Optically functional hybrid quantum dots
| Project/Area Number |
23656002
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Applied materials science/Crystal engineering
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| Research Institution | Hokkaido University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2013
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2012: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2011: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Keywords | 半導体 / 量子ドット / 表面プラズモン |
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| Research Abstract |
Plasmonic effects induced by Au nano-particles in semiconductor quantum dots (QDs) were studied, aiming at efficient coupling between carriers in the QDs and lights. Various optically functional hybrid QDs with Au nano-particles were artificially fabricated, where the distance between the QD and the Au nano-particle was intentionally controlled by using modified molecular chains or nano-lithography techniques based on the protein engineering. In Si QDs, enhancements of the photoluminescence (PL) intensity originating from the localized plasmonic effect were observed. However, in II-VI or III-V QDs with high internal quantum efficiencies, PL intensities significantly decrease because of the energy transfer from the excited states in the QDs into the Au nano-particles, rather than the plasmonic enhancement effect.
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Report
(4 results)
Research Products
(16 results)
