Photocurrent spectroscopy of self assembled InAs/GaInAsP/InP(113)B quantum dots

Abdallah Sakri (1) , Patrice Miska (1) , Charly Platz (1) , Daniel Lemoine (1) , Jacky Even (1) , Olivier Dehaese (1) , Karine Tavernier (1)

1 INSA Rennes - Institut National des Sciences Appliquées - Rennes

In this paper we present photocurrent (PC) spectroscopy of InAs/InP(113)B quantum dots (QD) as a function of bias and temperature. The PC spectra reflect the optical absorption of the QDs layers and reveal the QD electronic structure. A simple model, used to determine the energy levels into the QDs, gives results consistent with the PC spectra. Morever, the PC signal is governed by a competition between recombinaison and escape processes (themal and tunneling escape) of photogenerated carriers.

Mots clés: heterostructures; InAs/InP(113)B; quantum dots; photocurrent

Domaines: Optique / photonique

Abdallah Sakri, Patrice Miska, Charly Platz, Daniel Lemoine, Jacky Even, et al.. Photocurrent spectroscopy of self assembled InAs/GaInAsP/InP(113)B quantum dots. GDR Nanoélectronique Journées Scientifiques, Jan 2003, Grenoble, France. ⟨hal-00727159⟩