{
  "abstract": "Operational instability remains a key obstacle for halide perovskites in neuromorphic optoelectronics, where sustained and reproducible photoresponses are required for in-sensor computing. Here, we report vapor-phase growth of composition-tunable two-dimensional (2D) inorganic perovskites, Cs x Rb₁₋ x PbBr₃ (0 ≤ x ≤ 1), and show that A-site cation alloying provides an effective route to simultaneously improve optical performance and structural robustness. By mapping the full Cs-Rb compositional space, we identify a narrow intermediate regime (x ≈ 0.8) where lattice strain is minimized and defect formation is suppressed. Perovskites in this regime exhibit substantially enhanced resistance to moisture, thermal stress and ion migration compared with either end member. These stability gains translate directly to device operation, enabling broadband photodetectors with fast response, high reproducibility and long-term durability. Using the optimized Cs0.81Rb0.19PbBr₃ composition, we further demonstrate optoelectronic synaptic devices that reproduce key synaptic functions, including paired-pulse facilitation and light-programmable synaptic weights. Integrated into a spiking neural network, the devices enable real-time fire detection with 85% accuracy while maintaining stable performance over 7 days. This work establishes composition-engineered 2D inorganic perovskites as a robust platform for neuromorphic vision and energy-efficient in-sensor computing.",
  "abstract_shown": true,
  "affiliations": [
    "College of Physics Science and Technology, Hebei University, Baoding 071002, China.",
    "School of Advanced Technology, Xi'an Jiaotong-Liverpool University, Suzhou 215123, China.",
    "Department of Electrical Engineering and Electronics, University of Liverpool, Liverpool L69 3BX, UK.",
    "College of Physics and Electronic Engineering, Hengyang Normal University, Hengyang 421008, China.",
    "College of Advanced Interdisciplinary Studies & Hunan Provincial Key Laboratory of Novel Nano-Optoelectronic Information Materials and Devices, National University of Defense Technology, Changsha 410073, China.",
    "Hunan Institute of Optoelectronic Integration, College of Materials Science and Engineering, Hunan University, Changsha 410082, China.",
    "School of Physics and Electronics, Hunan Normal University, Changsha 410081, China."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 18,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Honglai Li",
      "orcid": "0000-0002-4321-1807"
    },
    {
      "affs": [
        0
      ],
      "name": "Wei Li"
    },
    {
      "affs": [
        1,
        2
      ],
      "name": "Herong Sheng"
    },
    {
      "affs": [
        0
      ],
      "name": "Changhao Liu"
    },
    {
      "affs": [
        0
      ],
      "name": "Wenjun Yang"
    },
    {
      "affs": [
        3
      ],
      "name": "Jinpeng Zhao"
    },
    {
      "affs": [
        0
      ],
      "name": "Shida Feng"
    },
    {
      "affs": [
        4
      ],
      "name": "Biyuan Zheng"
    },
    {
      "affs": [
        4
      ],
      "name": "Chenglin He"
    },
    {
      "affs": [
        0
      ],
      "name": "Jiahuan Ren"
    },
    {
      "affs": [
        3
      ],
      "name": "Liang Ma"
    },
    {
      "affs": [
        4
      ],
      "name": "Tingzhao Fu"
    },
    {
      "affs": [
        1
      ],
      "name": "Chun Zhao"
    },
    {
      "affs": [
        1
      ],
      "name": "Yuxiao Fang"
    },
    {
      "affs": [
        4
      ],
      "name": "Weihao Zheng"
    },
    {
      "affs": [
        5
      ],
      "name": "Dong Li"
    },
    {
      "affs": [
        4
      ],
      "name": "Zhihong Zhu"
    },
    {
      "affs": [
        5,
        6
      ],
      "name": "Anlian Pan",
      "orcid": "0000-0003-3335-3067"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/ekrhf8vcdnwc6.bib",
  "cited_by": 0,
  "doi": "10.1093/nsr/nwag453",
  "fulltext_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13717458/?tool=EBI",
  "id": "ekrhf8vcdnwc6",
  "issns": [
    "2095-5138",
    "2053-714X"
  ],
  "landing_url": "https://europepmc.org/article/PMC/PMC13717458",
  "language": "eng",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "heading",
      "AcademicSubjects/MED00010"
    ],
    [
      "heading",
      "AcademicSubjects/SCI00010"
    ],
    [
      "heading",
      "Materials Science"
    ],
    [
      "heading",
      "Nsr/4"
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    [
      "heading",
      "Research Article"
    ],
    [
      "openalex",
      "2208|Perovskite Materials and Applications"
    ]
  ],
  "openalex": "W7170044579",
  "pdf_url": "https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13717458/pdf/?tool=EBI",
  "pmcid": "PMC13717458",
  "pmid": "42959716",
  "published": "2026-07-22",
  "publisher": "Oxford University Press",
  "ris": "https://research.draconitic.com/paper/ekrhf8vcdnwc6.ris",
  "sources": [
    {
      "first_seen": "2026-10-31T00:20:39Z",
      "native_id": "PMC:PMC13717458",
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      "url": "https://europepmc.org/article/PMC/PMC13717458"
    },
    {
      "first_seen": "2026-10-31T12:21:46Z",
      "native_id": "MED:42959716",
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      "url": "https://europepmc.org/article/MED/42959716"
    },
    {
      "first_seen": "2026-11-02T12:21:46Z",
      "native_id": "PMC13717458",
      "source": "pmc",
      "url": "https://doi.org/10.1093/nsr/nwag453"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "heading:Materials Science",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Composition-engineered intrinsic stability in 2D perovskite optoelectronic synapses for neuromorphic vision",
  "title_text": "Composition-engineered intrinsic stability in 2D perovskite optoelectronic synapses for neuromorphic vision",
  "type": "peer-reviewed",
  "updated_at": "2026-11-02T12:21:46Z",
  "url": "https://research.draconitic.com/paper/ekrhf8vcdnwc6",
  "venue": "National science review",
  "versions": []
}