Abstract
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 language | English |
|---|---|
| Pages (from-to) | 3577-3580 |
| Number of pages | 4 |
| Journal | Physical Review Letters |
| Volume | 71 |
| Issue number | 21 |
| DOIs | |
| Publication status | Published - 1993 |
| Externally published | Yes |
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ASJC Scopus subject areas
- Physics and Astronomy(all)
Cite this
Electron-phonon interactions and excitonic dephasing in semiconductor nanocrystals. / Takagahara, Toshihide.
In: Physical Review Letters, Vol. 71, No. 21, 1993, p. 3577-3580.Research output: Contribution to journal › Article
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TY - JOUR
T1 - Electron-phonon interactions and excitonic dephasing in semiconductor nanocrystals
AU - Takagahara, Toshihide
PY - 1993
Y1 - 1993
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0001213445&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0001213445&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.71.3577
DO - 10.1103/PhysRevLett.71.3577
M3 - Article
VL - 71
SP - 3577
EP - 3580
JO - Physical Review Letters
JF - Physical Review Letters
SN - 0031-9007
IS - 21
ER -