Linearly polarized 'fine structure' of the bright exciton state in individual CdSe nanocrystal quantum dots

H. Htoon; M. Furis; S. A. Crooker; S. Jeong; V. I. Klimov

doi:10.1103/PhysRevB.77.035328

Linearly polarized 'fine structure' of the bright exciton state in individual CdSe nanocrystal quantum dots

H. Htoon
, M. Furis
, S. A. Crooker
, S. Jeong
, V. I. Klimov

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

57 Scopus citations

Abstract

We report polarization-resolved, low-temperature, high-spectral-resolution studies of the photoluminescence from individual CdSe nanocrystal quantum dots (NQDs). The spectra reveal a 'fine structure' splitting of the bright exciton state in a subset of the studied NQDs. The two fine structure states are spectrally separated by an energy of up to 3 meV depending on NQD size and are characterized by linearly (and orthogonally) polarized emission dipoles. The average splitting scales approximately with inverse NQD volume, consistent with an anisotropic electron-hole exchange interaction which can result from a breakdown of cylindrical symmetry in some of the NQDs.

Original language	English
Article number	035328
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	77
Issue number	3
DOIs	https://doi.org/10.1103/PhysRevB.77.035328
State	Published - 22 Jan 2008
Externally published	Yes

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title = "Linearly polarized 'fine structure' of the bright exciton state in individual CdSe nanocrystal quantum dots",

abstract = "We report polarization-resolved, low-temperature, high-spectral-resolution studies of the photoluminescence from individual CdSe nanocrystal quantum dots (NQDs). The spectra reveal a 'fine structure' splitting of the bright exciton state in a subset of the studied NQDs. The two fine structure states are spectrally separated by an energy of up to 3 meV depending on NQD size and are characterized by linearly (and orthogonally) polarized emission dipoles. The average splitting scales approximately with inverse NQD volume, consistent with an anisotropic electron-hole exchange interaction which can result from a breakdown of cylindrical symmetry in some of the NQDs.",

author = "H. Htoon and M. Furis and Crooker, \{S. A.\} and S. Jeong and Klimov, \{V. I.\}",

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doi = "10.1103/PhysRevB.77.035328",

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T1 - Linearly polarized 'fine structure' of the bright exciton state in individual CdSe nanocrystal quantum dots

AU - Htoon, H.

AU - Furis, M.

AU - Crooker, S. A.

AU - Jeong, S.

AU - Klimov, V. I.

PY - 2008/1/22

Y1 - 2008/1/22

N2 - We report polarization-resolved, low-temperature, high-spectral-resolution studies of the photoluminescence from individual CdSe nanocrystal quantum dots (NQDs). The spectra reveal a 'fine structure' splitting of the bright exciton state in a subset of the studied NQDs. The two fine structure states are spectrally separated by an energy of up to 3 meV depending on NQD size and are characterized by linearly (and orthogonally) polarized emission dipoles. The average splitting scales approximately with inverse NQD volume, consistent with an anisotropic electron-hole exchange interaction which can result from a breakdown of cylindrical symmetry in some of the NQDs.

AB - We report polarization-resolved, low-temperature, high-spectral-resolution studies of the photoluminescence from individual CdSe nanocrystal quantum dots (NQDs). The spectra reveal a 'fine structure' splitting of the bright exciton state in a subset of the studied NQDs. The two fine structure states are spectrally separated by an energy of up to 3 meV depending on NQD size and are characterized by linearly (and orthogonally) polarized emission dipoles. The average splitting scales approximately with inverse NQD volume, consistent with an anisotropic electron-hole exchange interaction which can result from a breakdown of cylindrical symmetry in some of the NQDs.

UR - https://www.scopus.com/pages/publications/38549136845

U2 - 10.1103/PhysRevB.77.035328

DO - 10.1103/PhysRevB.77.035328

M3 - Article

AN - SCOPUS:38549136845

SN - 1098-0121

VL - 77

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 3

M1 - 035328

ER -

Linearly polarized 'fine structure' of the bright exciton state in individual CdSe nanocrystal quantum dots

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