "10.1038/s41377-026-02442-y",
      "source": "crossref",
      "url": "https://www.nature.com/articles/s41377-026-02442-y"
    },
    {
      "first_seen": "2026-11-03T15:20:53Z",
      "native_id": "MED:42967948",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42967948"
    },
    {
      "first_seen": "2026-11-04T12:23:16Z",
      "native_id": "PMC13724749",
      "source": "pmc",
      "url": "https://doi.org/10.1038/s41377-026-02442-y"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "issn:2047-7538",
      "subfield": "optics-photonics"
    }
  ],
  "title": "All-optical 2D perovskite photodetector arrays for pixelated long-wave infrared imaging",
  "title_text": "All-optical 2D perovskite photodetector arrays for pixelated long-wave infrared imaging",
  "type": "peer-reviewed",
  "updated_at": "2026-11-06T12:21:09Z",
  "url": "https://research.draconitic.com/paper/347h1zer78qan",
  "venue": "Light: Science & Applications",
  "versions": []
}