{
  "abstract": "Despite the limitations associated with the delta-phase perovskite (δ-PVK), its potential to enhance device performance and stability has recently attracted increasing interest. In this work, we investigate the influence of these properties on the performance of ZnO-based ultraviolet (UV) photoconductors by surface-modifying the ZnO active layer with a δ-PVK layer derived from the phase transition of alpha-phase triple-cation mixed-halide perovskite, (Cs0.05FA0.81MA0.14)Pb(I0.85Br0.15)₃ (α-PVK), via solution processing. The resulting ZnO/δ-PVK UV photoconductor exhibits enhanced performance, which is attributed to effective interfacial charge transfer from δ-PVK to ZnO, accompanied by an enhanced photogating effect. Compared with the ZnO device, the ZnO/δ-PVK device exhibits a photocurrent (I photo) ca. 3 times higher, while being ca. 2 orders of magnitude higher than that of the ZnO/α-PVK device. Accordingly, the ZnO/δ-PVK device achieves the highest I on/I off ratio (344.81), photoresponsivity (R = 2.0 A W⁻¹), photodetectivity (D* = 3.06 × 10¹¹ Jones) and external quantum efficiency (EQE = 680%) under 365 nm UV irradiation at a power density (P) of 23 mW cm⁻² and a bias voltage of 1 V. These findings highlight the potential of the previously underexplored δ-PVK phase for enhancing the performance of optoelectronic devices.",
  "abstract_shown": true,
  "affiliations": [
    "School of Engineering and Materials Science, Queen Mary University of London Mile End Road London E1 4NS UK o.igbari@qmul.ac.uk zhe.li@qmul.ac.uk."
  ],
  "article_type": "research article",
  "arxiv": null,
  "author_total": 3,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Femi Igbari",
      "orcid": "0000-0002-1885-2493"
    },
    {
      "affs": [
        0
      ],
      "name": "Muhammad Bilal",
      "orcid": "0000-0002-9700-095X"
    },
    {
      "affs": [
        0
      ],
      "name": "Zhe Li",
      "orcid": "0000-0002-7404-7448"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/d7ah3jbe50ydr.bib",
  "cited_by": 0,
  "doi": "10.1039/d6ra08487g",
  "fulltext_url": "https://europepmc.org/articles/PMC13678671",
  "id": "d7ah3jbe50ydr",
  "issns": [
    "2046-2069"
  ],
  "landing_url": "https://europepmc.org/article/MED/42899092",
  "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",
      "Chemistry"
    ],
    [
      "openalex",
      "2505|ZnO doping and properties"
    ]
  ],
  "openalex": "W7222971597",
  "pdf_url": "https://europepmc.org/articles/PMC13678671?pdf=render",
  "pmcid": "PMC13678671",
  "pmid": "42899092",
  "published": "2026-10-19",
  "publisher": "Royal Society of Chemistry",
  "ris": "https://research.draconitic.com/paper/d7ah3jbe50ydr.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:19:32Z",
      "native_id": "MED:42899092",
      "source": "europepmc",
      "url": "https://europepmc.org/article/MED/42899092"
    },
    {
      "first_seen": "2026-11-07T12:23:33Z",
      "native_id": "PMC13678671",
      "source": "pmc",
      "url": "https://doi.org/10.1039/d6ra08487g"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2505|ZnO doping and properties",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Impact of the phase transition of halide perovskite on the performance of ZnO ultraviolet photoconductor.",
  "title_text": "Impact of the phase transition of halide perovskite on the performance of ZnO ultraviolet photoconductor.",
  "type": "peer-reviewed",
  "updated_at": "2026-11-08T12:21:02Z",
  "url": "https://research.draconitic.com/paper/d7ah3jbe50ydr",
  "venue": "RSC advances",
  "versions": []
}