Anisotropy of optical transitions in ordered ensemble of CdSe quantum rods

Abstract

We report on the observation of spectral dependence of absorption anisotropy in a CdSe quantum rod (QR) ensemble, which is aligned in a polymer film with a nanocrystal concentration of $2\times {10}^{-5}\mathrm{M}$. The experimental data on the polarization direction and anisotropy factor were obtained for the lowest excitonic transition and the second group of transitions in the QR. The nonzero constant value of anisotropy was investigated for the high-energy transitions, and is evidence of the one-dimensional confinement in the QR.

© 2013 Optical Society of America

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