Quantum Confinement Regimes in CdTe Nanocrystals Probed by Single Dot Spectroscopy: From Strong Confinement to the Bulk Limit

Sufficiently large semiconductor nanocrystals are a useful model system to characterize bulk-like excitons, with the electron and hole bound predominantly by Coulomb interaction. We present optical characterization of excitons in individual giant CdTe nanocrystals with diameters up to 25.5 nm at 4.2...

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Veröffentlicht in:	ACS nano 2015-08, Vol.9 (8), p.7840-7845
Hauptverfasser:	Tilchin, Jenya, Rabouw, Freddy T, Isarov, Maya, Vaxenburg, Roman, Van Dijk-Moes, Relinde J. A, Lifshitz, Efrat, Vanmaekelbergh, Daniel
Format:	Artikel
Sprache:	eng
Schlagworte:	Cadmium tellurides Constants Excitons Nanocrystals Nanostructure Position (location) Quantum confinement Semiconductors
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creator	Tilchin, Jenya Rabouw, Freddy T Isarov, Maya Vaxenburg, Roman Van Dijk-Moes, Relinde J. A Lifshitz, Efrat Vanmaekelbergh, Daniel
description	Sufficiently large semiconductor nanocrystals are a useful model system to characterize bulk-like excitons, with the electron and hole bound predominantly by Coulomb interaction. We present optical characterization of excitons in individual giant CdTe nanocrystals with diameters up to 25.5 nm at 4.2 K under varying excitation power and magnetic field strength. We determine values for the biexciton binding energy, diamagnetic shift constant, and Landé g-factor, which approach the bulk values with increasing nanocrystal size.
doi_str_mv	10.1021/acsnano.5b02597
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subjects	Cadmium tellurides Constants Excitons Nanocrystals Nanostructure Position (location) Quantum confinement Semiconductors
title	Quantum Confinement Regimes in CdTe Nanocrystals Probed by Single Dot Spectroscopy: From Strong Confinement to the Bulk Limit
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