Full metadata record
DC Field | Value | Language |
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dc.citation.endPage | 2704 | - |
dc.citation.number | 9 | - |
dc.citation.startPage | 2699 | - |
dc.citation.title | ACS PHOTONICS | - |
dc.citation.volume | 8 | - |
dc.contributor.author | Ying, Guanhua | - |
dc.contributor.author | Farrow, Tristan | - |
dc.contributor.author | Jana, Atanu | - |
dc.contributor.author | Shao, Hanbo | - |
dc.contributor.author | Im, Hyunsik | - |
dc.contributor.author | Osokin, Vitaly | - |
dc.contributor.author | Baek, Seung Bin | - |
dc.contributor.author | Alanazi, Mutibah | - |
dc.contributor.author | Karmakar, Sanjit | - |
dc.contributor.author | Mukherjee, Manas | - |
dc.contributor.author | Park, Youngsin | - |
dc.contributor.author | Taylor, Robert A. | - |
dc.date.accessioned | 2023-12-21T15:15:43Z | - |
dc.date.available | 2023-12-21T15:15:43Z | - |
dc.date.created | 2021-10-07 | - |
dc.date.issued | 2021-09 | - |
dc.description.abstract | The surprising recent observation of highly emissive triplet-states in lead halide perovskites accounts for their orders-of-magnitude brighter optical signals and high quantum efficiencies compared to other semiconductors. This makes them attractive for future optoelectronic applications, especially in bright low-threshold nanolasers. While nonresonantly pumped lasing from all-inorganic lead-halide perovskites is now well-established as an attractive pathway to scalable low-power laser sources for nano-optoelectronics, here we showcase a resonant optical pumping scheme on a fast triplet-state in CsPbBr3 nanocrystals. The scheme allows us to realize a polarized triplet-laser source that dramatically enhances the coherent signal by 1 order of magnitude while suppressing noncoherent contributions. The result is a source with highly attractive technological characteristics, including a bright and polarized signal and a high stimulated-to-spontaneous emission signal contrast that can be filtered to enhance spectral purity. The emission is generated by pumping selectively on a weakly confined excitonic state with a Bohr radius similar to 10 nm in the nanocrystals. The exciton fine-structure is revealed by the energy-splitting resulting from confinement in nanocrystals with tetragonal symmetry. We use a linear polarizer to resolve 2-fold nondegenerate sublevels in the triplet exciton and use photoluminescence excitation spectroscopy to determine the energy of the state before pumping it resonantly. | - |
dc.identifier.bibliographicCitation | ACS PHOTONICS, v.8, no.9, pp.2699 - 2704 | - |
dc.identifier.doi | 10.1021/acsphotonics.1c00720 | - |
dc.identifier.issn | 2330-4022 | - |
dc.identifier.scopusid | 2-s2.0-85114701470 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/54128 | - |
dc.identifier.url | https://pubs.acs.org/doi/10.1021/acsphotonics.1c00720 | - |
dc.identifier.wosid | 000697319600018 | - |
dc.language | 영어 | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.title | Resonantly Pumped Bright-Triplet Exciton Lasing in Cesium Lead Bromide Perovskites | - |
dc.type | Article | - |
dc.description.isOpenAccess | TRUE | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Optics; Physics, Applied; Physics, Condensed Matter | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics; Materials Science; Optics; Physics | - |
dc.type.docType | Article | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | perovskites | - |
dc.subject.keywordAuthor | nanocrystals | - |
dc.subject.keywordAuthor | lasing triplet exciton | - |
dc.subject.keywordAuthor | photoluminescence | - |
dc.subject.keywordPlus | NANOCRYSTALS | - |
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