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Surface Plasmon Enhanced Photoluminescence in InAs Quantum Dots by Spherical Ag Nanoparticles

Published online by Cambridge University Press:  12 April 2012

Scott C. Mangham
Affiliation:
Department of Electrical Engineering, University of Arkansas, Fayetteville, AR 72701, U.S.A.
Jiang Wu
Affiliation:
Department of Electrical Engineering, University of Arkansas, Fayetteville, AR 72701, U.S.A.
Seungyong Lee
Affiliation:
Department of Electrical Engineering, University of Arkansas, Fayetteville, AR 72701, U.S.A.
Vanga R. Reddy
Affiliation:
Department of Electrical Engineering, University of Arkansas, Fayetteville, AR 72701, U.S.A.
Omar Manasreh
Affiliation:
Department of Electrical Engineering, University of Arkansas, Fayetteville, AR 72701, U.S.A.
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Abstract

Reported is the photoluminescence enhancement due to surface plasmon from the metallic nanoparticles that are linked to the surface of a GaAs capped InAs quantum dots. In this study, spherical silver (Ag) nanoparticles are investigated where the different densities of Ag nanoparticles are deposited on four InAs/GaAs quantum dot samples. The PL enhancement due to Ag nanoparticles has been observed to be improved with increasing nanoparticle density. The photoluminescence enhancement is interpreted in terms of enhanced scattering from the surface plasmon excited in the Ag nanoparticles.

Type
Research Article
Copyright
Copyright © Materials Research Society 2012

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