1999 Fiscal Year Final Research Report Summary
Ultrafast microspectroscopy of wide band-gap semiconductor nanocrystals.
| Project/Area Number |
10490004
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
広領域
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| Research Institution | Osaka University |
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Principal Investigator |
EDAMATSU Keiichi Graduate School of Engineering Science, Osaka University, Associate Professor, 基礎工学研究科, 助教授 (10193997)
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| Co-Investigator(Kenkyū-buntansha) |
ITOH Tadashi Graduate School of Engineering Science, Osaka University, Professor, 基礎工学研究科, 教授 (60004503)
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| Project Period (FY) |
1998 – 1999
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| Keywords | Nanocrystal / Quantum dot / Semiconductor nanostructure / Microspectroscopy / Ultrafast spectroscopy / Single quantum dot |
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| Research Abstract |
We have investigated various optical properties of semiconductor nanocrystals (quantum dots) including I-VII (CuCl), II-VI (CdSe/ZnCdSe), and III-V (GaAs/AlGaAs) materials. Especially, ultrafast dynamics of an exciton and exciton complexes confined in a single quantum dot have been investigated by means of time-resolved micro-photoluminescence spectroscopy. Topics of this research are listed below.
1. Non-markovian relaxation of excitons confined in CuCl quantum dots.
2. Transient excited-state absorption of CuCl quantum dots.
3. Two-photon excitation spectroscopy of CuCl quantum dots.
4. Micro-photoluminescence spectroscopy of single CuCl quantum dots.
5. Time-resolved micro-photoluminescence spectroscopy of single ZnCdSe quantum dots.
6. Homogeneous linewidth of the resonant luminescence of CuCl quantum dots.
7. Micro-photoluminescence and multiexciton states of a single GaAs quantum dots.
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