期刊
NANO LETTERS
卷 13, 期 4, 页码 1662-1669出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl400117h
关键词
Nanocrystal; quantum dot; biexciton; plasmon; photon correlation; antibunching
类别
资金
- NSF Graduate Research Fellowship Program
- Lucille P. and Edward C. Giles Dissertation Year Fellowship
- Graduate School at UNC Charlotte
- NSF Nano Sure REU program
- Department of Defense
- University of North Carolina at Chapel Hill via the project entitled Collaborative Initiative in Biomedical Imaging to Study Complex Diseases
- Nanoscale Science PhD program in the Department of Chemistry at UNC Charlotte
- Direct For Mathematical & Physical Scien
- Division Of Chemistry [1156867] Funding Source: National Science Foundation
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [0851797] Funding Source: National Science Foundation
Single molecule time-resolved fluorescence spectroscopy of CdSe/ZnS core-shell quantum dots (QDs) localized near a rough gold thin film demonstrates significant enhancement of multiphoton emission while at the same time showing a decrease in single photon emission. A rigorous analysis of time-resolved photon correlation spectroscopy and fluorescence lifetime data on single quantum dots at room temperature reveals an increase in radiative recombination rate of multiexcitons that is much higher than expected and, perhaps more significantly, is not correlated with concomitant increases in single exciton recombination rates. We believe that these results confirm a stronger coupling of multiexcitons to plasmon modes via a coupling to plasmon multipole modes.
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