dor_id: 45291

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100.1.#.a: Morales Saavedra, Omar G.; Gutiérrez Lazos, Claudio D.; Ortega López, Mauricio; Rodriguez Rosales, Antonio A.

524.#.#.a: Morales Saavedra, Omar G., et al. (2015). Fabrication and photophysical studies of CdTe quantum-dots dispersed in SiO2 sonogel optical-glasses. Journal of Applied Research and Technology; Vol. 13 Núm. 6. Recuperado de https://repositorio.unam.mx/contenidos/45291

245.1.0.a: Fabrication and photophysical studies of CdTe quantum-dots dispersed in SiO2 sonogel optical-glasses

502.#.#.c: Universidad Nacional Autónoma de México

561.1.#.a: Instituto de Ciencias Aplicadas y Tecnología, UNAM

264.#.0.c: 2015

264.#.1.c: 2015-12-01

653.#.#.a: Cadmium telluride; Quantum dot; Spectroscopy; Nonlinear optics; Hybrid material; Sol–gel

506.1.#.a: La titularidad de los derechos patrimoniales de esta obra pertenece a las instituciones editoras. Su uso se rige por una licencia Creative Commons BY-NC-SA 4.0 Internacional, https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode.es, para un uso diferente consultar al responsable jurídico del repositorio por medio del correo electrónico gabriel.ascanio@icat.unam.mx

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041.#.7.h: eng

520.3.#.a: The catalyst-free sonogel route has been implemented to fabricate highly pure SiO2 glasses as host materials for CdTe quantum dot nanocrystals synthesized in aqueous solution. Developed CdTe-based inorganic–inorganic hybrid composites exhibited rigid bulk structures with controllable geometrical shapes and dopant concentrations, allowing the control of the optical properties in the solid-state confinement. Comprehensive linear and nonlinear photophysical characterizations were performed according to UV–vis absorbance, Raman and photoluminescent spectroscopies; the linear refractive indices of highly/lowly CdTe-doped samples were also estimated according to the Brewster angle technique. Since the hybrid glasses are amorphous in nature, the cubic nonlinear optical activity of these composites has been tested via the Z-Scan technique. Results show that the CdTe quantum dots were homogeneously embedded within the SiO2-sonogel matrix with only small guest–host molecular interactions and preserving their strong photoluminescent properties; thus providing advanced solid-state heterostructured nanocomposite materials suitable for current technological photonic applications. All Rights Reserved © 2015 Universidad Nacional Autónoma de México, Centro de Ciencias Aplicadas y Desarrollo Tecnológico. This is an open access item distributed under the Creative Commons CC License BY-NC-ND 4.0

773.1.#.t: Journal of Applied Research and Technology; Vol. 13 Núm. 6

773.1.#.o: https://jart.icat.unam.mx/index.php/jart

022.#.#.a: ISSN electrónico: 2448-6736; ISSN: 1665-6423

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doi: https://doi.org/10.1016/j.jart.2015.10.013

harvesting_date: 2023-11-08 13:10:00.0

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Artículo

Fabrication and photophysical studies of CdTe quantum-dots dispersed in SiO2 sonogel optical-glasses

Morales Saavedra, Omar G.; Gutiérrez Lazos, Claudio D.; Ortega López, Mauricio; Rodriguez Rosales, Antonio A.

Instituto de Ciencias Aplicadas y Tecnología, UNAM, publicado en Journal of Applied Research and Technology, y cosechado de Revistas UNAM

Licencia de uso

Procedencia del contenido

Cita

Morales Saavedra, Omar G., et al. (2015). Fabrication and photophysical studies of CdTe quantum-dots dispersed in SiO2 sonogel optical-glasses. Journal of Applied Research and Technology; Vol. 13 Núm. 6. Recuperado de https://repositorio.unam.mx/contenidos/45291

Descripción del recurso

Autor(es)
Morales Saavedra, Omar G.; Gutiérrez Lazos, Claudio D.; Ortega López, Mauricio; Rodriguez Rosales, Antonio A.
Tipo
Artículo de Investigación
Área del conocimiento
Ingenierías
Título
Fabrication and photophysical studies of CdTe quantum-dots dispersed in SiO2 sonogel optical-glasses
Fecha
2015-12-01
Resumen
The catalyst-free sonogel route has been implemented to fabricate highly pure SiO2 glasses as host materials for CdTe quantum dot nanocrystals synthesized in aqueous solution. Developed CdTe-based inorganic–inorganic hybrid composites exhibited rigid bulk structures with controllable geometrical shapes and dopant concentrations, allowing the control of the optical properties in the solid-state confinement. Comprehensive linear and nonlinear photophysical characterizations were performed according to UV–vis absorbance, Raman and photoluminescent spectroscopies; the linear refractive indices of highly/lowly CdTe-doped samples were also estimated according to the Brewster angle technique. Since the hybrid glasses are amorphous in nature, the cubic nonlinear optical activity of these composites has been tested via the Z-Scan technique. Results show that the CdTe quantum dots were homogeneously embedded within the SiO2-sonogel matrix with only small guest–host molecular interactions and preserving their strong photoluminescent properties; thus providing advanced solid-state heterostructured nanocomposite materials suitable for current technological photonic applications. All Rights Reserved © 2015 Universidad Nacional Autónoma de México, Centro de Ciencias Aplicadas y Desarrollo Tecnológico. This is an open access item distributed under the Creative Commons CC License BY-NC-ND 4.0
Tema
Cadmium telluride; Quantum dot; Spectroscopy; Nonlinear optics; Hybrid material; Sol–gel
Idioma
eng
ISSN
ISSN electrónico: 2448-6736; ISSN: 1665-6423

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