Electron-phonon interactions and excitonic dephasing in semiconductor nanocrystals

T. Takagahara

Research output: Contribution to journalArticlepeer-review

175 Citations (Scopus)


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.

Original languageEnglish
Pages (from-to)3577-3580
Number of pages4
JournalPhysical Review Letters
Issue number21
Publication statusPublished - 1993
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)


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