Full metadata record
DC Field | Value | Language |
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dc.contributor.author | KIM HONG HEE | - |
dc.contributor.author | Lee, Heebin | - |
dc.contributor.author | Jeung Ku Kang | - |
dc.contributor.author | CHOI, WON KOOK | - |
dc.date.accessioned | 2024-01-12T03:31:20Z | - |
dc.date.available | 2024-01-12T03:31:20Z | - |
dc.date.created | 2022-03-02 | - |
dc.date.issued | 2022-05 | - |
dc.identifier.issn | 0003-3804 | - |
dc.identifier.uri | https://pubs.kist.re.kr/handle/201004/76739 | - |
dc.description.abstract | Both 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.language | English | - |
dc.publisher | A H?thig | - |
dc.title | Photoluminescence and Electron Paramagnetic Resonance Spectroscopy for Revealing Visible Emission of ZnO Quantum Dots | - |
dc.type | Article | - |
dc.identifier.doi | 10.1002/andp.202100382 | - |
dc.description.journalClass | 1 | - |
dc.identifier.bibliographicCitation | Annalen der Physik (Leipzig), v.534, no.5, pp.2100382 - 2100393 | - |
dc.citation.title | Annalen der Physik (Leipzig) | - |
dc.citation.volume | 534 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | 2100382 | - |
dc.citation.endPage | 2100393 | - |
dc.description.isOpenAccess | Y | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.identifier.wosid | 000762811800001 | - |
dc.identifier.scopusid | 2-s2.0-85125462559 | - |
dc.relation.journalWebOfScienceCategory | Physics, Multidisciplinary | - |
dc.relation.journalResearchArea | Physics | - |
dc.type.docType | Article | - |
dc.subject.keywordPlus | ZINC-OXIDE | - |
dc.subject.keywordPlus | MAGNETIC-RESONANCE | - |
dc.subject.keywordPlus | POINT-DEFECTS | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | CONFINEMENT | - |
dc.subject.keywordPlus | EXCITON | - |
dc.subject.keywordPlus | OXYGEN | - |
dc.subject.keywordPlus | SIZE | - |
dc.subject.keywordPlus | BAND | - |
dc.subject.keywordPlus | ESR | - |
dc.subject.keywordAuthor | ZnO quantum dots | - |
dc.subject.keywordAuthor | zinc vacancy-hydrogen complexes | - |
dc.subject.keywordAuthor | electron paramagnetic resonance | - |
dc.subject.keywordAuthor | oxygen vacancies | - |
dc.subject.keywordAuthor | photoluminescence | - |
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