{"database":"biostudies-literature","file_versions":[],"scores":null,"additional":{"omics_type":["Unknown"],"volume":["8"],"submitter":["Wei Y"],"pubmed_abstract":["Phosphor-converted white-light-emitting diodes (pc-WLED) have been extensively employed as solid-state lighting sources, which have a very important role in people's daily lives. However, due to the scarcity of the red component, it is difficult to realize warm white light efficiently. Hence, red-emitting phosphors are urgently required for improving the illumination quality. In this work, we develop a novel orangish-red La4GeO8:Bi3+ phosphor, the emission peak of which is located at 600 nm under near-ultraviolet (n-UV) light excitation. The full width at half maximum (fwhm) is 103 nm, the internal quantum efficiency (IQE) exceeds 88%, and the external quantum efficiency (EQE) is 69%. According to Rietveld refinement analysis and density functional theory (DFT) calculations, Bi3+ ions randomly occupy all La sites in orthorhombic La4GeO8. Importantly, the oxygen-vacancy-induced electronic localization around the Bi3+ ions is the main reason for the highly efficient orangish-red luminescence. These results provide a new perspective and insight from the local electron structure for designing inorganic phosphor materials that realize the unique luminescence performance of Bi3+ ions."],"journal":["Light, science & applications"],"pagination":["15"],"full_dataset_link":["https://www.ebi.ac.uk/biostudies/studies/S-EPMC6351663"],"repository":["biostudies-literature"],"pubmed_title":["New strategy for designing orangish-red-emitting phosphor via oxygen-vacancy-induced electronic localization."],"pmcid":["PMC6351663"],"pubmed_authors":["Li G","Liang S","Liu K","Xing G","Dang P","Liu M","Jin D","Lin J","Wei Y","Cheng Z"],"additional_accession":[]},"is_claimable":false,"name":"New strategy for designing orangish-red-emitting phosphor via oxygen-vacancy-induced electronic localization.","description":"Phosphor-converted white-light-emitting diodes (pc-WLED) have been extensively employed as solid-state lighting sources, which have a very important role in people's daily lives. However, due to the scarcity of the red component, it is difficult to realize warm white light efficiently. Hence, red-emitting phosphors are urgently required for improving the illumination quality. In this work, we develop a novel orangish-red La4GeO8:Bi3+ phosphor, the emission peak of which is located at 600 nm under near-ultraviolet (n-UV) light excitation. The full width at half maximum (fwhm) is 103 nm, the internal quantum efficiency (IQE) exceeds 88%, and the external quantum efficiency (EQE) is 69%. According to Rietveld refinement analysis and density functional theory (DFT) calculations, Bi3+ ions randomly occupy all La sites in orthorhombic La4GeO8. Importantly, the oxygen-vacancy-induced electronic localization around the Bi3+ ions is the main reason for the highly efficient orangish-red luminescence. These results provide a new perspective and insight from the local electron structure for designing inorganic phosphor materials that realize the unique luminescence performance of Bi3+ ions.","dates":{"release":"2019-01-01T00:00:00Z","publication":"2019","modification":"2025-04-18T15:15:33.507Z","creation":"2019-03-26T22:50:29Z"},"accession":"S-EPMC6351663","cross_references":{"pubmed":["30728955"],"doi":["10.1038/s41377-019-0126-1"]}}