Highly emissive nano rod-in-rod heterostructures with strong linear polarization

Amit Sitt; Asaf Salant; Gabi Menagen; Uri Banin

doi:10.1021/nl200519b

Highly emissive nano rod-in-rod heterostructures with strong linear polarization

Amit Sitt, Asaf Salant, Gabi Menagen, Uri Banin^*

^*Corresponding author for this work

Institute of Chemistry

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

195 Scopus citations

Abstract

We report the synthesis of CdSe/CdS rod in rod core/shell heterostructures. These rods, synthesized using a seeded-growth approach, show narrow distributions of rod diameters and lengths and exhibit high emission quantum efficiencies and highly polarized emission. The degree of polarization is controlled by the inner core rod dimensions, and it is equal or up to 1.5 times higher than the polarization of equivalent sphere in rod systems. Using the method of photoselection we measure the polarization anisotropy at different excitation wavelengths and study the interplay between electronic contribution and dielectric effects in determining the absorption and emission polarization.

Original language	English
Pages (from-to)	2054-2060
Number of pages	7
Journal	Nano Letters
Volume	11
Issue number	5
DOIs	https://doi.org/10.1021/nl200519b
State	Published - 11 May 2011

Keywords

Nanorods
fluorescence spectroscopy
heterostructures
polarization
seeded growth
synthesis

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10.1021/nl200519b

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title = "Highly emissive nano rod-in-rod heterostructures with strong linear polarization",

abstract = "We report the synthesis of CdSe/CdS rod in rod core/shell heterostructures. These rods, synthesized using a seeded-growth approach, show narrow distributions of rod diameters and lengths and exhibit high emission quantum efficiencies and highly polarized emission. The degree of polarization is controlled by the inner core rod dimensions, and it is equal or up to 1.5 times higher than the polarization of equivalent sphere in rod systems. Using the method of photoselection we measure the polarization anisotropy at different excitation wavelengths and study the interplay between electronic contribution and dielectric effects in determining the absorption and emission polarization.",

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AU - Sitt, Amit

AU - Salant, Asaf

AU - Menagen, Gabi

AU - Banin, Uri

PY - 2011/5/11

Y1 - 2011/5/11

N2 - We report the synthesis of CdSe/CdS rod in rod core/shell heterostructures. These rods, synthesized using a seeded-growth approach, show narrow distributions of rod diameters and lengths and exhibit high emission quantum efficiencies and highly polarized emission. The degree of polarization is controlled by the inner core rod dimensions, and it is equal or up to 1.5 times higher than the polarization of equivalent sphere in rod systems. Using the method of photoselection we measure the polarization anisotropy at different excitation wavelengths and study the interplay between electronic contribution and dielectric effects in determining the absorption and emission polarization.

AB - We report the synthesis of CdSe/CdS rod in rod core/shell heterostructures. These rods, synthesized using a seeded-growth approach, show narrow distributions of rod diameters and lengths and exhibit high emission quantum efficiencies and highly polarized emission. The degree of polarization is controlled by the inner core rod dimensions, and it is equal or up to 1.5 times higher than the polarization of equivalent sphere in rod systems. Using the method of photoselection we measure the polarization anisotropy at different excitation wavelengths and study the interplay between electronic contribution and dielectric effects in determining the absorption and emission polarization.

KW - Nanorods

KW - fluorescence spectroscopy

KW - heterostructures

KW - polarization

KW - seeded growth

KW - synthesis

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SP - 2054

EP - 2060

JO - Nano Letters

JF - Nano Letters

IS - 5

ER -

Highly emissive nano rod-in-rod heterostructures with strong linear polarization

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