Synthesis of CdTe quantum dots by means of laser ablation of solids in liquids
Vol. 27 No. 3 (2014), Research Papers
Vol. 27 No. 3 (2014)

Synthesis of CdTe quantum dots by means of laser ablation of solids in liquids

Research Papers
Published 2014-09-15
M. A. Camacho López
Laboratorio de Fotomedicina, Biofotónica y Espectroscopia Láser de Pulsos Ultracortos, Facultad de Medicina, Universidad Autónoma del Estado de México
M. Camacho López
Laboratorio de Investigación y Desarrollo de Materiales Avanzados, Facultad de Química Universidad Autónoma del Estado de México
D. Reyes Contreras
Facultad de Ciencias, Universidad Autónoma del Estado de México
M. Mayorga Rojas
Facultad de Ciencias, Universidad Autónoma del Estado de México
L. E. Díaz Sánchez
Facultad de Ciencias, Universidad Autónoma del Estado de México
A. Reyes Contreras
Facultad de Ciencias, Universidad Autónoma del Estado de México
A. Arrieta Castañeda
Departamento de Física, Universidad Autónoma Metropolitana-Iztapalapa
R. Vilchis Nestor
Centro Conjunto de Investigación en Química Sustentable, UAEMex-UNAM
S. Camacho López
Centro de Investigación Científica y de Educación Superior de Ensenada
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Keywords

Quantum dots
Cadmium Telluride
Fotoluminescence. Puntos cuánticos
Teluro de cadmio
Fotoluminiscencia.

How to Cite

Camacho López, M. A., Camacho López, M., Reyes Contreras, D., Mayorga Rojas, M., Díaz Sánchez, L. E., Reyes Contreras, A., Arrieta Castañeda, A., Vilchis Nestor, R., & Camacho López, S. (2014). Synthesis of CdTe quantum dots by means of laser ablation of solids in liquids. Superficies Y Vacío, 27(3), 93-97. Retrieved from https://superficiesyvacio.smctsm.org.mx/index.php/SyV/article/view/142
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Abstract

In this paper we report results of the characterization of quantum dots (QDs) in acetone solution obtained by laser ablation of a cadmium telluride (CdTe) target. The laser ablation of CdTe was carried out by using pulses of 30 ps from a Nd:YAG laser. With the aim of varying the concentration of QDs in the solution, samples at different irradiation times were obtained. CdTe-colloidal solutions were characterized by UV-Vis and photoluminiscence spectroscopy. The size and shape of the quantum dots were obtained by transmission electron microscopy (TEM, HRTEM), showing spherical geometry nanostructures with a size distribution within a range of 4-200 nm, (average diameter of 6 nm. The photoluminescence spectra of CdTe quantum dots solutions show a broad band emission centered at 488 nm when the samples are excited 367.5 nm.
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