ELECTRON-PHONON INTERACTIONS AND EXCITONIC DEPHASING IN SEMICONDUCTOR NANOCRYSTALS

被引：162

作者：

TAKAGAHARA, T

机构：

[1] NTT Basic Research Laboratories, Musashino-shi

来源：

PHYSICAL REVIEW LETTERS | 1993年 / 71卷 / 21期

关键词：

D O I：

10.1103/PhysRevLett.71.3577

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The size dependence of the contribution to the excitonic dephasing rate in semiconductor nanocrystals is clarified for various electron-phonon coupling mechanisms. On the basis of these dependencies, 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 pure dephasing due to deformation-potential coupling. The calculated coefficients of the linearly temperature-dependent term are quantitatively in good agreement with the experimental results on CdSe and CuCl nanocrystals.

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页码：3577 / 3580

页数：4

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