SiO2/PbTe quantum-dot multilayer production and characterization

E. Rodríguez; E. Jimenez; L. A. Padilha; A. A.R. Neves; G. J. Jacob; C. L. César; L. C. Barbosa

doi:10.1063/1.1887823

SiO₂/PbTe quantum-dot multilayer production and characterization

E. Rodríguez, E. Jimenez, L. A. Padilha, A. A.R. Neves, G. J. Jacob, C. L. César, L. C. Barbosa

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38 Citas (Scopus)

Resumen

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.

Idioma original	Inglés
Número de artículo	113117
Páginas (desde-hasta)	1-3
Número de páginas	3
Publicación	Applied Physics Letters
Volumen	86
N.º	11
DOI	https://doi.org/10.1063/1.1887823
Estado	Publicada - 14 mar. 2005
Publicado de forma externa	Sí

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title = "SiO2/PbTe quantum-dot multilayer production and characterization",

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.",

author = "E. Rodr{\'i}guez and E. Jimenez and Padilha, {L. A.} and Neves, {A. A.R.} and Jacob, {G. J.} and C{\'e}sar, {C. L.} and Barbosa, {L. C.}",

note = "Funding Information: The authors acknowledge FAPESP, CEPOF, and PRONEX for the financial support. They also thank the Laborat{\'o}rio de Microscopia Eletr{\^o}nica from LNLS for the HRTEM measurements.",

year = "2005",

month = mar,

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doi = "10.1063/1.1887823",

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T1 - SiO2/PbTe quantum-dot multilayer production and characterization

AU - Rodríguez, E.

AU - Jimenez, E.

AU - Padilha, L. A.

AU - Neves, A. A.R.

AU - Jacob, G. J.

AU - César, C. L.

AU - Barbosa, L. C.

N1 - Funding Information: The authors acknowledge FAPESP, CEPOF, and PRONEX for the financial support. They also thank the Laboratório de Microscopia Eletrônica from LNLS for the HRTEM measurements.

PY - 2005/3/14

Y1 - 2005/3/14

N2 - 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.

AB - 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.

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