{
  "abstract": "The design of Ga2O3 based pn-heterojunctions is recently considering the employment of lithium-based compounds (e.g., Li:NiO/Ga2O3, LiGa5O8/Ga2O3). It is therefore fundamental to understand the potential stability of such interfaces especially considering the possible diffusion and related effects of Li on the Ga2O3 functional properties. In this work the ex-situ diffusion of Li is investigated in three different Ga2O3 epilayers systems [(001) κ-Ga2O3 and (-201) β-Ga2O3 heteroepitaxy on (001) α-Al2O3 and (010) β-Ga2O3 homoepitaxy] at relevant temperatures for the synthesis / processing temperatures of Li-based epilayers. It is here experimentally demonstrated and quantified the Li diffusion in all the investigated Ga2O3 epilayers systems and Li bulk (DLi,bulk) and 2D defects (DLi,2D) diffusion coefficients are provided. In the case of the (010) β-Ga2O3 homoepitaxial layer (nominally free of structural defects), hybrid functional theory calculations foresee a VGa mediated diffusion. Moreover, in the (010) β-Ga2O3 homo-layer a significant effect on its functional properties upon the Li-diffusion process is experimentally highlighted and tentatively related to the passivation of acceptor defects (i.e., formation of VGa-nLi complexes).",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": null,
  "author_total": 29,
  "authors": [
    {
      "name": "A. Sacchi"
    },
    {
      "name": "M. Sidoli"
    },
    {
      "name": "A. Ardenghi"
    },
    {
      "name": "O. Bierwagen"
    },
    {
      "name": "J. Kler"
    },
    {
      "name": "A. Falkenstein"
    },
    {
      "name": "R.A. de Souza"
    },
    {
      "name": "M. Martin"
    },
    {
      "name": "D. Spallek"
    },
    {
      "name": "J. Lähnemann"
    },
    {
      "name": "H. Tornatzky"
    },
    {
      "name": "M.R. Wagner"
    },
    {
      "name": "A. Parisini"
    },
    {
      "name": "M. Pavesi"
    },
    {
      "name": "M. Bosi"
    },
    {
      "name": "L. Seravalli"
    },
    {
      "name": "J.B. Varley"
    },
    {
      "name": "G. Spaggiari"
    },
    {
      "name": "D. Bersani"
    },
    {
      "name": "K. Mizohata"
    },
    {
      "name": "F. Tuomisto"
    },
    {
      "name": "G. Magnani"
    },
    {
      "name": "D. Pontiroli"
    },
    {
      "name": "M. Riccò"
    },
    {
      "name": "F. Mezzadri"
    },
    {
      "name": "S. Pasini"
    },
    {
      "name": "A. Bosio"
    },
    {
      "name": "R. Fornari"
    },
    {
      "name": "P. Mazzolini"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/4vr0jxj43g546.bib",
  "cited_by": 1,
  "doi": "10.1016/j.apsusc.2025.163974",
  "fulltext_url": null,
  "id": "4vr0jxj43g546",
  "issns": [
    "0169-4332",
    "1873-5584"
  ],
  "landing_url": "https://hal.science/hal-05795972v1",
  "language": "en",
  "licence": "CC-BY",
  "licence_label": "CC BY",
  "licence_source": "journal",
  "licence_url": "https://creativecommons.org/licenses/by/4.0/",
  "metadata_licence": null,
  "native_subjects": [
    [
      "hal",
      "0.phys"
    ],
    [
      "openalex",
      "2504|Ga2O3 and related materials"
    ]
  ],
  "openalex": "W4412031336",
  "pdf_url": null,
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-12",
  "publisher": "Elsevier",
  "ris": "https://research.draconitic.com/paper/4vr0jxj43g546.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:17:55Z",
      "native_id": "hal-05795972",
      "source": "hal",
      "url": "https://hal.science/hal-05795972v1"
    }
  ],
  "subjects": [
    {
      "field": "chemistry",
      "origin": "openalex:2504|Ga2O3 and related materials",
      "subfield": "materials-polymers"
    }
  ],
  "title": "Effect of lithium diffusion into Ga2O3 thin films",
  "title_text": "Effect of lithium diffusion into Ga2O3 thin films",
  "type": "peer-reviewed",
  "updated_at": "2026-10-30T12:17:55Z",
  "url": "https://research.draconitic.com/paper/4vr0jxj43g546",
  "venue": "Applied Surface Science",
  "versions": []
}