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Analysing the photoluminescence intensities of single‐walled carbon nanotubes
Author(s) -
Heeg Sebastian,
Abrahamson Joel T.,
Strano Michael S.,
Reich Stephanie
Publication year - 2012
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.201200283
Subject(s) - photoluminescence , excited state , carbon nanotube , chirality (physics) , excitation , photoluminescence excitation , intensity (physics) , luminescence , materials science , absorption (acoustics) , exciton , carbon fibers , molecular physics , atomic physics , optoelectronics , nanotechnology , condensed matter physics , optics , chemistry , physics , quantum mechanics , chiral symmetry breaking , quark , composite number , nambu–jona lasinio model , composite material
We study the photoluminescence and photoluminescence excitation intensities of single‐walled carbon nanotubes. To derive the chirality fractions of semiconducting tubes from these optical methods requires a thorough analysis of the experimental parameters and the lifetimes of the excitonic states. We obtain the intensity distribution from the product of the widths of the first and second excitonic transition and the intensity of the absorption of the second excited state. Compared with previous analysis protocols our intensity distribution points towards a chirality abundance which is (i) narrower in diameter, (ii) centred at smaller diameters and (iii) more strongly dominated by armchair‐like tubes. We present a recipe for the fit of luminescence data.