Fabrication and characterization of a PbTe quantum dots multilayer structure

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PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 26(1-4), 361-365. PO BOX 211, 1000 AE AMSTERDAM, NETHERLANDS: ELSEVIER SCIENCE BV (2005) .

ELSEVIER SCIENCE BV

Abstract

Multilayer PbTe quantum dots (QDs) and SiO2 were grown by pulsed laser deposition (PLD) and Plasma enhanced chemical vapor deposition (PECVD) techniques. The crystalline structure, QD size and size dispersion were observed by high-resolution transmission electron microscopy (HRTEM) measurements. This technique allows one to grow PbTe QDs as small as 1.8 nm diameter and 0.6 nm size dispersion. The whole structure can be used in a Fabry-Perot cavity for an optical device operating at the mid-infrared region. (C) 2004 Elsevier B.V. All rights reserved.



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