Exciton spectrum in multi-shell hexagonal semiconductor nanotube

The theory of exciton spectrum in multi-shell hexagonal semiconductor nanotube is developed within the effective masses and rectangular potentials approximations using the method of effective potential. It is shown that the exciton binding energy for all states non-monotonously depends on the inner...

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Veröffentlicht in:	arXiv.org 2012-10
Hauptverfasser:	Makhanets, O M, Gutsul, V I, Tsiupak, N R, Voitsekhivska, O M
Format:	Artikel
Sprache:	eng
Schlagworte:	Excitation spectra Excitons Nanotubes Physics - Mesoscale and Nanoscale Physics
Online-Zugang:	Volltext
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Zusammenfassung:	The theory of exciton spectrum in multi-shell hexagonal semiconductor nanotube is developed within the effective masses and rectangular potentials approximations using the method of effective potential. It is shown that the exciton binding energy for all states non-monotonously depends on the inner wire diameter, approaching several minimal and maximal magnitudes. The obtained theoretical results explain well the experimental positions of luminescence peaks for GaAs/Al_{0.4}Ga_{0.6}As nanotubes.
ISSN:	2331-8422
DOI:	10.48550/arxiv.1210.2207