Efficient White-Light-Emitting Diodes Fabricated from Highly Fluorescent Copper Indium Sulfide Core/Shell Quantum Dots
DC Field | Value | Language |
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dc.contributor.author | Song, Woo-Seuk | - |
dc.contributor.author | Yang, Heesun | - |
dc.date.accessioned | 2021-12-02T04:43:09Z | - |
dc.date.available | 2021-12-02T04:43:09Z | - |
dc.date.created | 2021-11-29 | - |
dc.date.issued | 2012-05-22 | - |
dc.identifier.issn | 0897-4756 | - |
dc.identifier.uri | https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/18956 | - |
dc.description.abstract | Copper indium sulfide (CIS) quantum dots (QDs) with different Cu/In molar ratios of 1/1, 1/2, and 1/4 are synthesized via a hot colloidal route. The band gap energy of CIS QDs is observed to be dependent on Cu/In ratio, exhibiting a higher band gap from more Cu-deficient QDs. The emission wavelengths of all CIS QDs belong to a deep red region (665-717 nm) with relatively low quantum yields (Qys) of 8.6-12.7%. Compared to respective original core QDs, the absorption peaks of all CIS/ZnS QDs are blue-shifted, and their emission wavelengths move to a higher energy accordingly, showing a quite tunable emission from yellow to red. The effective surface passivation by a ZnS overlayer results in a dramatic increase in QY of CIS/ZnS QDs in the range of 68-78%. All CIS/ZnS QDs are tested as wavelength converters for the fabrication of QD-based light-emitting diodes (LEDs). QD-based white LEDs that consist of only a single type of QD are for the first time realized by applying yellow-emitting CIS/ZnS QDs as a result of the appropriate color mixing between blue emission from a LED chip and yellow emission from QDs. Detailed electroluminescent properties including color rendering index, Commission Internationale de l'Eclairage (CIE) color. coordinates, and luminous efficiency of QD-based white LEDs are evaluated as a function of forward current. | - |
dc.language | 영어 | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | CUINS2 NANOCRYSTALS | - |
dc.subject | NANOPARTICLES | - |
dc.subject | NONINJECTION | - |
dc.subject | CONVERTER | - |
dc.subject | DROOP | - |
dc.title | Efficient White-Light-Emitting Diodes Fabricated from Highly Fluorescent Copper Indium Sulfide Core/Shell Quantum Dots | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Yang, Heesun | - |
dc.identifier.doi | 10.1021/cm300837z | - |
dc.identifier.scopusid | 2-s2.0-84861370897 | - |
dc.identifier.wosid | 000304237500032 | - |
dc.identifier.bibliographicCitation | CHEMISTRY OF MATERIALS, v.24, no.10, pp.1961 - 1967 | - |
dc.relation.isPartOf | CHEMISTRY OF MATERIALS | - |
dc.citation.title | CHEMISTRY OF MATERIALS | - |
dc.citation.volume | 24 | - |
dc.citation.number | 10 | - |
dc.citation.startPage | 1961 | - |
dc.citation.endPage | 1967 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | CUINS2 NANOCRYSTALS | - |
dc.subject.keywordPlus | NANOPARTICLES | - |
dc.subject.keywordPlus | NONINJECTION | - |
dc.subject.keywordPlus | CONVERTER | - |
dc.subject.keywordPlus | DROOP | - |
dc.subject.keywordAuthor | copper indium sulfide | - |
dc.subject.keywordAuthor | quantum dots | - |
dc.subject.keywordAuthor | Cu/In molar ratio | - |
dc.subject.keywordAuthor | white LED | - |
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