Exciton binding energy in semiconducting single-walled carbon nanotubes

Ying Zhong Ma; Leonas Valkunas; Sergei M. Bachilo; Graham R. Fleming

doi:10.1021/jp053011t

Exciton binding energy in semiconducting single-walled carbon nanotubes

Ying Zhong Ma, Leonas Valkunas, Sergei M. Bachilo, Graham R. Fleming

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

102 Scopus citations

Abstract

The exciton binding energy serves as a critical criterion for identification of the nature of elementary excitations (neutral excitons versus a pair of charged carriers) in semiconductor materials. An exciton binding energy of 0.41 eV is determined experimentally for a selected nanotube type, the (8,3) tube, confirming the excitonic nature of the elementary excitations. This determination is made from the energy difference between an electron-hole continuum and its precursor exciton. The electron-hole continuum results from dissociation of excitons following extremely rapid exciton-exciton annihilation and possibly also ultrafast relaxation from the second to the first exciton states and is characterized by distinct spectroscopic and dynamic signatures.

Original language	English
Pages (from-to)	15671-15674
Number of pages	4
Journal	Journal of Physical Chemistry B
Volume	109
Issue number	33
DOIs	https://doi.org/10.1021/jp053011t
State	Published - Aug 25 2005
Externally published	Yes

Access to Document

10.1021/jp053011t

Cite this

@article{4271e58f1d154fadbf766f4022b65f4b,

title = "Exciton binding energy in semiconducting single-walled carbon nanotubes",

abstract = "The exciton binding energy serves as a critical criterion for identification of the nature of elementary excitations (neutral excitons versus a pair of charged carriers) in semiconductor materials. An exciton binding energy of 0.41 eV is determined experimentally for a selected nanotube type, the (8,3) tube, confirming the excitonic nature of the elementary excitations. This determination is made from the energy difference between an electron-hole continuum and its precursor exciton. The electron-hole continuum results from dissociation of excitons following extremely rapid exciton-exciton annihilation and possibly also ultrafast relaxation from the second to the first exciton states and is characterized by distinct spectroscopic and dynamic signatures.",

author = "Ma, {Ying Zhong} and Leonas Valkunas and Bachilo, {Sergei M.} and Fleming, {Graham R.}",

year = "2005",

month = aug,

day = "25",

doi = "10.1021/jp053011t",

language = "English",

volume = "109",

pages = "15671--15674",

journal = "Journal of Physical Chemistry B",

issn = "1520-6106",

publisher = "American Chemical Society",

number = "33",

}

TY - JOUR

T1 - Exciton binding energy in semiconducting single-walled carbon nanotubes

AU - Ma, Ying Zhong

AU - Valkunas, Leonas

AU - Bachilo, Sergei M.

AU - Fleming, Graham R.

PY - 2005/8/25

Y1 - 2005/8/25

N2 - The exciton binding energy serves as a critical criterion for identification of the nature of elementary excitations (neutral excitons versus a pair of charged carriers) in semiconductor materials. An exciton binding energy of 0.41 eV is determined experimentally for a selected nanotube type, the (8,3) tube, confirming the excitonic nature of the elementary excitations. This determination is made from the energy difference between an electron-hole continuum and its precursor exciton. The electron-hole continuum results from dissociation of excitons following extremely rapid exciton-exciton annihilation and possibly also ultrafast relaxation from the second to the first exciton states and is characterized by distinct spectroscopic and dynamic signatures.

AB - The exciton binding energy serves as a critical criterion for identification of the nature of elementary excitations (neutral excitons versus a pair of charged carriers) in semiconductor materials. An exciton binding energy of 0.41 eV is determined experimentally for a selected nanotube type, the (8,3) tube, confirming the excitonic nature of the elementary excitations. This determination is made from the energy difference between an electron-hole continuum and its precursor exciton. The electron-hole continuum results from dissociation of excitons following extremely rapid exciton-exciton annihilation and possibly also ultrafast relaxation from the second to the first exciton states and is characterized by distinct spectroscopic and dynamic signatures.

UR - http://www.scopus.com/inward/record.url?scp=24944509569&partnerID=8YFLogxK

U2 - 10.1021/jp053011t

DO - 10.1021/jp053011t

M3 - Article

AN - SCOPUS:24944509569

SN - 1520-6106

VL - 109

SP - 15671

EP - 15674

JO - Journal of Physical Chemistry B

JF - Journal of Physical Chemistry B

IS - 33

ER -

Exciton binding energy in semiconducting single-walled carbon nanotubes

Abstract

Access to Document

Other files and links

Fingerprint

Cite this