Open Access

ARTICLE

Quantum size effects on PbSeS semiconductor quantum dots, an experimental and theoretical approach

M. I. Ahamed^a,*, T. Ayyasamy^b, N. Prathap^a, S. Ahamed^c

a Department of Electronics and Communication Engineering, E.G.S. Pillay Engineering College, Nagapattinam, Tamilnadu, India.
b Department of Aeronautical Engineering, Dhanalakshmi Srinivasan Engineering College (Autonomous), Perambalur, Tamilnadu, India.
c Department of Computer Science, College of Computer Science and Information Technology, Jazan University, Jazan, Kingdom of Saudi Arabia.

* Corresponding Author:

Chalcogenide Letters 2024, 21(3), 285-291. https://doi.org/10.15251/CL.2024.214.285

Received 01 December 2023; Accepted 25 March 2024;

Abstract

In recent times, zero-dimensional materials have gained importance from a fundamental and technological perspective. Lead selenium sulphide (PbSeS) is a potential candidate for finding interest in its zero-dimensional form among many compound semiconductors. Hence, in this communication, we explored the impact of quantum confinement effects on the energy band gap and wavelength of PbSeS semiconductor nanocrystals (Quantum dots) using cohesive energy and hyperbolic band models (HBM). Experimental data, such as scanning electron microscopy, UV-Vis-NIR, and PL spectroscopies were used to determine the size of nanoparticles and wavelength. PbSeS nanocrystals were also prepared by one-pot synthesis. The experimental results showed that the prepared PbSeS nanostructures are formed with tiny nanometer size, which showed a redshift of about 0.79eV in energy bandgap. A theoretical study showed that the energy bandgap in quantum-sized PbSeS differs from that in its bulk crystal.

---

Keywords

---