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Title: Temperature Behavior of the Photoluminescence Decay of Semiconducting Carbon Nanotubes: The Effective Lifetime

Abstract

The temperature dependence of the photoluminescence decay of excitons in single-walled carbon nanotubes was measured for two nanotube species, (7,6) and (7,5), representative of the two nanotube (n-m)mod 3 families. A monotonic increase of the photoluminescence lifetime with decreasing temperature is observed. The external strain induced by lowering the temperature below the freezing point of the solution leads to an overall lowering of the photoluminescence lifetime. This effect indicates that the measured lifetime is defined by the intrinsic electronic properties of carbon nanotubes and could be understood as an exchange interaction between bright and dark excitonic states. We find the lifetime to vary between 223 and 319 ps between 290 and 5 K, obtained by a multiexponential fit, well in agreement with previous experiments.

Authors:
; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
939300
DOE Contract Number:  
AC36-99-GO10337
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics; Journal Volume: 75; Journal Issue: 11, 2007; Related Information: Article No. 113409
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; 77 NANOSCIENCE AND NANOTECHNOLOGY; CARBON; DECAY; EXCHANGE INTERACTIONS; EXCITONS; LIFETIME; MELTING POINTS; NANOTUBES; PHOTOLUMINESCENCE; STRAINS; TEMPERATURE DEPENDENCE; Basic Sciences; Solid State Spectroscopy

Citation Formats

Karaiskaj, D., Mascarenhas, A., Choi, J. H., Graff, R., and Strano, M. S. Temperature Behavior of the Photoluminescence Decay of Semiconducting Carbon Nanotubes: The Effective Lifetime. United States: N. p., 2007. Web. doi:10.1103/PhysRevB.75.113409.
Karaiskaj, D., Mascarenhas, A., Choi, J. H., Graff, R., & Strano, M. S. Temperature Behavior of the Photoluminescence Decay of Semiconducting Carbon Nanotubes: The Effective Lifetime. United States. doi:10.1103/PhysRevB.75.113409.
Karaiskaj, D., Mascarenhas, A., Choi, J. H., Graff, R., and Strano, M. S. Mon . "Temperature Behavior of the Photoluminescence Decay of Semiconducting Carbon Nanotubes: The Effective Lifetime". United States. doi:10.1103/PhysRevB.75.113409.
@article{osti_939300,
title = {Temperature Behavior of the Photoluminescence Decay of Semiconducting Carbon Nanotubes: The Effective Lifetime},
author = {Karaiskaj, D. and Mascarenhas, A. and Choi, J. H. and Graff, R. and Strano, M. S.},
abstractNote = {The temperature dependence of the photoluminescence decay of excitons in single-walled carbon nanotubes was measured for two nanotube species, (7,6) and (7,5), representative of the two nanotube (n-m)mod 3 families. A monotonic increase of the photoluminescence lifetime with decreasing temperature is observed. The external strain induced by lowering the temperature below the freezing point of the solution leads to an overall lowering of the photoluminescence lifetime. This effect indicates that the measured lifetime is defined by the intrinsic electronic properties of carbon nanotubes and could be understood as an exchange interaction between bright and dark excitonic states. We find the lifetime to vary between 223 and 319 ps between 290 and 5 K, obtained by a multiexponential fit, well in agreement with previous experiments.},
doi = {10.1103/PhysRevB.75.113409},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 11, 2007,
volume = 75,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}