Femtosecond electronic dephasing in CdSe nanocrystals
Conference
·
OSTI ID:141403
- Lawrence Berkeley Laboratory, CA (United States)
Semiconductor nanocrystals of a size comparable to or smaller than the bulk exciton exhibit a number of novel properties resulting from the three-dimensional confinement. The electronic properties of CdSe nanocrystals have been investigated previously using a variety of techniques. This talk describes measurements of femtosecond electronic dephasing using a novel mode-suppression technique. The technique enables the separation of coherently excited LO phonons from the underlying electron-hole dephasing by suppressing the quantum beats. Contributions to the dephasing from acoustic phonons and surface trapping will be discussed.
- OSTI ID:
- 141403
- Report Number(s):
- CONF-930304--
- Country of Publication:
- United States
- Language:
- English
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