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Type: Artigo de periódico
Title: SiO2/PbTe quantum-dot multilayer production and characterization
Author: Rodriguez, E
Jimenez, E
Padilha, LA
Neves, AAR
Jacob, GJ
Cesar, CL
Barbosa, LC
Abstract: We report the fabrication of multilayer structures containing layers of PbTe quantum dots (QDs) spaced by 15-20 nm thick SiO2 layers. The QDs were grown by the laser ablation of a PbTe target using the second harmonic of Nd:YAG laser in an argon atmosphere. The SiO2 layers were fabricated by plasma chemical vapor deposition using tetramethoxysilane as a precursor. The influence of the ablation time on the size and size distribution of the QDs is studied by high-resolution transmission electron microscopy. Optical absorption measurements show clearly the QDs confinement effects. (C) 2005 American Institute of Physics.
Country: EUA
Editor: Amer Inst Physics
Citation: Applied Physics Letters. Amer Inst Physics, v. 86, n. 11, 2005.
Rights: aberto
Identifier DOI: 10.1063/1.1887823
Date Issue: 2005
Appears in Collections:Unicamp - Artigos e Outros Documentos

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