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Proceedings Paper

Field-induced Stark effects in Ag-coated CdS quantum dots
Author(s): Koo-Chul Je; Sang Youp Yim; Jaehoon Lee; Eun-Hee Jeang; Seung-Han Park
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Paper Abstract

Field-induced Stark effects in Ag-coated CdS quantum dot structures are presented. We observe clear exciton peaks due to the quantum confinement effect and the surface plasmon effect in Ag-coated CdS quantum dot fabricated by gamma ray irradiation method. In addition, we observed also a dominant red-shift of the CdS exciton absorption peak as the Wannier Stark effect, implying the strong local field effect in the metal-coated semiconductor composite quantum dot system. The Stark shift of the exciton peak is investigated as a function of the local field for different silver thickness and various sizes of quantum dots based on the effective-mass Hamiltonian using the numerical-matrix-diagonalization method.

Paper Details

Date Published: 4 April 2005
PDF: 6 pages
Proc. SPIE 5734, Quantum Dots, Nanoparticles, and Nanoclusters II, (4 April 2005); doi: 10.1117/12.601480
Show Author Affiliations
Koo-Chul Je, Yonsei Univ. (South Korea)
Sang Youp Yim, Yonsei Univ. (South Korea)
Jaehoon Lee, Yonsei Univ. (South Korea)
Eun-Hee Jeang, Yonsei Univ. (South Korea)
Seung-Han Park, Yonsei Univ. (South Korea)


Published in SPIE Proceedings Vol. 5734:
Quantum Dots, Nanoparticles, and Nanoclusters II
Diana L. Huffaker; Pallab K. Bhattacharya, Editor(s)

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