DC Field | Value | Language |
---|---|---|
dc.contributor.author | Bang, J | - |
dc.contributor.author | Chon, B | - |
dc.contributor.author | Won, N | - |
dc.contributor.author | Nam, J | - |
dc.contributor.author | Joo, T | - |
dc.contributor.author | Kim, S | - |
dc.date.accessioned | 2016-04-01T08:25:32Z | - |
dc.date.available | 2016-04-01T08:25:32Z | - |
dc.date.created | 2009-05-22 | - |
dc.date.issued | 2009-04-23 | - |
dc.identifier.issn | 1932-7447 | - |
dc.identifier.other | 2009-OAK-0000019100 | - |
dc.identifier.uri | https://oasis.postech.ac.kr/handle/2014.oak/27942 | - |
dc.description.abstract | We report photoluminescence (PL) spectral switching of quantum dots (QDs) by chemically controlling transfers of electrons in and out of the type-II heterostructures. When electron charged, CdTe/CdSe (core/shell) QDs show huge PL blue shifts (up to similar to 100 nm) whereas PL of CdSe/CdTe (core/shell) QDs red-shifts. We demonstrate reversible spectral switching of type-II QDs by repeated charging and neutralization processes. The PL spectral shifts are due to the interactions between injected spectrator electrons and type-II character excitons. Electron charged CdTe/CdSe QDs show PL blue shifts because of the strong repulsions between the shell-localized excitonic electrons and injected spectrator electrons. It is opposite for CdSe/CdTe QDs, where injected electrons in surface states attract the holes in the shells. We investigate the interactions of spectrator electrons and excitons as varying the dimensions of type-II QDs. We also compare the type-II QDs with type-I QDs such as CdSe, CdTe, and CdTeSe alloyed QDs. We showcase unique optical properties of charged type-II QDs, which have many potential applications such as electro-optic modulators. | - |
dc.description.statementofresponsibility | X | - |
dc.language | English | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.relation.isPartOf | JOURNAL OF PHYSICAL CHEMISTRY C | - |
dc.title | SPECTRAL SWITCHING OF TYPE-II QUANTUM DOTS BY CHARGING | - |
dc.type | Article | - |
dc.contributor.college | 화학과 | - |
dc.identifier.doi | 10.1021/JP900530A | - |
dc.author.google | Bang, J | - |
dc.author.google | Chon, B | - |
dc.author.google | Won, N | - |
dc.author.google | Nam, J | - |
dc.author.google | Joo, T | - |
dc.author.google | Kim, S | - |
dc.relation.volume | 113 | - |
dc.relation.issue | 16 | - |
dc.relation.startpage | 6320 | - |
dc.relation.lastpage | 6323 | - |
dc.contributor.id | 10092693 | - |
dc.relation.journal | JOURNAL OF PHYSICAL CHEMISTRY C | - |
dc.relation.index | SCI급, SCOPUS 등재논문 | - |
dc.relation.sci | SCI | - |
dc.collections.name | Journal Papers | - |
dc.type.rims | ART | - |
dc.identifier.bibliographicCitation | JOURNAL OF PHYSICAL CHEMISTRY C, v.113, no.16, pp.6320 - 6323 | - |
dc.identifier.wosid | 000265383300002 | - |
dc.date.tcdate | 2019-02-01 | - |
dc.citation.endPage | 6323 | - |
dc.citation.number | 16 | - |
dc.citation.startPage | 6320 | - |
dc.citation.title | JOURNAL OF PHYSICAL CHEMISTRY C | - |
dc.citation.volume | 113 | - |
dc.contributor.affiliatedAuthor | Joo, T | - |
dc.identifier.scopusid | 2-s2.0-67049137287 | - |
dc.description.journalClass | 1 | - |
dc.description.journalClass | 1 | - |
dc.description.wostc | 27 | - |
dc.description.scptc | 25 | * |
dc.date.scptcdate | 2018-05-121 | * |
dc.type.docType | Letter | - |
dc.subject.keywordPlus | LIGHT AMPLIFICATION | - |
dc.subject.keywordPlus | OPTICAL-PROPERTIES | - |
dc.subject.keywordPlus | CDSE NANOCRYSTALS | - |
dc.subject.keywordPlus | PHOTOLUMINESCENCE | - |
dc.subject.keywordPlus | GROWTH | - |
dc.subject.keywordPlus | EMISSION | - |
dc.subject.keywordPlus | ELECTRON | - |
dc.subject.keywordPlus | HOLE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
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