{
  "abstract": "Deep-blue-emitting CuBr quantum dots (QDs) hold promise as nontoxic and heavy-metal-free optoelectronic materials, yet their efficiency is limited by intrinsic defects. We report Zn doping as an effective strategy to mitigate defect-mediated recombination in CuBr QDs synthesized via an eco-friendly supersaturated recrystallization method under ambient conditions. XRD shows lattice contraction, Rietveld refinement confirms substitutional doping, and XPS verifies Cu$^+$/ Zn$^{2+}$ states without secondary phases. HR-TEM analysis reveals uniform 3.46 $\\pm$ 0.12 nm Zn:CuBr QDs with reduced bandgap, after doping, indicating weaker quantum confinement. The dominant emission peaks appear at 406 nm ($Z_f$) and 431 nm ($Z_{1,2}$) under 365 nm excitation. Narrows defect FWHM, elevated band-edge emission, and extends carrier lifetimes, achieving 96.4 \\% color purity with CIE coordinates (0.1520, 0.0395). These findings demonstrate that Zn doping is a simple, scalable, and environmentally benign strategy for engineering efficient blue-emitting CuBr QDs.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.26844",
  "author_total": 6,
  "authors": [
    {
      "name": "Aryamol Stephen"
    },
    {
      "name": "Ruchi Kumari"
    },
    {
      "name": "Saparja Roy"
    },
    {
      "name": "P. Jayaram"
    },
    {
      "name": "A. Biju"
    },
    {
      "name": "P. M. Sarun"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/226tbnxfr6krm.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.26844",
  "fulltext_url": null,
  "id": "226tbnxfr6krm",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.26844",
  "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",
      "cond-mat.mes-hall"
    ],
    [
      "arxiv",
      "cond-mat.mtrl-sci"
    ],
    [
      "openalex",
      "2505|Quantum Dots Synthesis And Properties"
    ]
  ],
  "openalex": "W7214230694",
  "pdf_url": "https://arxiv.org/pdf/2609.26844",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-22",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/226tbnxfr6krm.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:56Z",
      "native_id": "2609.26844",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.26844"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mes-hall",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Suppressed Defect Emission and Enhanced Blue Luminescence of Zn-Doped CuBr Quantum Dots synthesized in Room-Temperature Synthesis",
  "title_text": "Suppressed Defect Emission and Enhanced Blue Luminescence of Zn-Doped CuBr Quantum Dots synthesized in Room-Temperature Synthesis",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:56Z",
  "url": "https://research.draconitic.com/paper/226tbnxfr6krm",
  "venue": "arXiv",
  "versions": []
}