{
  "abstract": "The chemical state of transparent oxide electrodes critically determines the formation and durability of selfassembled monolayer (SAM) contacts in perovskite photovoltaics. Although standard cleaning 1 (SC1) and ultraviolet–ozone (UVO) treatments are individually established approaches for oxide-surface modification, their complementary functions in regulating molecular interfaces remain poorly understood. Here, we show that sequential SC1 reconstruction and UVO activation create a distinct interfacial chemical environment: SC1 removes persistent surface contaminants and reorganizes the oxide coordination environment, whereas subsequent UVO activation eliminates treatment-derived residues and generates the highest hydroxyl-related surface fraction with enhanced thermal persistence. The resulting hydroxyl-rich oxide surface promotes SAM adsorption and strengthens oxide–SAM interactions, establishing a more homogeneous buried molecular contact. This reconstructed interface improves the crystallographic and compositional uniformity of the overlying perovskite absorber, reduces energetic disorder and non-radiative recombination, and suppresses opencircuit-voltage losses. Devices incorporating the reconstructed contact exhibit accelerated carrier extraction, prolonged carrier survival, reduced trap-assisted recombination, and enhanced photovoltaic performance and stability. The strategy further translates across flexible wide-bandgap devices, tin-based perovskite solar cells, and four-terminal perovskite/silicon tandems. These results establish the complementary coupling of SC1 reconstruction and UVO activation as a general strategy for engineering robust hydroxyl-mediated molecular contacts on commercial transparent oxide electrodes.",
  "abstract_shown": true,
  "affiliations": [
    "University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo, Japan, 182-8585",
    "Faculty of Informatics and Engineering, University of Electro-Communications, 1-5-1 Chofugaoka, Chofu, Tokyo, Japan, 182-8585"
  ],
  "article_type": null,
  "arxiv": null,
  "author_total": 14,
  "authors": [
    {
      "affs": [
        0
      ],
      "name": "Huān Bì"
    },
    {
      "affs": [
        0
      ],
      "name": "Safalmani Pradhan"
    },
    {
      "affs": [
        0
      ],
      "name": "Ze Liu"
    },
    {
      "affs": [
        1
      ],
      "name": "Yunlong Liu"
    },
    {
      "affs": [
        0
      ],
      "name": "Liang Wang"
    },
    {
      "affs": [
        1
      ],
      "name": "Sujun Ji"
    },
    {
      "affs": [
        1
      ],
      "name": "Yuyao Wei"
    },
    {
      "affs": [
        1
      ],
      "name": "Qiao Li"
    },
    {
      "affs": [
        0
      ],
      "name": "Suraya Shaban"
    },
    {
      "affs": [
        0
      ],
      "name": "Takeshi Kitamura"
    },
    {
      "affs": [
        0
      ],
      "name": "Jiaqi Liu"
    },
    {
      "affs": [
        0,
        1
      ],
      "name": "Qing Shen"
    },
    {
      "affs": [
        0
      ],
      "name": "Shuzi Hayase"
    },
    {
      "name": "Huān Bì",
      "orcid": "0000-0001-7680-9816"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/08zy8644rtvmc.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15008318/v1",
  "fulltext_url": null,
  "id": "08zy8644rtvmc",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008318/v1",
  "language": null,
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "openalex",
      "2208|Perovskite Materials and Applications"
    ]
  ],
  "openalex": "W7208753659",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-04",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/08zy8644rtvmc.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:17Z",
      "native_id": "10.26434/chemrxiv.15008318",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008318/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "source:chemrxiv",
      "subfield": "general"
    }
  ],
  "title": "Engineering transparent-electrode surface chemistry for robust molecular interfaces in perovskite photovoltaics",
  "title_text": "Engineering transparent-electrode surface chemistry for robust molecular interfaces in perovskite photovoltaics",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:17Z",
  "url": "https://research.draconitic.com/paper/08zy8644rtvmc",
  "venue": "ChemRxiv",
  "versions": []
}