Fine structure of highly charged quantum dot excitons: Turning dark into bright states

B. Urbaszek; R. J. Warburton; K. Karrai; B. D. Gerardot; P. M. Petroff; J. M. Garcia

doi:10.1002/pssc.200304008

Fine structure of highly charged quantum dot excitons: Turning dark into bright states

B. Urbaszek, R. J. Warburton, K. Karrai, B. D. Gerardot, P. M. Petroff, J. M. Garcia

School of Engineering & Physical Sciences

Research output: Contribution to journal › Article › peer-review

1 Citation (Scopus)

Abstract

The emission of a neutral exciton in a symmetric semiconductor quantum dot is split by the isotropic electron-hole exchange interaction into dark and bright states. We demonstrate that for a doubly charged exciton, there are also two states split by the electron-hole exchange, but both states are now bright. We also uncover a fine structure in the emission from the triply charged exciton, the singly and doubly charged biexcitons. By measuring these splittings we can access the isotropic exchange energies for holes in the ground and electrons ground and excited states. © 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

Original language	English
Pages (from-to)	421-425
Number of pages	5
Journal	Physica Status Solidi C - Current Topics in Solid State Physics
Volume	1
Issue number	3
DOIs	https://doi.org/10.1002/pssc.200304008
Publication status	Published - 2004

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title = "Fine structure of highly charged quantum dot excitons: Turning dark into bright states",

abstract = "The emission of a neutral exciton in a symmetric semiconductor quantum dot is split by the isotropic electron-hole exchange interaction into dark and bright states. We demonstrate that for a doubly charged exciton, there are also two states split by the electron-hole exchange, but both states are now bright. We also uncover a fine structure in the emission from the triply charged exciton, the singly and doubly charged biexcitons. By measuring these splittings we can access the isotropic exchange energies for holes in the ground and electrons ground and excited states. {\textcopyright} 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.",

author = "B. Urbaszek and Warburton, {R. J.} and K. Karrai and Gerardot, {B. D.} and Petroff, {P. M.} and Garcia, {J. M.}",

year = "2004",

doi = "10.1002/pssc.200304008",

language = "English",

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journal = "Physica Status Solidi C - Current Topics in Solid State Physics",

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TY - JOUR

T1 - Fine structure of highly charged quantum dot excitons

T2 - Turning dark into bright states

AU - Urbaszek, B.

AU - Warburton, R. J.

AU - Karrai, K.

AU - Gerardot, B. D.

AU - Petroff, P. M.

AU - Garcia, J. M.

PY - 2004

Y1 - 2004

N2 - The emission of a neutral exciton in a symmetric semiconductor quantum dot is split by the isotropic electron-hole exchange interaction into dark and bright states. We demonstrate that for a doubly charged exciton, there are also two states split by the electron-hole exchange, but both states are now bright. We also uncover a fine structure in the emission from the triply charged exciton, the singly and doubly charged biexcitons. By measuring these splittings we can access the isotropic exchange energies for holes in the ground and electrons ground and excited states. © 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

AB - The emission of a neutral exciton in a symmetric semiconductor quantum dot is split by the isotropic electron-hole exchange interaction into dark and bright states. We demonstrate that for a doubly charged exciton, there are also two states split by the electron-hole exchange, but both states are now bright. We also uncover a fine structure in the emission from the triply charged exciton, the singly and doubly charged biexcitons. By measuring these splittings we can access the isotropic exchange energies for holes in the ground and electrons ground and excited states. © 2004 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

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U2 - 10.1002/pssc.200304008

DO - 10.1002/pssc.200304008

M3 - Article

SN - 1610-1642

VL - 1

SP - 421

EP - 425

JO - Physica Status Solidi C - Current Topics in Solid State Physics

JF - Physica Status Solidi C - Current Topics in Solid State Physics

IS - 3

ER -

Fine structure of highly charged quantum dot excitons: Turning dark into bright states

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