Plasmon-enhanced upconversion luminescence in single nanophosphor-nanorod heterodimers formed through template-assisted self-assembly

Nicholas J. Greybush; Marjan Saboktakin; Xingchen Ye; Cristian Della Giovampaola; Soong Ju Oh; Nathaniel E. Berry; Nader Engheta; Christopher B. Murray; Cherie R. Kagan

doi:10.1021/nn503675a

Plasmon-enhanced upconversion luminescence in single nanophosphor-nanorod heterodimers formed through template-assisted self-assembly

Nicholas J. Greybush, Marjan Saboktakin, Xingchen Ye, Cristian Della Giovampaola, Soong Ju Oh, Nathaniel E. Berry, Nader Engheta, Christopher B. Murray, Cherie R. Kagan

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

138 Citations (Scopus)

Abstract

We demonstrate plasmonic enhancement of upconversion luminescence in individual nanocrystal heterodimers formed by template-assisted self-assembly. Lithographically defined, shape-selective templates were used to deterministically coassemble single Au nanorods in proximity to single hexagonal (β-phase) NaYF₄:Yb³⁺,Er³⁺ upconversion nanophosphors. By tailoring the dimensions of the rods to spectrally tune their longitudinal surface plasmon resonance to match the 977 nm excitation wavelength of the phosphors and by spatially localizing the phosphors in the intense near-fields surrounding the rod tips, several-fold luminescence enhancements were achieved. The enhancement effects exhibited a strong dependence on the excitation lights polarization relative to the rod axis. In addition, greater enhancement was observed at lower excitation power densities due to the nonlinear behavior of the upconversion process. The template-based coassembly scheme utilized here for plasmonic coupling offers a versatile platform for improving our understanding of optical interactions among individual chemically prepared nanocrystal components.

Original language	English
Pages (from-to)	9482-9491
Number of pages	10
Journal	ACS nano
Volume	8
Issue number	9
DOIs	https://doi.org/10.1021/nn503675a
Publication status	Published - 2014 Sept 23
Externally published	Yes

Keywords

gold nanorod
plasmon-enhanced luminescence
polarization dependence
single particle
template-assisted self-assembly
upconversion nanocrystals

ASJC Scopus subject areas

General Materials Science
General Engineering
General Physics and Astronomy

Access to Document

10.1021/nn503675a

Cite this

@article{b8821e7584824402be1c0335947e68aa,

title = "Plasmon-enhanced upconversion luminescence in single nanophosphor-nanorod heterodimers formed through template-assisted self-assembly",

abstract = "We demonstrate plasmonic enhancement of upconversion luminescence in individual nanocrystal heterodimers formed by template-assisted self-assembly. Lithographically defined, shape-selective templates were used to deterministically coassemble single Au nanorods in proximity to single hexagonal (β-phase) NaYF4:Yb3+,Er3+ upconversion nanophosphors. By tailoring the dimensions of the rods to spectrally tune their longitudinal surface plasmon resonance to match the 977 nm excitation wavelength of the phosphors and by spatially localizing the phosphors in the intense near-fields surrounding the rod tips, several-fold luminescence enhancements were achieved. The enhancement effects exhibited a strong dependence on the excitation lights polarization relative to the rod axis. In addition, greater enhancement was observed at lower excitation power densities due to the nonlinear behavior of the upconversion process. The template-based coassembly scheme utilized here for plasmonic coupling offers a versatile platform for improving our understanding of optical interactions among individual chemically prepared nanocrystal components.",

keywords = "gold nanorod, plasmon-enhanced luminescence, polarization dependence, single particle, template-assisted self-assembly, upconversion nanocrystals",

author = "Greybush, {Nicholas J.} and Marjan Saboktakin and Xingchen Ye and {Della Giovampaola}, Cristian and Oh, {Soong Ju} and Berry, {Nathaniel E.} and Nader Engheta and Murray, {Christopher B.} and Kagan, {Cherie R.}",

year = "2014",

month = sep,

day = "23",

doi = "10.1021/nn503675a",

language = "English",

volume = "8",

pages = "9482--9491",

journal = "ACS nano",

issn = "1936-0851",

publisher = "American Chemical Society",

number = "9",

}

TY - JOUR

T1 - Plasmon-enhanced upconversion luminescence in single nanophosphor-nanorod heterodimers formed through template-assisted self-assembly

AU - Greybush, Nicholas J.

AU - Saboktakin, Marjan

AU - Ye, Xingchen

AU - Della Giovampaola, Cristian

AU - Oh, Soong Ju

AU - Berry, Nathaniel E.

AU - Engheta, Nader

AU - Murray, Christopher B.

AU - Kagan, Cherie R.

PY - 2014/9/23

Y1 - 2014/9/23

N2 - We demonstrate plasmonic enhancement of upconversion luminescence in individual nanocrystal heterodimers formed by template-assisted self-assembly. Lithographically defined, shape-selective templates were used to deterministically coassemble single Au nanorods in proximity to single hexagonal (β-phase) NaYF4:Yb3+,Er3+ upconversion nanophosphors. By tailoring the dimensions of the rods to spectrally tune their longitudinal surface plasmon resonance to match the 977 nm excitation wavelength of the phosphors and by spatially localizing the phosphors in the intense near-fields surrounding the rod tips, several-fold luminescence enhancements were achieved. The enhancement effects exhibited a strong dependence on the excitation lights polarization relative to the rod axis. In addition, greater enhancement was observed at lower excitation power densities due to the nonlinear behavior of the upconversion process. The template-based coassembly scheme utilized here for plasmonic coupling offers a versatile platform for improving our understanding of optical interactions among individual chemically prepared nanocrystal components.

AB - We demonstrate plasmonic enhancement of upconversion luminescence in individual nanocrystal heterodimers formed by template-assisted self-assembly. Lithographically defined, shape-selective templates were used to deterministically coassemble single Au nanorods in proximity to single hexagonal (β-phase) NaYF4:Yb3+,Er3+ upconversion nanophosphors. By tailoring the dimensions of the rods to spectrally tune their longitudinal surface plasmon resonance to match the 977 nm excitation wavelength of the phosphors and by spatially localizing the phosphors in the intense near-fields surrounding the rod tips, several-fold luminescence enhancements were achieved. The enhancement effects exhibited a strong dependence on the excitation lights polarization relative to the rod axis. In addition, greater enhancement was observed at lower excitation power densities due to the nonlinear behavior of the upconversion process. The template-based coassembly scheme utilized here for plasmonic coupling offers a versatile platform for improving our understanding of optical interactions among individual chemically prepared nanocrystal components.

KW - gold nanorod

KW - plasmon-enhanced luminescence

KW - polarization dependence

KW - single particle

KW - template-assisted self-assembly

KW - upconversion nanocrystals

UR - http://www.scopus.com/inward/record.url?scp=84912548464&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84912548464&partnerID=8YFLogxK

U2 - 10.1021/nn503675a

DO - 10.1021/nn503675a

M3 - Article

C2 - 25182662

AN - SCOPUS:84912548464

SN - 1936-0851

VL - 8

SP - 9482

EP - 9491

JO - ACS nano

JF - ACS nano

IS - 9

ER -

Plasmon-enhanced upconversion luminescence in single nanophosphor-nanorod heterodimers formed through template-assisted self-assembly

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this