Effect of shell thickness on exciton and biexciton binding energy of a ZnSe/ZnS core/shell quantum dot

Details Effect of shell thickness on exciton and biexciton binding energy of a ZnSe/ZnS core/shell quantum dot Effect of shell thickness on exciton and biexciton binding energy of a ZnSe/ZnS core/shell quantum dot

2009-10-18

arxiv.org/abs/0910.3402v1

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 Figures

Scientific paper

The exciton and biexciton binding energy have been studied for a ZnSe/ZnS core/shell quantum dot using WKB (Wentzel-Kramers-Brillouin) approximation. The exciton binding energy increases for small shell thickness and for large thickness, the binding energy again starts decreasing. A similar result is obtained for biexcitons where for thicker shells, the biexciton attains antibonding.

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