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Fizika i Tekhnika Poluprovodnikov, 2016, Volume 50, Issue 12, Pages 1675–1678
(Mi phts6292)
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XX International Symposium ''Nanophysics and Nanoelectronics'', Nizhny Novgorod, March 14-18, 2016
Polarization of the photoluminescence of quantum dots incorporated into quantum wires
A. V. Platonova, V. P. Kochereshkoab, V. N. Katsa, G. E. Cirlina, A. D. Bouravleva, D. V. Avdoshinaa, A. Delgac, L. Besombesc, H. Mariettec a Ioffe Institute, St. Petersburg
b Saint Petersburg State University
c CEA-CNRS group "Nanophysique et Semiconducteurs",
CEA, INAC, SP2M, and Institut Néel, Grenoble, France
Abstract:
The photoluminescence spectra of individual quantum dots incorporated into a quantum wire are studied. From the behavior of the spectra in a magnetic field, it is possible to estimate the exciton binding energy in a quantum dot incorporated into a quantum wire. It is found that the exciton photoluminescence signal emitted from a quantum dot along the direction of the nanowire axis is linearly polarized. At the same time, the photoluminescence signal propagating in the direction orthogonal to the nanowire axis is practically unpolarized. The experimentally observed effect is attributed to the nonaxial arrangement of the dot in the wire under conditions of a huge increase in the exciton binding energy due to the effect of the image potential on the exciton.
Received: 27.04.2016 Accepted: 10.05.2016
Citation:
A. V. Platonov, V. P. Kochereshko, V. N. Kats, G. E. Cirlin, A. D. Bouravlev, D. V. Avdoshina, A. Delga, L. Besombes, H. Mariette, “Polarization of the photoluminescence of quantum dots incorporated into quantum wires”, Fizika i Tekhnika Poluprovodnikov, 50:12 (2016), 1675–1678; Semiconductors, 50:12 (2016), 1647–1650
Linking options:
https://www.mathnet.ru/eng/phts6292 https://www.mathnet.ru/eng/phts/v50/i12/p1675
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