Exciton spectroscopy on single CdSe/ZnSe quantum dot photodiodes

✍ Scribed by S. Michaelis de Vasconcellos; A. Pawlis; C. Arens; M. Panfilova; A. Zrenner; D. Schikora; K. Lischka

• Publisher: Elsevier Science
• Year: 2009
• Tongue: English
• Weight: 356 KB
• Volume: 40
• Category: Article
• ISSN: 0026-2692
• DOI: 10.1016/j.mejo.2008.07.055

✦ Synopsis

We have investigated the properties of neutral and charged excitons in single CdSe/ZnSe QD photodiodes by m-photoluminescence spectroscopy. By applying a bias voltage, we have been able to control the number of electrons in a single QD by shifting the energy levels of the QD with respect to the Fermi level in the back contact. Also the quantum-confined Stark effect was observed as a function of the applied electric field.