We investigate the influence of optical pump power on a series of charging events of individual quantum dots embedded in a field effect structure. Increasing the optical pump powers moves all charging events towards more negative voltages and charged biexciton states in addition to single exciton states are observed. The linear shift in voltage with pump power is explained by the accumulation of photogenerated holes within the structure. © 2002 Elsevier Science B.V. All rights reserved.
|Number of pages||2|
|Journal||Physica E: Low-Dimensional Systems and Nanostructures|
|Publication status||Published - Apr 2003|
|Event||Proceedings pf the International Conference on Superlattices - Touluse, France|
Duration: 22 Jul 2002 → 26 Jul 2002
- Electric field
- Quantum dots