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Research output: Contribution to Journal/Magazine › Journal article › peer-review
Research output: Contribution to Journal/Magazine › Journal article › peer-review
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TY - JOUR
T1 - Photoluminescence studies of individual and few GaSb/GaAs quantum rings
AU - Young, M. P.
AU - Woodhead, C. S.
AU - Roberts, Jonny
AU - Noori, Y. J.
AU - Noble, M. T.
AU - Krier, A.
AU - Smakman, E. P.
AU - Koenraad, P. M.
AU - Hayne, M.
AU - Young, R. J.
N1 - © © 2014 Author(s).. All article content, except where otherwise noted, is licensed under a Creative Commons Attribution 3.0 Unported License.
PY - 2014/11/1
Y1 - 2014/11/1
N2 - 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 blueshift
AB - 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 blueshift
U2 - 10.1063/1.4902177
DO - 10.1063/1.4902177
M3 - Journal article
VL - 4
JO - AIP Advances
JF - AIP Advances
IS - 11
M1 - 117127
ER -