Anisotropic optical emission of single CdSe/CdS tetrapod heterostructures

evidence for a wavefunction symmetry breaking

C. Mauser, T. Limmer, E. Da Como, K. Becker, A. Rogach, J. Feldmann, D. Talapin

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

Semiconductor tetrapods are expected to exhibit isotropic optical properties due to their tetrahedral symmetry. We have investigated the optical polarization properties of individual CdSe∕CdS tetrapods of high structural quality. In contrast to the light absorption behavior, a pronounced anisotropy is observed in the optical emission. This unexpected result can only be explained by assuming a symmetry breaking in the electronic wavefunction. Calculations reveal that slight differences between the arm diameters induce the polarized emission and a decrease in the photoluminescence intensity.
Original languageEnglish
Pages (from-to)153303-153307
JournalPhysical Review B
Volume77
Issue number15
DOIs
Publication statusPublished - 2008

Fingerprint

optical polarization
Crystal symmetry
Light polarization
Wave functions
electromagnetic absorption
Light absorption
light emission
Heterojunctions
broken symmetry
Photoluminescence
Anisotropy
Optical properties
Semiconductor materials
photoluminescence
optical properties
anisotropy
symmetry
electronics

Cite this

Anisotropic optical emission of single CdSe/CdS tetrapod heterostructures : evidence for a wavefunction symmetry breaking. / Mauser, C.; Limmer, T.; Da Como, E.; Becker, K.; Rogach, A.; Feldmann, J.; Talapin, D.

In: Physical Review B, Vol. 77, No. 15, 2008, p. 153303-153307.

Research output: Contribution to journalArticle

Mauser, C. ; Limmer, T. ; Da Como, E. ; Becker, K. ; Rogach, A. ; Feldmann, J. ; Talapin, D. / Anisotropic optical emission of single CdSe/CdS tetrapod heterostructures : evidence for a wavefunction symmetry breaking. In: Physical Review B. 2008 ; Vol. 77, No. 15. pp. 153303-153307.
@article{e0c267bb295e4181814035c013770f9b,
title = "Anisotropic optical emission of single CdSe/CdS tetrapod heterostructures: evidence for a wavefunction symmetry breaking",
abstract = "Semiconductor tetrapods are expected to exhibit isotropic optical properties due to their tetrahedral symmetry. We have investigated the optical polarization properties of individual CdSe∕CdS tetrapods of high structural quality. In contrast to the light absorption behavior, a pronounced anisotropy is observed in the optical emission. This unexpected result can only be explained by assuming a symmetry breaking in the electronic wavefunction. Calculations reveal that slight differences between the arm diameters induce the polarized emission and a decrease in the photoluminescence intensity.",
author = "C. Mauser and T. Limmer and {Da Como}, E. and K. Becker and A. Rogach and J. Feldmann and D. Talapin",
year = "2008",
doi = "10.1103/PhysRevB.77.153303",
language = "English",
volume = "77",
pages = "153303--153307",
journal = "Physical Review B : Condensed Matter and Materials Physics",
issn = "1098-0121",
publisher = "American Physical Society",
number = "15",

}

TY - JOUR

T1 - Anisotropic optical emission of single CdSe/CdS tetrapod heterostructures

T2 - evidence for a wavefunction symmetry breaking

AU - Mauser, C.

AU - Limmer, T.

AU - Da Como, E.

AU - Becker, K.

AU - Rogach, A.

AU - Feldmann, J.

AU - Talapin, D.

PY - 2008

Y1 - 2008

N2 - Semiconductor tetrapods are expected to exhibit isotropic optical properties due to their tetrahedral symmetry. We have investigated the optical polarization properties of individual CdSe∕CdS tetrapods of high structural quality. In contrast to the light absorption behavior, a pronounced anisotropy is observed in the optical emission. This unexpected result can only be explained by assuming a symmetry breaking in the electronic wavefunction. Calculations reveal that slight differences between the arm diameters induce the polarized emission and a decrease in the photoluminescence intensity.

AB - Semiconductor tetrapods are expected to exhibit isotropic optical properties due to their tetrahedral symmetry. We have investigated the optical polarization properties of individual CdSe∕CdS tetrapods of high structural quality. In contrast to the light absorption behavior, a pronounced anisotropy is observed in the optical emission. This unexpected result can only be explained by assuming a symmetry breaking in the electronic wavefunction. Calculations reveal that slight differences between the arm diameters induce the polarized emission and a decrease in the photoluminescence intensity.

UR - http://www.scopus.com/inward/record.url?scp=42149115705&partnerID=8YFLogxK

UR - http://dx.doi.org/10.1103/PhysRevB.77.153303

U2 - 10.1103/PhysRevB.77.153303

DO - 10.1103/PhysRevB.77.153303

M3 - Article

VL - 77

SP - 153303

EP - 153307

JO - Physical Review B : Condensed Matter and Materials Physics

JF - Physical Review B : Condensed Matter and Materials Physics

SN - 1098-0121

IS - 15

ER -