Photoluminescence Stokes shift and exciton fine structure in CdTe nanocrystals

Details Photoluminescence Stokes shift and exciton fine structure in CdTe nanocrystals Photoluminescence Stokes shift and exciton fine structure in CdTe nanocrystals

2001-09-06

arxiv.org/abs/cond-mat/0109102v1

Phys. Rev. B 64, 113303 (2001)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

8 pages, 4 figures, LaTeX

Scientific paper

10.1103/PhysRevB.64.113303

The photoluminescence spectra of spherical CdTe nanocrystals with zincblende structure are studied by size-selective spectroscopic techniques. We observe a resonant Stokes shift of 15 meV when the excitation laser energy is tuned to the red side of the absorption band at 2.236 eV. The experimental data are analyzed within a symmetry-based tight-binding theory of the exciton spectrum, which is first shown to account for the size dependence of the fundamental gap reported previously in the literature. The theoretical Stokes shift presented as a function of the gap shows a good agreement with the experimental data, indicating that the measured Stokes shift indeed arises from the electron-hole exchange interaction.

Affiliated with

Also associated with

No associations

Rating

Photoluminescence Stokes shift and exciton fine structure in CdTe nanocrystals does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Photoluminescence Stokes shift and exciton fine structure in CdTe nanocrystals, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Photoluminescence Stokes shift and exciton fine structure in CdTe nanocrystals will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-384482