{
  "abstract": "The intrinsic photochemical and thermodynamic stability of lead halide perovskite, as influenced by the A-site cations, is evaluated: for Methylammonium (MA), Formamidinium (FA), and Cesium (Cs). To bridge the gap to 25-year commercial viability, MA should be excluded from commercial perovskite designs. A research and development focus on FA/Cs mixed-cation materials, or on fully inorganic Cs based materials is better (the latter being the most photostable option). However, also FA based materials show signs of intrinsic photochemical instability. Fully inorganic triple halide perovskites represent the best materials for tandems on silicon, regarding photo-stability, but, I 2 formation can still occur due to the intrinsic nature of charge transport and has to be suppressed. Exclusion of oxygen and humidity is a first prerequisite for longevity. Failures in the field of silicon solar panels are generally not related to the Si semi-conductor, implying that only an intrinsically photostable semi-conductors can result in acceptable solar panel breakdown statistics.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 4,
  "authors": [
    {
      "name": "Emily de Bock"
    },
    {
      "name": "Claudia Pierdomenico"
    },
    {
      "name": "Alice E. M. Riot Rocquefelte"
    },
    {
      "name": "René M. Williams",
      "orcid": "0000-0002-9490-6182"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/06qzyn232n7ga.bib",
  "cited_by": 0,
  "doi": "10.26434/chemrxiv.15008419/v1",
  "fulltext_url": null,
  "id": "06qzyn232n7ga",
  "issns": [],
  "landing_url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008419/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": "W7211878829",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-09-07",
  "publisher": "American Chemical Society (ACS)",
  "ris": "https://research.draconitic.com/paper/06qzyn232n7ga.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:17Z",
      "native_id": "10.26434/chemrxiv.15008419",
      "source": "chemrxiv",
      "url": "https://chemrxiv.org/doi/full/10.26434/chemrxiv.15008419/v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "source:chemrxiv",
      "subfield": "general"
    }
  ],
  "title": "The Intrinsic Photochemical (in)-Stability of Lead Halide Perovskites",
  "title_text": "The Intrinsic Photochemical (in)-Stability of Lead Halide Perovskites",
  "type": "preprint",
  "updated_at": "2026-10-30T12:17:17Z",
  "url": "https://research.draconitic.com/paper/06qzyn232n7ga",
  "venue": "ChemRxiv",
  "versions": []
}