Reversible and Irreversible Spectral Shifts during Photoluminescence Blinking in a Single CdSe/ZnS Core/Shell Nanocrystal(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
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概要
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We report reversible and irreversible spectral changes during the photoluminescence (PL) blinking of single CdSe/ZnS core/shell semiconductor nanocrystals on glass and gold substrates. Under prolonged intense light illumination, time traces of spectrally resolved PL can be classified into reversible and irreversible periods before the PL is completely quenched. During the irreversible PL blinking period, very large spectral shifts occur during on times and after off times, compared with the reversible PL period. The clear blueshift of the PL peak energy is also observed on glass and gold substrates in air. The PL blinking mechanism and photodegradation of nanocrystals are discussed in light of the spectral shift during PL blinking.
- 社団法人日本物理学会の論文
- 2008-10-15
著者
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Kanemitsu Yoshihiko
Institute Of Physics University Of Tsukuba
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Kanemitsu Yoshihiko
Institute For Chemical Research Kyoto University
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Kanemitsu Yoshihiko
Institute For Chemical Research Kyoto University:photonics And Electronics Science And Engineering C
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ITO Yuichi
Institute for Chemical Research, Kyoto University
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MATSUDA Kazunari
Institute for Chemical Research, Kyoto University
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Matsuda Kazunari
Institute For Chemical Research Kyoto University
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Ito Yuichi
Institute For Chemical Research Kyoto University
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