Crystal Size Dependence of Fluorescence Spectra from Perylene Nanocrystals Evaluated by Scanning Near-Field Optical Microspectroscopy
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概要
- 論文の詳細を見る
The fluorescence spectra of perylene nanocrystals, the crystal size of which is in the range of about 300 nm to 1 μm, were measured with the scanning near-field optical microspectroscopy. It has become apparent for the first time that the emission peaks from the self-trapped exciton state were evidently blue-shifted with decreasing crystal size. On the other hand, the emission spectra from the free exciton state were scarcely dependent on crystal size. These spectral changes were discussed semi-quantitatively on the basis of the strong coupling model between excitons and lattice for a molecular crystal. The influence of the substrate was also suggested.
- INSTITUTE OF PURE AND APPLIED PHYSICSの論文
- 2003-02-01
著者
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Nakanishi Hachiro
Institute For Chemical Reaction Science Tohoku University
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Mitsui Tadashi
Nanomaterials Laboratory National Institute For Materials Science
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Sekiguchi Takashi
Nanomaterials Laboratory National Institute For Materials Science
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Kasai Hitoshi
Institute For Multidisciplinary Research For Advanced Materials Tohoku University
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Oikawa Hidetoshi
Nanomaterials Laboratory National Institute For Materials Science
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Onodera Tsunenobu
Institute of Multidisciplinary Research for Advanced Materials (IMRAM), Tohoku University, Aoba-ku, Sendai 980-8577, Japan
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Oikawa Hidetoshi
Nanomaterials Laboratory, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Japan
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Sekiguchi Takashi
Nanomaterials Laboratory, National Institute for Materials Science, 1-2-1 Sengen, Tsukuba 305-0047, Japan
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