Circularly polarized emission from colloidal nanocrystal quantum dots confined in microcavities formed by chiral mirrors

Fan Zhang; Jian Xu; Akhlesh Lakhtakia; Sean M. Pursel; Mark W. Horn; Andrew Wang

doi:10.1063/1.2751129

Circularly polarized emission from colloidal nanocrystal quantum dots confined in microcavities formed by chiral mirrors

Fan Zhang, Jian Xu, Akhlesh Lakhtakia, Sean M. Pursel, Mark W. Horn, Andrew Wang

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

22 Scopus citations

Abstract

Colloidal semiconductor nanocrystal quantum dots (NQDs) confined in a microcavity device emit resonance-enhanced, circularly polarized (CP) light, when the device consists of a pair of chiral sculptured-thin-film mirrors separated by layers of emissive nanocrystals and spacers that form a λ2 -resonant cavity. The resonant emission from the NQDs within the microcavity is strongly directed normally to the mirror surfaces. It is speculated that the enhanced coupling between the NQD excitons and the confined electromagnetic field resulted in the observed CP emission from the embedded NQDs with significant improvements in the light output's directionality and color purity.

Original language	English (US)
Article number	023102
Journal	Applied Physics Letters
Volume	91
Issue number	2
DOIs	https://doi.org/10.1063/1.2751129
State	Published - 2007

All Science Journal Classification (ASJC) codes

Physics and Astronomy (miscellaneous)

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10.1063/1.2751129

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@article{455054393956483f9d08447a3fc162bb,

title = "Circularly polarized emission from colloidal nanocrystal quantum dots confined in microcavities formed by chiral mirrors",

abstract = "Colloidal semiconductor nanocrystal quantum dots (NQDs) confined in a microcavity device emit resonance-enhanced, circularly polarized (CP) light, when the device consists of a pair of chiral sculptured-thin-film mirrors separated by layers of emissive nanocrystals and spacers that form a λ2 -resonant cavity. The resonant emission from the NQDs within the microcavity is strongly directed normally to the mirror surfaces. It is speculated that the enhanced coupling between the NQD excitons and the confined electromagnetic field resulted in the observed CP emission from the embedded NQDs with significant improvements in the light output's directionality and color purity.",

author = "Fan Zhang and Jian Xu and Akhlesh Lakhtakia and Pursel, {Sean M.} and Horn, {Mark W.} and Andrew Wang",

note = "Funding Information: The authors thank Zetian Mi (University of Michigan) for helpful discussions on the radiative lifetime of quantum dots and Ben S. Xu (Penn State) for technical assistance with TEM imaging of nanocrystals. This work was supported by the U. S. Army Research Office under Contract No. DAAD19-02-D-0001 and the U. S. National Science Foundation under Grant No. DMR-0213623.",

year = "2007",

doi = "10.1063/1.2751129",

language = "English (US)",

volume = "91",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "American Institute of Physics Publising LLC",

number = "2",

}

TY - JOUR

T1 - Circularly polarized emission from colloidal nanocrystal quantum dots confined in microcavities formed by chiral mirrors

AU - Zhang, Fan

AU - Xu, Jian

AU - Lakhtakia, Akhlesh

AU - Pursel, Sean M.

AU - Horn, Mark W.

AU - Wang, Andrew

N1 - Funding Information: The authors thank Zetian Mi (University of Michigan) for helpful discussions on the radiative lifetime of quantum dots and Ben S. Xu (Penn State) for technical assistance with TEM imaging of nanocrystals. This work was supported by the U. S. Army Research Office under Contract No. DAAD19-02-D-0001 and the U. S. National Science Foundation under Grant No. DMR-0213623.

PY - 2007

Y1 - 2007

N2 - Colloidal semiconductor nanocrystal quantum dots (NQDs) confined in a microcavity device emit resonance-enhanced, circularly polarized (CP) light, when the device consists of a pair of chiral sculptured-thin-film mirrors separated by layers of emissive nanocrystals and spacers that form a λ2 -resonant cavity. The resonant emission from the NQDs within the microcavity is strongly directed normally to the mirror surfaces. It is speculated that the enhanced coupling between the NQD excitons and the confined electromagnetic field resulted in the observed CP emission from the embedded NQDs with significant improvements in the light output's directionality and color purity.

AB - Colloidal semiconductor nanocrystal quantum dots (NQDs) confined in a microcavity device emit resonance-enhanced, circularly polarized (CP) light, when the device consists of a pair of chiral sculptured-thin-film mirrors separated by layers of emissive nanocrystals and spacers that form a λ2 -resonant cavity. The resonant emission from the NQDs within the microcavity is strongly directed normally to the mirror surfaces. It is speculated that the enhanced coupling between the NQD excitons and the confined electromagnetic field resulted in the observed CP emission from the embedded NQDs with significant improvements in the light output's directionality and color purity.

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VL - 91

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 2

M1 - 023102

ER -

Circularly polarized emission from colloidal nanocrystal quantum dots confined in microcavities formed by chiral mirrors

Abstract

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