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DC Field | Value | Language |
---|---|---|
dc.citation.endPage | 9064 | - |
dc.citation.number | 5 | - |
dc.citation.startPage | 9057 | - |
dc.citation.title | ACS NANO | - |
dc.citation.volume | 15 | - |
dc.contributor.author | Lee, Hyeongwoo | - |
dc.contributor.author | Woo, Ju Young | - |
dc.contributor.author | Park, Dae Young | - |
dc.contributor.author | Jo, Inho | - |
dc.contributor.author | Park, Jusun | - |
dc.contributor.author | Lee, Yeunhee | - |
dc.contributor.author | Koo, Yeonjeong | - |
dc.contributor.author | Choi, Jinseong | - |
dc.contributor.author | Kim, Hyojung | - |
dc.contributor.author | Kim, Yong-Hyun | - |
dc.contributor.author | Jeong, Mun Seok | - |
dc.contributor.author | Jeong, Sohee | - |
dc.contributor.author | Park, Kyoung-Duck | - |
dc.date.accessioned | 2023-12-21T15:48:20Z | - |
dc.date.available | 2023-12-21T15:48:20Z | - |
dc.date.created | 2021-06-26 | - |
dc.date.issued | 2021-05 | - |
dc.description.abstract | Strain engineering of perovskite quantum dots (pQDs) enables widely tunable photonic device applications. However, manipulation at the single-emitter level has never been attempted. Here, we present a tip-induced control approach combined with tip-enhanced photoluminescence (TEPL) spectroscopy to engineer strain, bandgap, and the emission quantum yield of a single pQD. Single CsPbBrxI3-x pQDs are clearly resolved through hyperspectral TEPL imaging with , similar to 10 nm spatial resolution. The plasmonic tip then directly applies pressure to a single pQD to facilitate a bandgap shift up to similar to 62 meV with Purcell-enhanced PL increase as high as similar to 10(5) for the strain-induced pQD. Furthermore, by systematically modulating the tip-induced compressive strain of a single pQD, we achieve dynamical bandgap engineering in a reversible manner. In addition, we facilitate the quantum dot coupling for a pQD ensemble with similar to 0.8 GPa tip pressure at the nanoscale estimated theoretically. Our approach presents a strategy to tune the nano-opto-electro-mechanical properties of pQDs at the single-crystal level. | - |
dc.identifier.bibliographicCitation | ACS NANO, v.15, no.5, pp.9057 - 9064 | - |
dc.identifier.doi | 10.1021/acsnano.1c02182 | - |
dc.identifier.issn | 1936-0851 | - |
dc.identifier.scopusid | 2-s2.0-85106356160 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/54090 | - |
dc.identifier.url | https://pubs.acs.org/doi/10.1021/acsnano.1c02182 | - |
dc.identifier.wosid | 000656994100101 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Tip-Induced Strain Engineering of a Single Metal Halide Perovskite Quantum Dot | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary | - |
dc.relation.journalResearchArea | Chemistry; Science & Technology - Other Topics; Materials Science | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | tip-enhanced photoluminescence | - |
dc.subject.keywordAuthor | perovskite | - |
dc.subject.keywordAuthor | single quantum dot | - |
dc.subject.keywordAuthor | strain engineering | - |
dc.subject.keywordAuthor | quantum dot coupling | - |
dc.subject.keywordPlus | EMISSION | - |
dc.subject.keywordPlus | NANOCRYSTALS | - |
dc.subject.keywordPlus | TRANSITION | - |
dc.subject.keywordPlus | PHOTOLUMINESCENCE | - |
dc.subject.keywordPlus | STABILIZATION | - |
dc.subject.keywordPlus | CSPBX3 | - |
dc.subject.keywordPlus | BR | - |
dc.subject.keywordPlus | CL | - |
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