Identification of fullerene-like CdSe nanoparticles from optical spectroscopy calculations

Details Identification of fullerene-like CdSe nanoparticles from optical spectroscopy calculations Identification of fullerene-like CdSe nanoparticles from optical spectroscopy calculations

2006-05-22

arxiv.org/abs/cond-mat/0605517v2

Phys. Rev. B 2007

Physics

Condensed Matter

Materials Science

Scientific paper

Semiconducting nanoparticles are the building blocks of optical nanodevices as their electronic states, and therefore light absorption and emission, can be controlled by modifying their size and shape. CdSe is perhaps the most studied of these nanoparticles, due to the efficiency of its synthesis, the high quality of the resulting samples, and the fact that the optical gap is in the visible range. In this article, we study light absorption of CdSe nanostructures with sizes up to 1.5 nm within density functional theory. We study both bulk fragments with wurtzite symmetry and novel fullerene-like core-cage structures. The comparison with recent experimental optical spectra allows us to confirm the synthesis of these fullerene-like CdSe clusters.

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