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Photoluminescence of single quantum wires and quantum dots |
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| Authors: | V P Kochereshko V N Kats A V Platonov R A Suris G E Cirlin A D Buravlev Yu B Samsonenko L Besombes C Le Gal H Mariette |
| Institution: | 1. Ioffe Physical-Technical Institute, Politekhnicheskaya 26, 194021, St.Petersburg, Russia 4. Spin Optics Laboratory, St. Petersburg State University, Petrodvorets, Saint Petersburg, Russia 2. St. Petersburg Physics and Technology Center for Research and Education, Russian Academy of Sciences, Khlopina 8/3, 195220, St. Petersburg, Russia 3. CEA-CNRS Group ??Nanophysigue et Semiconducteurs??, CEA, INAC, SP2M, AND Institut N??el, 17 des Martyrs, F-38054, Grenoble, France |
| Abstract: | The results of a study into the photoluminescence spectra of a set of quantum dots based on GaAs enclosed in AlGaAs nanowires are presented. The steady state and time resolved spectra of photoluminescence under optical excitation both from an array of quantum wires/dots and a single quantum wire/dot have been measured. In the photoluminescence spectra of single quantum dots, emission lines of excitons, biexcitons and tritons have been found. The binding energy of the biexciton in the studied structures was deduced to be 8 meV. |
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