2010 Fiscal Year Final Research Report
Control of photoluminescence properties in semiconductor quantum dots by using the interaction with polymers
| Project/Area Number |
20540316
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Condensed matter physics I
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| Research Institution | Kagawa University |
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Principal Investigator |
NAKANISHI Shunsuke Kagawa University, 工学部, 教授 (30155767)
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| Project Period (FY) |
2008 – 2010
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| Keywords | 量子ドット / CdSe / ZnS / 高分子 / TiO_2ナノ粒子 / 金属ナノ粒子 / Blinking / 位相緩和 / 四光波混合 |
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| Research Abstract |
We have examined that photoluminescence (PL) properties of core/shell-type semiconductor quantum dots (QDs) CdSe/ZnS are improved by the interaction with the polymers in solution. Next, we have studied the PL properties (spectra, lifetime, blinking) in both macroscopic and single QD level by the interaction with metal and TiO_2 nanoparticles and found out the blinking property of single QDs can be improved by the interaction with TiO_2. Further, we have observed a novel effect of solvent molecules on femtosecond optical phase relaxation of QDs in solutions.
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[Presentation] Population Dynamics of Excitons in GaAs/AlAs Coupled Quantum Well Systems Detected by Pump-Probe Spectroscopy2009
Author(s)
S.Nakanishi, Y.Uchida, H.Tsuji, N.Fujita, K.Fujii, H.Miyagawa, N.Tsurumachi, S.Koshiba, H.Itoh, T.G.Kim
Organizer
International Conference on Nonlinear Optics
Place of Presentation
Honolulu, Hawaii
Year and Date
2009-07-12
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