
Proceedings Paper
Recombination in quantum dot ensemblesFormat | Member Price | Non-Member Price |
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Paper Abstract
We have calculated recombination rates of an inhomogeneous ensemble of 106 dots by summing localized
recombination rates at individual dots, with occupation of dot states in the inhomogeneous distribution specified by
Fermi Dirac statistics. We assign the same single dot recombination lifetime (1 ns) to all recombination processes to
reveal the effect of localization on the overall rates. For the simplest system of the ground states alone deep state,
radiative and Auger recombination processes depend in a similar manner upon the population of electrons in the ground
states Consequently the light-current curves for the ground state are approximately linear and are not sensitive to the
dominant non-radiative process. When excited states are included Auger recombination becomes dominant at high
ensemble populations due to the higher degeneracy assigned to the excited states. While the form of the light-current
curves of the total dot system do depend upon the dominant recombination process, an analysis based on power law
relations with respect to the ensemble electron population are not appropriate.
Paper Details
Date Published: 8 February 2007
PDF: 10 pages
Proc. SPIE 6485, Novel In-Plane Semiconductor Lasers VI, 64850J (8 February 2007); doi: 10.1117/12.714264
Published in SPIE Proceedings Vol. 6485:
Novel In-Plane Semiconductor Lasers VI
Carmen Mermelstein; David P. Bour, Editor(s)
PDF: 10 pages
Proc. SPIE 6485, Novel In-Plane Semiconductor Lasers VI, 64850J (8 February 2007); doi: 10.1117/12.714264
Show Author Affiliations
Peter Blood, Cardiff Univ. (United Kingdom)
Helen Pask, Cardiff Univ. (United Kingdom)
Helen Pask, Cardiff Univ. (United Kingdom)
Published in SPIE Proceedings Vol. 6485:
Novel In-Plane Semiconductor Lasers VI
Carmen Mermelstein; David P. Bour, Editor(s)
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