Optical phonon lifetimes in single-walled carbon nanotubes by time-resolved Raman scattering

Kwangu Kang; Taner Ozel; David G. Cahill; Moonsub Shim

doi:10.1021/nl802447a

Optical phonon lifetimes in single-walled carbon nanotubes by time-resolved Raman scattering

Kwangu Kang, Taner Ozel, David G. Cahill, Moonsub Shim

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

Abstract

The lifetimes of optical phonons (OPs) in single-walled carbon nanotubes are determined by time-resolved incoherent anti-Stokes Raman scattering using a subpicosecond pump-probe method. Lifetimes in semiconducting and metallic nanotubes at room temperature are similar, 1.2 and 0.9 ps, respectively. The OP lifetimes decrease with increasing temperature, approximately scaling as ∼1/T, consistent with anharmonic processes being the dominant decay mechanism for both semiconducting and metallic nanotubes.

Original language	English (US)
Pages (from-to)	4642-4647
Number of pages	6
Journal	Nano letters
Volume	8
Issue number	12
DOIs	https://doi.org/10.1021/nl802447a
State	Published - Dec 2008

ASJC Scopus subject areas

Bioengineering
General Chemistry
General Materials Science
Condensed Matter Physics
Mechanical Engineering

Online availability

10.1021/nl802447a

Library availability

Discover UIUC Full Text

Cite this

@article{8238dad15431475a9241b688e1f5fc1f,

title = "Optical phonon lifetimes in single-walled carbon nanotubes by time-resolved Raman scattering",

abstract = "The lifetimes of optical phonons (OPs) in single-walled carbon nanotubes are determined by time-resolved incoherent anti-Stokes Raman scattering using a subpicosecond pump-probe method. Lifetimes in semiconducting and metallic nanotubes at room temperature are similar, 1.2 and 0.9 ps, respectively. The OP lifetimes decrease with increasing temperature, approximately scaling as ∼1/T, consistent with anharmonic processes being the dominant decay mechanism for both semiconducting and metallic nanotubes.",

author = "Kwangu Kang and Taner Ozel and Cahill, {David G.} and Moonsub Shim",

year = "2008",

month = dec,

doi = "10.1021/nl802447a",

language = "English (US)",

volume = "8",

pages = "4642--4647",

journal = "Nano letters",

issn = "1530-6984",

publisher = "American Chemical Society",

number = "12",

}

TY - JOUR

T1 - Optical phonon lifetimes in single-walled carbon nanotubes by time-resolved Raman scattering

AU - Kang, Kwangu

AU - Ozel, Taner

AU - Cahill, David G.

AU - Shim, Moonsub

PY - 2008/12

Y1 - 2008/12

N2 - The lifetimes of optical phonons (OPs) in single-walled carbon nanotubes are determined by time-resolved incoherent anti-Stokes Raman scattering using a subpicosecond pump-probe method. Lifetimes in semiconducting and metallic nanotubes at room temperature are similar, 1.2 and 0.9 ps, respectively. The OP lifetimes decrease with increasing temperature, approximately scaling as ∼1/T, consistent with anharmonic processes being the dominant decay mechanism for both semiconducting and metallic nanotubes.

AB - The lifetimes of optical phonons (OPs) in single-walled carbon nanotubes are determined by time-resolved incoherent anti-Stokes Raman scattering using a subpicosecond pump-probe method. Lifetimes in semiconducting and metallic nanotubes at room temperature are similar, 1.2 and 0.9 ps, respectively. The OP lifetimes decrease with increasing temperature, approximately scaling as ∼1/T, consistent with anharmonic processes being the dominant decay mechanism for both semiconducting and metallic nanotubes.

UR - http://www.scopus.com/inward/record.url?scp=61649085871&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=61649085871&partnerID=8YFLogxK

U2 - 10.1021/nl802447a

DO - 10.1021/nl802447a

M3 - Article

C2 - 19367808

AN - SCOPUS:61649085871

SN - 1530-6984

VL - 8

SP - 4642

EP - 4647

JO - Nano letters

JF - Nano letters

IS - 12

ER -

Optical phonon lifetimes in single-walled carbon nanotubes by time-resolved Raman scattering

Abstract

ASJC Scopus subject areas

Online availability

Library availability

Related links

Fingerprint

Cite this