Eur. Phys. J. B 51, 75-78 (2006)
https://doi.org/10.1140/epjb/e2006-00194-9

Electronic and optical properties of Cd_1-xZn_xS nanocrystals

¹ Laboratoire de Physique des Semi-conducteurs et des Composants Électroniques, Faculté des Sciences, Avenue de l'environnement, 5000 Monastir, Tunisia
² Unité de Physique Quantique, Faculté des Sciences, Avenue de l'environnement, 5000 Monastir, Tunisia
³ École Préparatoire aux Académies Militaires, Avenue Maréchal Tito, 4029 Sousse, Tunisia

Corresponding author: ^a saftanabil@yahoo.fr

Received: 29 November 2005
Revised: 10 March 2006
Published online: 31 May 2006

Abstract

We report a numerical simulation of the conduction and valence band edges of Cd_1-xZn_xS nanocrystallites using a one — dimensional potential model. Electron — hole pairs are assumed to be confined in nanospheres of finite barrier heights. Optical absorption measurements are used to fit the bandgap of the Cd_1-xZn_xS nanocrystal material. A theoretical analysis is also made to calculate the energy location of bound excitons and the oscillator strength of interband transitions as a function of zinc composition. The aim of the latter study is to investigate the optical behavior of Cd_1-xZn_xS nanocrystals. An attempt to explain all the results is presented.