Electronic and optical properties of Cd 1-x Zn x S nanocrystals

N. Safta (), A. Sakly, H. Mejri and Y. Bouazra

The European Physical Journal B: Condensed Matter and Complex Systems, 2006, vol. 51, issue 1, 75-78

Abstract: We report a numerical simulation of the conduction and valence band edges of Cd 1-x Zn x S 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-x Zn x S 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-x Zn x S nanocrystals. An attempt to explain all the results is presented. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2006

Keywords: 73.21.La Quantum dots; 73.22.-f Electronic structure of nanoscale materials: clusters; nanoparticles; nanotubes; and nanocrystals; 71.55.Gs II-VI semiconductors (search for similar items in EconPapers)
Date: 2006
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DOI: 10.1140/epjb/e2006-00194-9

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