Enhanced radiative emission rate and quantum efficiency in coupled silicon nanocrystal-nanostructured gold emitters

Julie S. Biteen; Domenico Pacifici; Nathan S. Lewis; Harry A. Atwater

doi:10.1021/nl051207z

Enhanced radiative emission rate and quantum efficiency in coupled silicon nanocrystal-nanostructured gold emitters

Julie S. Biteen, Domenico Pacifici, Nathan S. Lewis, Harry A. Atwater

California Institute of Technology

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

213 Citations (Scopus)

Abstract

We report local-field-enhanced light emission from silicon nanocrystals close to a film of nanoporous gold. We resolve photoluminescence as the gold-Si nanocrystal separation distance is varied between 0 and 20 nm and observe a fourfold luminescence intensity enhancement concomitant with increases in the coupled silicon nanocrystal/nanoporous gold absorbance cross section and radiative decay rate. A detailed analysis of the luminescence data indicated a local-field-enhanced quantum efficiency of 58% for the Si nanocrystals coupled to the nanoporous gold layer.

Original language	English
Pages (from-to)	1768-1773
Number of pages	6
Journal	Nano letters
Volume	5
Issue number	9
DOIs	https://doi.org/10.1021/nl051207z
Publication status	Published - Sep 1 2005

ASJC Scopus subject areas

Bioengineering
Chemistry(all)
Materials Science(all)
Condensed Matter Physics
Mechanical Engineering

Access to Document

10.1021/nl051207z

Fingerprint Dive into the research topics of 'Enhanced radiative emission rate and quantum efficiency in coupled silicon nanocrystal-nanostructured gold emitters'. Together they form a unique fingerprint.

Cite this

@article{3af4ad62bac642e0adc4c6c0d12279f2,

title = "Enhanced radiative emission rate and quantum efficiency in coupled silicon nanocrystal-nanostructured gold emitters",

abstract = "We report local-field-enhanced light emission from silicon nanocrystals close to a film of nanoporous gold. We resolve photoluminescence as the gold-Si nanocrystal separation distance is varied between 0 and 20 nm and observe a fourfold luminescence intensity enhancement concomitant with increases in the coupled silicon nanocrystal/nanoporous gold absorbance cross section and radiative decay rate. A detailed analysis of the luminescence data indicated a local-field-enhanced quantum efficiency of 58% for the Si nanocrystals coupled to the nanoporous gold layer.",

author = "Biteen, {Julie S.} and Domenico Pacifici and Lewis, {Nathan S.} and Atwater, {Harry A.}",

year = "2005",

month = sep,

day = "1",

doi = "10.1021/nl051207z",

language = "English",

volume = "5",

pages = "1768--1773",

journal = "Nano Letters",

issn = "1530-6984",

publisher = "American Chemical Society",

number = "9",

}

TY - JOUR

T1 - Enhanced radiative emission rate and quantum efficiency in coupled silicon nanocrystal-nanostructured gold emitters

AU - Biteen, Julie S.

AU - Pacifici, Domenico

AU - Lewis, Nathan S.

AU - Atwater, Harry A.

PY - 2005/9/1

Y1 - 2005/9/1

N2 - We report local-field-enhanced light emission from silicon nanocrystals close to a film of nanoporous gold. We resolve photoluminescence as the gold-Si nanocrystal separation distance is varied between 0 and 20 nm and observe a fourfold luminescence intensity enhancement concomitant with increases in the coupled silicon nanocrystal/nanoporous gold absorbance cross section and radiative decay rate. A detailed analysis of the luminescence data indicated a local-field-enhanced quantum efficiency of 58% for the Si nanocrystals coupled to the nanoporous gold layer.

AB - We report local-field-enhanced light emission from silicon nanocrystals close to a film of nanoporous gold. We resolve photoluminescence as the gold-Si nanocrystal separation distance is varied between 0 and 20 nm and observe a fourfold luminescence intensity enhancement concomitant with increases in the coupled silicon nanocrystal/nanoporous gold absorbance cross section and radiative decay rate. A detailed analysis of the luminescence data indicated a local-field-enhanced quantum efficiency of 58% for the Si nanocrystals coupled to the nanoporous gold layer.

UR - http://www.scopus.com/inward/record.url?scp=25844528046&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=25844528046&partnerID=8YFLogxK

U2 - 10.1021/nl051207z

DO - 10.1021/nl051207z

M3 - Article

C2 - 16159221

AN - SCOPUS:25844528046

VL - 5

SP - 1768

EP - 1773

JO - Nano Letters

JF - Nano Letters

SN - 1530-6984

IS - 9

ER -