Linear polarization in the emission spectra of multiexciton states in InAs/GaAs self-assembled quantum dots

✍ Scribed by Weidong Sheng

• Publisher: Elsevier Science
• Year: 2008
• Tongue: English
• Weight: 387 KB
• Volume: 40
• Category: Article
• ISSN: 1386-9477
• DOI: 10.1016/j.physe.2007.08.117

✦ Synopsis

We present a theoretical study of the optical anisotropy in the emission spectra from multiexciton complexes in InAs/GaAs selfassembled quantum dots by empirical tight-binding and configuration-interaction approaches. The linear polarization in the multiexciton emission is calculated as a function of the aspect ratio of the structures. The results are compared with those obtained for non-interacting electron-hole pairs. The optical anisotropy in the emission spectra of multiexciton states is found to rely only on the geometry of the quantum dots, which is almost independent of carrier-carrier interactions.