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dc.contributor.authorKIM HONG HEE-
dc.contributor.authorLee, Heebin-
dc.contributor.authorJeung Ku Kang-
dc.contributor.authorCHOI, WON KOOK-
dc.date.accessioned2024-01-12T03:31:20Z-
dc.date.available2024-01-12T03:31:20Z-
dc.date.created2022-03-02-
dc.date.issued2022-05-
dc.identifier.issn0003-3804-
dc.identifier.urihttps://pubs.kist.re.kr/handle/201004/76739-
dc.description.abstractBoth PL and EPR are simultaneously adopted to systematically elucidate the defect centers of green luminescence (GL) as well as the EPR peak g = 1.96 of ZnO and the relationship between them. The PL of ZnO QDs reveals that GL of 2.21-2.31 eV disappears at excitation wavelengths > 400 nm. This is related to the electronic transition from conduction band (CB), or shallow donor defect centers, to deep defects of V-Zn-H complexes at approximate to 0.9 eV above the valence band (VB). The EPR peak g = 1.96 emerged only when irradiated with light shorter than 400 nm, which is explicitly correlated with the electrons trapped in the CB or the shallow donors participating in the GL. A spin-spin relaxation time (T-2) estimated from the peak-to-peak line width Delta H-pp in the EPR signal is approximate to 17.5-52.5 ns, which is two orders of magnitude longer than known values for bulk or thin-film ZnO.-
dc.languageEnglish-
dc.publisherA H?thig-
dc.titlePhotoluminescence and Electron Paramagnetic Resonance Spectroscopy for Revealing Visible Emission of ZnO Quantum Dots-
dc.typeArticle-
dc.identifier.doi10.1002/andp.202100382-
dc.description.journalClass1-
dc.identifier.bibliographicCitationAnnalen der Physik (Leipzig), v.534, no.5, pp.2100382 - 2100393-
dc.citation.titleAnnalen der Physik (Leipzig)-
dc.citation.volume534-
dc.citation.number5-
dc.citation.startPage2100382-
dc.citation.endPage2100393-
dc.description.isOpenAccessY-
dc.description.journalRegisteredClassscie-
dc.description.journalRegisteredClassscopus-
dc.identifier.wosid000762811800001-
dc.identifier.scopusid2-s2.0-85125462559-
dc.relation.journalWebOfScienceCategoryPhysics, Multidisciplinary-
dc.relation.journalResearchAreaPhysics-
dc.type.docTypeArticle-
dc.subject.keywordPlusZINC-OXIDE-
dc.subject.keywordPlusMAGNETIC-RESONANCE-
dc.subject.keywordPlusPOINT-DEFECTS-
dc.subject.keywordPlusNANOPARTICLES-
dc.subject.keywordPlusCONFINEMENT-
dc.subject.keywordPlusEXCITON-
dc.subject.keywordPlusOXYGEN-
dc.subject.keywordPlusSIZE-
dc.subject.keywordPlusBAND-
dc.subject.keywordPlusESR-
dc.subject.keywordAuthorZnO quantum dots-
dc.subject.keywordAuthorzinc vacancy-hydrogen complexes-
dc.subject.keywordAuthorelectron paramagnetic resonance-
dc.subject.keywordAuthoroxygen vacancies-
dc.subject.keywordAuthorphotoluminescence-
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