{
  "abstract": "The lead halide perovskite single crystals (SCs) have already emerged as a series of star materials for solar cells, lasers and detectors due to the complete crystal structure, fewer defects and grain boundaries. Previous studies have demonstrated that MASCN gas can convert delta-FAPbI3 films into alpha-FAPbI3 below the phase transition temperature. However, applying this strategy to the exploration of FAPbI3 SCs remains a challenge. Herein, we designed a constant-pressure gas diffusion setup to treat delta-FAPbI3 SCs with MASCN vapor, successfully obtaining photoactive alpha-FAPbI3 SCs with enhanced optoelectronic properties. X-ray detectors based on the processed SCs exhibited significantly improved performance, achieving a high sensitivity of 4.46 x 104 mu C Gyair -1 cm-2, a ratio of sensitivity to dark current density as high as 1.06 x 1012 mu s Gyair -1, and a detection limit as low as 150 nGyair s-1. Furthermore, due to the strong polarizing nature of sulfur, some SCN- ions formed stable bonds with Pb2+ in the crystal lattice, thereby enhancing the environmental stability of FAPbI3. The processed SCs maintained their phase purity without degradation after one month of storage in ambient conditions. This work offers a new strategy for repurposing delta-FAPbI3 SCs and advances the development of perovskite SC X-ray detectors.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 9,
  "authors": [
    {
      "name": "Gang Jin"
    },
    {
      "name": "Guangya Zheng"
    },
    {
      "name": "Xiaoqing Liu"
    },
    {
      "name": "Hong Li"
    },
    {
      "name": "Jiaqi Liu"
    },
    {
      "name": "Yinsheng Xu"
    },
    {
      "name": "Xianghua Zhang"
    },
    {
      "name": "Mengling Xia"
    },
    {
      "name": "Jiang Tang"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/816qnd4sqrbne.bib",
  "cited_by": 0,
  "doi": "10.1002/adom.202503807",
  "fulltext_url": null,
  "id": "816qnd4sqrbne",
  "issns": [
    "2195-1071"
  ],
  "landing_url": "https://hal.science/hal-05512577v1",
  "language": "en",
  "licence": "CC-BY-NC-4.0",
  "licence_label": "CC BY-NC 4.0",
  "licence_source": "article",
  "licence_url": "https://creativecommons.org/licenses/by-nc/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.chim"
    ],
    [
      "hal",
      "1.chim.mate"
    ],
    [
      "openalex",
      "2208|Perovskite Materials and Applications"
    ]
  ],
  "openalex": "W7128165029",
  "pdf_url": "https://hal.science/hal-05512577/document",
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-03",
  "publisher": "Wiley",
  "ris": "https://research.draconitic.com/paper/816qnd4sqrbne.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:27Z",
      "native_id": "hal-05512577",
      "source": "hal",
      "url": "https://hal.science/hal-05512577v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "hal:1.chim.mate",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Constant-Pressure Atmosphere Engineering Induced δ-α Phase Transition in FAPbI3 Single Crystal for X-Ray Detection",
  "title_text": "Constant-Pressure Atmosphere Engineering Induced δ-α Phase Transition in FAPbI3 Single Crystal for X-Ray Detection",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:27Z",
  "url": "https://research.draconitic.com/paper/816qnd4sqrbne",
  "venue": "Advanced Optical Materials",
  "versions": []
}