{
  "abstract": "Colloidal quantum dots (CQDs) short-wave infrared (SWIR) detectors (1-2 µm) are of great interest for a plethora of applications including autonomous driving, machine vision, night and adverse weather imaging, in view of their low-cost and compatibility to read-out electronics. However, to date, CQDs photodetectors still suffer from high dark current and thereby noise such that their performance remains inferior to epitaxially grown III-V semiconductors. This performance gap originates from the limited passivation of non-polar surfaces existent in large PbS CQDs needed to access the SWIR spectral range. Here we report on a lead-thiolate based chemistry that serves to passivate both polar and non-polar surfaces of PbS CQDs yielding inks with unprecedented optoelectronic quality evidenced by open circuit voltage deficit and dark current activation energies matching those of single crystalline semiconductors. As a result, we demonstrate infrared photodetectors with remarkable thermal resilience, very low dark current density ( ~ 34 nA cm ⁻² at −1 V) and a specific detectivity D* of ~8×10 ¹² Jones. The measured D* value is on par with that of commercially available InGaAs photodiodes (PDs).",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 7,
  "authors": [
    {
      "name": "Debranjan Mandal"
    },
    {
      "name": "Yongjie Wang",
      "orcid": "0000-0003-1908-2483"
    },
    {
      "name": "Carmelita Rodá"
    },
    {
      "name": "Miguel Dosil"
    },
    {
      "name": "Gaurav Kumar"
    },
    {
      "name": "Lucheng Peng",
      "orcid": "0000-0002-4015-4114"
    },
    {
      "name": "Gerasimos Konstantatos",
      "orcid": "0000-0001-7701-8127"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/fprk0y8nbj1x3.bib",
  "cited_by": 0,
  "doi": "10.1038/s41467-026-78740-1",
  "fulltext_url": null,
  "id": "fprk0y8nbj1x3",
  "issns": [
    "2041-1723"
  ],
  "landing_url": "https://www.nature.com/articles/s41467-026-78740-1",
  "language": null,
  "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": [
    [
      "openalex",
      "2505|Quantum Dots Synthesis And Properties"
    ]
  ],
  "openalex": "W7223183797",
  "pdf_url": "https://www.nature.com/articles/s41467-026-78740-1_reference.pdf",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-22",
  "publisher": "Springer Science and Business Media LLC",
  "ris": "https://research.draconitic.com/paper/fprk0y8nbj1x3.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:39Z",
      "native_id": "10.1038/s41467-026-78740-1",
      "source": "crossref",
      "url": "https://www.nature.com/articles/s41467-026-78740-1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|Quantum Dots Synthesis And Properties",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Non-polar surface passivation of PbS Quantum Dots using metal thiolates enables photodiodes rivaling InGaAs performance",
  "title_text": "Non-polar surface passivation of PbS Quantum Dots using metal thiolates enables photodiodes rivaling InGaAs performance",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:39Z",
  "url": "https://research.draconitic.com/paper/fprk0y8nbj1x3",
  "venue": "Nature Communications",
  "versions": []
}