Metal-enhanced upconversion luminescence tunable through metal nanoparticle-nanophosphor separation

Marjan Saboktakin; Xingchen Ye; Soong Ju Oh; Sung Hoon Hong; Aaron T. Fafarman; Uday K. Chettiar; Nader Engheta; Christopher B. Murray; Cherie R. Kagan

doi:10.1021/nn302466r

Metal-enhanced upconversion luminescence tunable through metal nanoparticle-nanophosphor separation

Marjan Saboktakin, Xingchen Ye, Soong Ju Oh, Sung Hoon Hong, Aaron T. Fafarman, Uday K. Chettiar, Nader Engheta, Christopher B. Murray, Cherie R. Kagan

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

269 Citations (Scopus)

Abstract

We have demonstrated amplification of luminescence in upconversion nanophosphors (UCNPs) of hexagonal phase NaYF ₄ (β-NaYF ₄) doped with the lanthanide dopants Yb ³⁺, Er ³⁺ or Yb ³⁺, Tm ³⁺ by close proximity to metal nanoparticles (NPs). We present a configuration in which close-packed monolayers of UCNPs are separated from a dense multilayer of metal NPs (Au or Ag) by a nanometer-scale oxide grown by atomic layer deposition. Luminescence enhancements were found to be dependent on the thickness of the oxide spacer layer and the type of metal NP with enhancements of up to 5.2-fold proximal to Au NPs and of up to 45-fold proximal to Ag NPs. Concomitant shortening of the UCNP luminescence decay time and rise time is indicative of the enhancement of the UCNP luminescence induced by resonant plasmonic coupling and nonresonant near-field enhancement from the metal NP layer, respectively.

Original language	English
Pages (from-to)	8758-8766
Number of pages	9
Journal	ACS nano
Volume	6
Issue number	10
DOIs	https://doi.org/10.1021/nn302466r
Publication status	Published - 2012 Oct 23
Externally published	Yes

Keywords

atomic layer deposition
lanthanide
metal-enhanced absorption
nanoimprint lithography
nanophosphor
plasmonically enhanced emission
upconversion

ASJC Scopus subject areas

General Materials Science
General Engineering
General Physics and Astronomy

Access to Document

10.1021/nn302466r

Cite this

@article{93775401b4344841a635f5be4af227b6,

title = "Metal-enhanced upconversion luminescence tunable through metal nanoparticle-nanophosphor separation",

abstract = "We have demonstrated amplification of luminescence in upconversion nanophosphors (UCNPs) of hexagonal phase NaYF 4 (β-NaYF 4) doped with the lanthanide dopants Yb 3+, Er 3+ or Yb 3+, Tm 3+ by close proximity to metal nanoparticles (NPs). We present a configuration in which close-packed monolayers of UCNPs are separated from a dense multilayer of metal NPs (Au or Ag) by a nanometer-scale oxide grown by atomic layer deposition. Luminescence enhancements were found to be dependent on the thickness of the oxide spacer layer and the type of metal NP with enhancements of up to 5.2-fold proximal to Au NPs and of up to 45-fold proximal to Ag NPs. Concomitant shortening of the UCNP luminescence decay time and rise time is indicative of the enhancement of the UCNP luminescence induced by resonant plasmonic coupling and nonresonant near-field enhancement from the metal NP layer, respectively.",

keywords = "atomic layer deposition, lanthanide, metal-enhanced absorption, nanoimprint lithography, nanophosphor, plasmonically enhanced emission, upconversion",

author = "Marjan Saboktakin and Xingchen Ye and Oh, {Soong Ju} and Hong, {Sung Hoon} and Fafarman, {Aaron T.} and Chettiar, {Uday K.} and Nader Engheta and Murray, {Christopher B.} and Kagan, {Cherie R.}",

year = "2012",

month = oct,

day = "23",

doi = "10.1021/nn302466r",

language = "English",

volume = "6",

pages = "8758--8766",

journal = "ACS nano",

issn = "1936-0851",

publisher = "American Chemical Society",

number = "10",

}

TY - JOUR

T1 - Metal-enhanced upconversion luminescence tunable through metal nanoparticle-nanophosphor separation

AU - Saboktakin, Marjan

AU - Ye, Xingchen

AU - Oh, Soong Ju

AU - Hong, Sung Hoon

AU - Fafarman, Aaron T.

AU - Chettiar, Uday K.

AU - Engheta, Nader

AU - Murray, Christopher B.

AU - Kagan, Cherie R.

PY - 2012/10/23

Y1 - 2012/10/23

N2 - We have demonstrated amplification of luminescence in upconversion nanophosphors (UCNPs) of hexagonal phase NaYF 4 (β-NaYF 4) doped with the lanthanide dopants Yb 3+, Er 3+ or Yb 3+, Tm 3+ by close proximity to metal nanoparticles (NPs). We present a configuration in which close-packed monolayers of UCNPs are separated from a dense multilayer of metal NPs (Au or Ag) by a nanometer-scale oxide grown by atomic layer deposition. Luminescence enhancements were found to be dependent on the thickness of the oxide spacer layer and the type of metal NP with enhancements of up to 5.2-fold proximal to Au NPs and of up to 45-fold proximal to Ag NPs. Concomitant shortening of the UCNP luminescence decay time and rise time is indicative of the enhancement of the UCNP luminescence induced by resonant plasmonic coupling and nonresonant near-field enhancement from the metal NP layer, respectively.

AB - We have demonstrated amplification of luminescence in upconversion nanophosphors (UCNPs) of hexagonal phase NaYF 4 (β-NaYF 4) doped with the lanthanide dopants Yb 3+, Er 3+ or Yb 3+, Tm 3+ by close proximity to metal nanoparticles (NPs). We present a configuration in which close-packed monolayers of UCNPs are separated from a dense multilayer of metal NPs (Au or Ag) by a nanometer-scale oxide grown by atomic layer deposition. Luminescence enhancements were found to be dependent on the thickness of the oxide spacer layer and the type of metal NP with enhancements of up to 5.2-fold proximal to Au NPs and of up to 45-fold proximal to Ag NPs. Concomitant shortening of the UCNP luminescence decay time and rise time is indicative of the enhancement of the UCNP luminescence induced by resonant plasmonic coupling and nonresonant near-field enhancement from the metal NP layer, respectively.

KW - atomic layer deposition

KW - lanthanide

KW - metal-enhanced absorption

KW - nanoimprint lithography

KW - nanophosphor

KW - plasmonically enhanced emission

KW - upconversion

UR - http://www.scopus.com/inward/record.url?scp=84867761324&partnerID=8YFLogxK

U2 - 10.1021/nn302466r

DO - 10.1021/nn302466r

M3 - Article

C2 - 22967489

AN - SCOPUS:84867761324

SN - 1936-0851

VL - 6

SP - 8758

EP - 8766

JO - ACS nano

JF - ACS nano

IS - 10

ER -

Metal-enhanced upconversion luminescence tunable through metal nanoparticle-nanophosphor separation

Abstract

Keywords

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this