{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,1]],"date-time":"2026-09-01T11:34:53Z","timestamp":1788262493269,"version":"build-2803163510"},"reference-count":47,"publisher":"AIP Publishing","issue":"16","license":[{"start":{"date-parts":[[2023,10,23]],"date-time":"2023-10-23T00:00:00Z","timestamp":1698019200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"},{"start":{"date-parts":[[2023,10,23]],"date-time":"2023-10-23T00:00:00Z","timestamp":1698019200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100004063","name":"Knut Och Alice Wallenbergs Stiftelse","doi-asserted-by":"publisher","award":["KAW-2016.0081"],"award-info":[{"award-number":["KAW-2016.0081"]}],"id":[{"id":"10.13039\/501100004063","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2023,10,28]]},"abstract":"<jats:p>The transition of energy from the 4f to the 5d state is a fundamental element driving various applications, such as phosphors and optoelectronic devices. The positioning of the 4f ground states and the 5d excited states significantly influences this energy shift. In our research, we delve into the placement of these states utilizing a hybrid density functional theory (DFT) combined with spin\u2013orbit coupling (SOC) via the supercell method. Additionally, we scrutinize the transition energy, applying the constrained density functional theory (cDFT) approach in conjunction with the \u0394SCF method. Our study illustrates that the synergy of cDFT and SOC generates a discrepancy of about 2% for Ce1 and 4% for Ce2 when comparing the calculated results to experimental data. Moreover, We have determined the positions of the 4f ground states to be 2.73\u00a0eV above the Valence Band Maximum (VBM) for Ce1 and 2.70\u00a0eV for Ce2. We also note a tight correlation between the 5d levels identified in the experimental data and the theoretical outcomes derived from wave function calculations at the CASPT2 accuracy level.<\/jats:p>","DOI":"10.1063\/5.0165432","type":"journal-article","created":{"date-parts":[[2023,10,23]],"date-time":"2023-10-23T10:04:42Z","timestamp":1698055482000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":4,"title":["First-principles study of luminescence and electronic properties of Ce-doped Y2SiO5"],"prefix":"10.1063","volume":"159","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-2771-4823","authenticated-orcid":false,"given":"Amin","family":"Mirzai","sequence":"first","affiliation":[{"name":"Department of Mechanical Engineering Sciences, Division of Mechanics, Materials, and Component Design, Lund University , P.O. 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