{
  "abstract": "Colloidal lead sulfide (PbS) nanocrystals (NCs) are emerging as cost-effective, solutionprocessable materials for infrared (IR) detection. Their use in a space environment is conditioned by their radiation tolerance. This study investigates the intrinsic robustness of PbS NC-based photoconductive devices to high-dose X-ray irradiation (up to 1.6 Grad [PbS]), far above requirement for deep-space operation. PbS NC films exhibit gradual performance degradation without abrupt thresholds, attributed to their polycrystalline nature, which localizes defects and mitigates long-range lattice disruption. Optoelectronic measurements reveal a drop in both the dark and illuminated response, yet the signal-to-noise ratio improves due to the faster decay of dark current. Spectroscopic analyses (XPS/HAXPES) confirm that the conductivity change can be attributed to X-ray-induced oxidation, which affects both Pb and S, forming sulfate and lead hydroxide phases that propagate throughout the NC volume. This oxidation reduces the effective NC size, blue-shifting the excitonic peak. Despite this, PbS NCs exhibit exceptional radiation hardness, comparable to that of radiation-hardened CMOS devices. These findings position PbS NCs as viable candidates for space-born IR detection, especially in oxygen-free environments where oxidation is naturally limited.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 19,
  "authors": [
    {
      "name": "Diogo Almeida"
    },
    {
      "name": "Alexandre Neyret"
    },
    {
      "name": "Clement Gureghian"
    },
    {
      "name": "Dario Mastrippolito"
    },
    {
      "name": "Adrien Khalili"
    },
    {
      "name": "Albin Colle"
    },
    {
      "name": "Marco Paye"
    },
    {
      "name": "Mariarosa Cavallo"
    },
    {
      "name": "Dipak Maity"
    },
    {
      "name": "Jiho Roh"
    },
    {
      "name": "Clémence Villefroy"
    },
    {
      "name": "Sandrine Ithurria"
    },
    {
      "name": "Debora Pierucci"
    },
    {
      "name": "Stephane Demiguel"
    },
    {
      "name": "Sebastien Massenot"
    },
    {
      "name": "Jean- Marc Belloir"
    },
    {
      "name": "Cedric Virmontois"
    },
    {
      "name": "Vincent Goiffon"
    },
    {
      "name": "Emmanuel Lhuillier"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ec8y5jp8x10bk.bib",
  "cited_by": 0,
  "doi": "10.1088/1361-6528/aea6e2",
  "fulltext_url": null,
  "id": "ec8y5jp8x10bk",
  "issns": [
    "0957-4484",
    "1361-6528"
  ],
  "landing_url": "https://hal.science/hal-05760266v1",
  "language": "en",
  "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": [
    [
      "hal",
      "0.phys"
    ],
    [
      "openalex",
      "2505|Quantum Dots Synthesis And Properties"
    ]
  ],
  "openalex": "W7213164661",
  "pdf_url": "https://hal.science/hal-05760266/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-14",
  "publisher": "Institute of Physics",
  "ris": "https://research.draconitic.com/paper/ec8y5jp8x10bk.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:39Z",
      "native_id": "hal-05760266",
      "source": "hal",
      "url": "https://hal.science/hal-05760266v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|Quantum Dots Synthesis And Properties",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Hardness of PbS nanocrystal-based photoconductor to X-ray irradiation",
  "title_text": "Hardness of PbS nanocrystal-based photoconductor to X-ray irradiation",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:39Z",
  "url": "https://research.draconitic.com/paper/ec8y5jp8x10bk",
  "venue": "Nanotechnology",
  "versions": []
}