Authors:
José Brant de Campos (1), Kellen Venancio dos Santos (1), Camila Pelicarto Alves da Silva Botão (1), Eustáquio de Souza Baêta Júnior (1), Letícia dos Santos Aguilera (2), Fernando Massa Fernandes (3), Suzana Bottega Peripolli (1)
1- Rio de Janeiro State University, Postgraduate Program in Mechanical Engineering – PPG-EM, Rio de Janeiro, Brazil
2- Rio de Janeiro State University, Postgraduate Program in Materials, Rio de Janeiro, Brazil
3- Institute of Condensed Matter and Nanosciences (IMCN) of the Catholic University of Louvain, Belgium.
Abstract:
PbS semiconductor nanoparticles have been shown to be promising in applications such as microelectronics, optoelectronics and optics and it can be also useful in electroluminescent devices such as light-emitting diodes. In this system, when PbS crystal sizes are smaller than the Bohr radius, excitons become confined in all three spatial directions, a phenomenon called the quantum confinement. This effect is an interesting aspect to be studied, since optical and electronic properties of materials are size dependent of the particles. The use of an aqueous synthesis in 2-mercaptoethanol is an alternative to standard synthesis, which uses Oleic Acid (OA). In this work, the synthesis route for the production of PbS nanoparticles was evaluated through characterization by Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM) to investigate the distribution, morphology and size of the nanoparticles, as well as X-ray Diffraction (XRD) to confirm that the phase formed is galena (PbS).
DOI:
https://doi.org/10.59499/EP246280486
