https://scholars.lib.ntu.edu.tw/handle/123456789/407334
DC 欄位 | 值 | 語言 |
---|---|---|
dc.contributor.author | Lu C.-H. | en_US |
dc.contributor.author | Yang C.-Y. | en_US |
dc.contributor.author | Som S. | en_US |
dc.contributor.author | Das S. | en_US |
dc.creator | Das S.;Som S.;Yang C.-Y.;Lu C.-H. | - |
dc.date.accessioned | 2019-05-13T04:33:13Z | - |
dc.date.available | 2019-05-13T04:33:13Z | - |
dc.date.issued | 2018 | - |
dc.identifier.issn | 00027820 | - |
dc.identifier.uri | https://scholars.lib.ntu.edu.tw/handle/123456789/407334 | - |
dc.description.abstract | A modified chemical vapor deposition (CVD) technique is used to synthesize the color-tunable siliconitride Sr2-1.5x-yCexEuySi5N8 (x?=?0.000-0.016 and y?=?0.000-0.020) phosphors. In comparison with the conventional solid-state method, the CVD approach successfully improved the crystallinity, particle size distribution, and photoluminescence through the enhanced gas-solid reaction. Under blue excitation, Sr1.98Eu0.02Si5N8 exhibited a red emission band at 618?nm. The incorporation of Ce3+ ions increased the emission intensity of Eu2+ ions by approximately 10% owing to the enhanced absorption and dipole-dipole energy transfer process from Ce3+ to Eu2+ ions. It resulted in a shift of the emission colors from yellow to red region. The external and internal quantum efficiencies of Sr1.906Ce0.06Eu0.004Si5N8 were calculated as 54% and 70%, respectively. The activation energy of thermal stability for Sr1.906Ce0.06Eu0.004Si5N8 was evaluated as 0.31?eV. A white LED with a color rendering index of 80 and a CCT of 4964?K was successfully fabricated with the present phosphors. The current research demonstrated a new series of Sr2Si5N8:Ce3+, Eu2+ phosphors with color-tunability for fabricating white LEDs with high color-rendering index. ? 2018 The American Ceramic Society | - |
dc.language | en | - |
dc.relation.ispartof | Journal of the American Ceramic Society | en_US |
dc.subject | chemical vapor deposition | - |
dc.subject | spectroscopic characterization | - |
dc.subject | white light-emitting diode | - |
dc.title | Facile synthesis and spectroscopic characterization of siliconitride phosphors for white light-emitting diodes | en_US |
dc.type | journal article | en |
dc.identifier.doi | 10.1111/jace.15914 | - |
dc.identifier.scopus | 2-s2.0-85050655586 | - |
dc.identifier.url | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85050655586&doi=10.1111%2fjace.15914&partnerID=40&md5=284cf148c52e3c858db10ae5b124f81e | - |
dc.relation.pages | 4916-4920 | - |
dc.relation.journalvolume | 101 | - |
dc.relation.journalissue | 11 | - |
item.cerifentitytype | Publications | - |
item.fulltext | no fulltext | - |
item.openairecristype | http://purl.org/coar/resource_type/c_6501 | - |
item.openairetype | journal article | - |
item.grantfulltext | none | - |
crisitem.author.dept | Chemical Engineering | - |
crisitem.author.orcid | 0000-0003-0522-7020 | - |
crisitem.author.parentorg | College of Engineering | - |
顯示於: | 化學工程學系 |
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