Effects of Interactions with Cyclic Solvent Molecules on Optical Dephasing of CdSe/ZnS Colloidal Quantum Dots Detected by Femtosecond Four-Wave Mixing Spectroscopy

• Yusuke Hirosawa

• Hiroyoshi Kouzai

• Naoya Yamazaki

• Hayato Miyagawa

• Noriaki Tsurumachi

• Shun Koshiba

• Shunsuke Nakanishi

• VasudevanPillai Biju

• Mituru Ishikawa

Abstract

We have studied the effects of interactions with cyclic solvent molecules on the optical dephasing of CdSe/ZnS colloidal quantum dots (QDs) by femtosecond four-wave mixing spectroscopy. We have found that the interactions with the cyclic solvents without π-bonds result in unexpectedly long dephasing times of QDs even at room temperature, while the interactions with the cyclic solvents including π-bonds make the optical dephasing of QDs extremely fast with a dephasing time of less than our time resolution.

Journal

• Japanese Journal of Applied Physics

  Japanese Journal of Applied Physics 52 (7R), 070202-, 2013-06-07

  IOP Publishing

Keywords

• General Physics and Astronomy
• General Engineering

Details

• CRID: 1360847874817318912
• NII Article ID: 210000142423
• DOI: 10.7567/jjap.52.070202
• ISSN: 13474065
• ISSN: 00214922
• ISSN: http://id.crossref.org/issn/13474065
• Web Site: https://iopscience.iop.org/article/10.7567/JJAP.52.070202
• Web Site: https://iopscience.iop.org/article/10.7567/JJAP.52.070202/pdf
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  • KAKEN