Femtosecond spectroscopy of optical excitations in single-walled carbon nanotubes: evidence for exciton-exciton annihilation.
作者： Ying-Zhong Ma , Leonas Valkunas , Susan L. Dexheimer , Sergei M. Bachilo , Graham R. Fleming
DOI: 10.1103/PHYSREVLETT.94.157402
关键词:
摘要: Frequency-resolved femtosecond transient absorption spectra and kinetics measured by optical excitation of the second first electronic transitions (8,3) single-walled carbon nanotube species reveal a unique mutual response between these transitions. Based on analysis spectra, kinetics, their distinct amplitude dependence pump intensity observed at transitions, we conclude that observations originate from both excitonic origin spectrum nonlinear exciton annihilation.
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