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Proceedings Paper

Optical properties of II-VI semiconductor nanoparticles
Author(s): Rolf Neuendorf; Adriane Brysch; Giorah Bour; Uwe Kreibig
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Paper Abstract

Nanoparticles (clusters) of type II-VI semiconductor materials (CdS, CdSe, CdTe) have been prepared with average diameters between 1 nm and 25 nm using precipitation methods in aqueous or organic solutions and deposited on oxidic substrates. The intrinsic electronic structure of these particles with sizes around the excitonic Bohr radius of the respective materials has been investigated by a combination of optical spectroscopy methods including reflection/transmission measurements, photoluminescence, Raman spectroscopy, absorption saturation and second harmonic generation (SHG) measurements. Together with supporting information on the morphology and the arrangement of the particles obtained from Transmission Electron Microscopy (TEM), Scanning Probe Microscopy and X-Ray diffraction we were able to determine the size dependence of excitonic excitations within the clusters, following in good agreement theoretical predictions derived from quantum mechanical, extended particle-in-a-box models.

Paper Details

Date Published: 5 December 2001
PDF: 9 pages
Proc. SPIE 4456, Controlling and Using Light in Nanometric Domains, (5 December 2001); doi: 10.1117/12.449536
Show Author Affiliations
Rolf Neuendorf, RWTH Aachen and Univ. Oldenburg (Germany)
Adriane Brysch, RWTH Aachen and Fraunhofer Institut fuer Lasertechnik (Germany)
Giorah Bour, RWTH Aachen (Germany)
Uwe Kreibig, RWTH Aachen (Germany)

Published in SPIE Proceedings Vol. 4456:
Controlling and Using Light in Nanometric Domains
Aaron Lewis; H. Kumar Wickramasinghe; Katharina H.B. Al-Shamery, Editor(s)

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