{
  "abstract": "Fast-neutron scintillators must efficiently convert neutron energy into detectable light while enabling selectivity between neutrons and the γ-ray background. Here, we report a synthesis strategy for layered two-dimensional (2D) lead halide perovskite scintillators with independent control of the macroscopic detector geometry and microscopic phase composition. Our synthesis approach produces mm-thick, large-area scintillators with a deliberately engineered multi-quantum-well energy landscape, creating an effective spectral separation while retaining nanosecond emission dynamics. Our scintillators exhibit an energy resolution of 5.4% at 662 keV under 137Cs irradiation. Under deuterium-deuterium fusion neutron irradiation, we directly demonstrate neutron and γ-ray event separation by pulse shape discrimination, with a figure of merit of 3.51. Taken together, these results establish multi-quantum-well 2D perovskites as a scalable materials platform that combines fast-neutron sensitivity and selectivity within a controllable detector form factor.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2609.28468",
  "author_total": 7,
  "authors": [
    {
      "name": "Shaun Tan"
    },
    {
      "name": "Zachary Benesh"
    },
    {
      "name": "Seong Eui Chang"
    },
    {
      "name": "Shelby Elder"
    },
    {
      "name": "Haidi Jakovic"
    },
    {
      "name": "Tae-Woo Lee"
    },
    {
      "name": "Moungi G. Bawendi"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ee0drbdyxy6ef.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2609.28468",
  "fulltext_url": null,
  "id": "ee0drbdyxy6ef",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2609.28468",
  "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.mtrl-sci"
    ],
    [
      "arxiv",
      "physics.chem-ph"
    ],
    [
      "arxiv",
      "physics.ins-det"
    ],
    [
      "openalex",
      "3108|Radiation Detection and Scintillator Technologies"
    ]
  ],
  "openalex": "W7214167782",
  "pdf_url": "https://arxiv.org/pdf/2609.28468",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-23",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/ee0drbdyxy6ef.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:23:56Z",
      "native_id": "2609.28468",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2609.28468"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "arxiv:physics.chem-ph",
      "subfield": "physical"
    },
    {
      "field": "physics",
      "origin": "arxiv:physics.ins-det",
      "subfield": "applied-instrumentation"
    },
    {
      "field": "physics",
      "origin": "arxiv:cond-mat.mtrl-sci",
      "subfield": "condensed-matter"
    }
  ],
  "title": "Fast-Neutron Scintillation with Multi-Quantum-Well 2D Perovskites",
  "title_text": "Fast-Neutron Scintillation with Multi-Quantum-Well 2D Perovskites",
  "type": "preprint",
  "updated_at": "2026-10-30T12:23:56Z",
  "url": "https://research.draconitic.com/paper/ee0drbdyxy6ef",
  "venue": "arXiv",
  "versions": []
}