抄録
The electron-phonon interactions in semiconductor nanocrystals, especially concerning the acoustic phonon modes are derived and the size dependence of the coupling strength is clarified for typical coupling mechanisms. On the basis of these results, the commonly observed linearly temperature-dependent term of the excitonic dephasing rate and the proportionality of its magnitude to the inverse square of the nanocrystal size are attributed to the pure dephasing due to the deformation-potential coupling. The luminescence Stokes shift and the Huang-Rhys factor due to acoustic phonon modes in Si nanocrystals are discussed in conjunction with the origin of the recently observed luminescence onset energy.
本文言語 | English |
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ページ(範囲) | 129-143 |
ページ数 | 15 |
ジャーナル | Journal of Luminescence |
巻 | 70 |
号 | 1-6 SPEC. ISS. |
出版ステータス | Published - 1996 10月 |
外部発表 | はい |
ASJC Scopus subject areas
- 生物理学
- 生化学
- 化学 (全般)
- 原子分子物理学および光学
- 凝縮系物理学