Photoluminescence studies of individual and few GaSb/GaAs quantum rings | Zendy

M. Young | Zendy; Christopher Woodhead | Zendy; Jonathan Roberts | Zendy; Yasir J. Noori | Zendy; M. T. Noble | Zendy; A. Krier | Zendy; E. P. Smakman | Zendy; P. M. Koenraad | Zendy; M. Hayne | Zendy; Robert J. Young | Zendy

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Photoluminescence studies of individual and few GaSb/GaAs quantum rings

Author(s) -

M. Young,

Christopher Woodhead,

Jonathan Roberts,

Yasir J. Noori,

M. T. Noble,

A. Krier,

E. P. Smakman,

P. M. Koenraad,

M. Hayne,

Robert J. Young

Publication year - 2014

Publication title -

aip advances

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.421

H-Index - 58

ISSN - 2158-3226

DOI - 10.1063/1.4902177

Subject(s) - blueshift , photoluminescence , quantum well , spectral line , excitation , quantum dot , recombination , condensed matter physics , optoelectronics , materials science , nanostructure , red shift , molecular physics , full width at half maximum , physics , chemistry , optics , nanotechnology , quantum mechanics , laser , biochemistry , gene , galaxy

We present optical studies of individual and few GaSb quantum rings embedded in a GaAs matrix. Contrary to expectation for type-II confinement, we measure rich spectra containing sharp lines. These lines originate from excitonic recombination and are observed to have resolution-limited full-width at half maximum of 200 µeV. The detail provided by these measurements allows the characteristic type-II blueshift, observed with increasing excitation power, to be studied at the level of individual nanostructures. These findings are in agreement with hole-charging being the origin of the observed blueshif

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