Charged excitons in individual quantum dots: Effects of vertical electric fields and optical pump power

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

doi:10.1016/S1386-9477(02)00726-9

Charged excitons in individual quantum dots: Effects of vertical electric fields and optical pump power

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

School of Engineering & Physical Sciences

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

7 Citations (Scopus)

Abstract

We investigate the influence of optical pump power on a series of charging events of individual quantum dots embedded in a field effect structure. Increasing the optical pump powers moves all charging events towards more negative voltages and charged biexciton states in addition to single exciton states are observed. The linear shift in voltage with pump power is explained by the accumulation of photogenerated holes within the structure. © 2002 Elsevier Science B.V. All rights reserved.

Original language	English
Pages (from-to)	35-36
Number of pages	2
Journal	Physica E: Low-Dimensional Systems and Nanostructures
Volume	17
Issue number	1-4
DOIs	https://doi.org/10.1016/S1386-9477(02)00726-9
Publication status	Published - Apr 2003
Event	Proceedings pf the International Conference on Superlattices - Touluse, France Duration: 22 Jul 2002 → 26 Jul 2002

Keywords

Electric field
Excitons
Quantum dots

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10.1016/S1386-9477(02)00726-9

Cite this

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title = "Charged excitons in individual quantum dots: Effects of vertical electric fields and optical pump power",

abstract = "We investigate the influence of optical pump power on a series of charging events of individual quantum dots embedded in a field effect structure. Increasing the optical pump powers moves all charging events towards more negative voltages and charged biexciton states in addition to single exciton states are observed. The linear shift in voltage with pump power is explained by the accumulation of photogenerated holes within the structure. {\textcopyright} 2002 Elsevier Science B.V. All rights reserved.",

keywords = "Electric field, Excitons, Quantum dots",

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

year = "2003",

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doi = "10.1016/S1386-9477(02)00726-9",

language = "English",

volume = "17",

pages = "35--36",

journal = "Physica E: Low-Dimensional Systems and Nanostructures",

issn = "1386-9477",

publisher = "Elsevier",

number = "1-4",

note = "Proceedings pf the International Conference on Superlattices, ICSNN 2002 ; Conference date: 22-07-2002 Through 26-07-2002",

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TY - JOUR

T1 - Charged excitons in individual quantum dots

T2 - Proceedings pf the International Conference on Superlattices

AU - Urbaszek, B.

AU - McGhee, E. J.

AU - Smith, J. M.

AU - Warburton, R. J.

AU - Karrai, K.

AU - Gerardot, B. D.

AU - Garcia, J. M.

AU - Petroff, P. M.

PY - 2003/4

Y1 - 2003/4

N2 - We investigate the influence of optical pump power on a series of charging events of individual quantum dots embedded in a field effect structure. Increasing the optical pump powers moves all charging events towards more negative voltages and charged biexciton states in addition to single exciton states are observed. The linear shift in voltage with pump power is explained by the accumulation of photogenerated holes within the structure. © 2002 Elsevier Science B.V. All rights reserved.

AB - We investigate the influence of optical pump power on a series of charging events of individual quantum dots embedded in a field effect structure. Increasing the optical pump powers moves all charging events towards more negative voltages and charged biexciton states in addition to single exciton states are observed. The linear shift in voltage with pump power is explained by the accumulation of photogenerated holes within the structure. © 2002 Elsevier Science B.V. All rights reserved.

KW - Electric field

KW - Excitons

KW - Quantum dots

U2 - 10.1016/S1386-9477(02)00726-9

DO - 10.1016/S1386-9477(02)00726-9

M3 - Article

SN - 1386-9477

VL - 17

SP - 35

EP - 36

JO - Physica E: Low-Dimensional Systems and Nanostructures

JF - Physica E: Low-Dimensional Systems and Nanostructures

IS - 1-4

Y2 - 22 July 2002 through 26 July 2002

ER -

Charged excitons in individual quantum dots: Effects of vertical electric fields and optical pump power

Abstract

Keywords

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