Safwan Saleh Abdelmwla Soliman <br/><br/>
Theoretical study for negative and positive charges in semicoductor quantum Dots /  
 دراسة نظرية للشحنات السالبة و الموجبة فى الابار الكمية النقطية الشبه موصلة 
Safwan Saleh Abdelmwla Soliman ; Supervised Tharwat Mahmood Elsherbini , Nagwa Ahemed Elmeshad , Sami Hanafi Allam 
 - Cairo :   Safwan Saleh Abdelmwla Soliman ,   2010 
 - 137 P. :   charts ;   25cm 
<br/><br/>Thesis (Ph.D.) - Cairo University - Faculty of Science - Department of Physics 
<br/><br/> In this dissertation we study the dependence of binding energy and stability of positive and negative charges on the variation of external tunable parameters such as the geometry of the dot, the confinement potential, and an applied lateral electric field. We introduced a trial wave function not only to satisfy the strong confinement regime, but also to yield the correct results in the weak confinement regime inside the 3-D quantum dots QDs 
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<br/><br/><label>Subjects--Index Terms: </label>Charged exciton Quantum dot Semiconductor-nanostructuer