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

Authors

  • 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

Keywords:

Quantum dots, Cadmium Telluride, Fotoluminescence.

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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Published

2014-09-15

Issue

Vol. 27 No. 3 (2014)

Section

Research Papers

License

©2025 by the authors; licensee SMCTSM, Mexico. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/). 

How to Cite

Synthesis of CdTe quantum dots by means of laser ablation of solids in liquids. (2014). Superficies Y Vacío, 27(3), 93-97. https://superficiesyvacio.smctsm.org.mx/index.php/SyV/article/view/142