|
1
|
Schneck JR, Walsh AG, Green AA, Hersam MC, Ziegler LD, Swan AK. Electron Correlation Effects on the Femtosecond Dephasing Dynamics of E22 Excitons in (6,5) Carbon Nanotubes. J Phys Chem A 2011; 115:3917-23. [DOI: 10.1021/jp108345t] [Citation(s) in RCA: 14] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Affiliation(s)
- J. R. Schneck
- Department of Chemistry and ‡Department of Physics, 590 Commonwealth Avenue, Boston University, Boston, Massachusetts 02215, United States
- The Photonics Center and ∥Department of Electrical and Computer Engineering, 8 Saint Mary’s Street, Boston University, Boston, Massachusetts 02215, United States
- Department of Material Science and Engineering and #Department of Chemistry, 2220 Campus Drive, Northwestern University, Evanston, Illinois 60208, United States
| | - A. G. Walsh
- Department of Chemistry and ‡Department of Physics, 590 Commonwealth Avenue, Boston University, Boston, Massachusetts 02215, United States
- The Photonics Center and ∥Department of Electrical and Computer Engineering, 8 Saint Mary’s Street, Boston University, Boston, Massachusetts 02215, United States
- Department of Material Science and Engineering and #Department of Chemistry, 2220 Campus Drive, Northwestern University, Evanston, Illinois 60208, United States
| | - A. A. Green
- Department of Chemistry and ‡Department of Physics, 590 Commonwealth Avenue, Boston University, Boston, Massachusetts 02215, United States
- The Photonics Center and ∥Department of Electrical and Computer Engineering, 8 Saint Mary’s Street, Boston University, Boston, Massachusetts 02215, United States
- Department of Material Science and Engineering and #Department of Chemistry, 2220 Campus Drive, Northwestern University, Evanston, Illinois 60208, United States
| | - M. C. Hersam
- Department of Chemistry and ‡Department of Physics, 590 Commonwealth Avenue, Boston University, Boston, Massachusetts 02215, United States
- The Photonics Center and ∥Department of Electrical and Computer Engineering, 8 Saint Mary’s Street, Boston University, Boston, Massachusetts 02215, United States
- Department of Material Science and Engineering and #Department of Chemistry, 2220 Campus Drive, Northwestern University, Evanston, Illinois 60208, United States
| | - L. D. Ziegler
- Department of Chemistry and ‡Department of Physics, 590 Commonwealth Avenue, Boston University, Boston, Massachusetts 02215, United States
- The Photonics Center and ∥Department of Electrical and Computer Engineering, 8 Saint Mary’s Street, Boston University, Boston, Massachusetts 02215, United States
- Department of Material Science and Engineering and #Department of Chemistry, 2220 Campus Drive, Northwestern University, Evanston, Illinois 60208, United States
| | - A. K. Swan
- Department of Chemistry and ‡Department of Physics, 590 Commonwealth Avenue, Boston University, Boston, Massachusetts 02215, United States
- The Photonics Center and ∥Department of Electrical and Computer Engineering, 8 Saint Mary’s Street, Boston University, Boston, Massachusetts 02215, United States
- Department of Material Science and Engineering and #Department of Chemistry, 2220 Campus Drive, Northwestern University, Evanston, Illinois 60208, United States
| |
Collapse
|
|
2
|
Ma YZ, Graham MW, Fleming GR, Green AA, Hersam MC. Ultrafast exciton dephasing in semiconducting single-walled carbon nanotubes. PHYSICAL REVIEW LETTERS 2008; 101:217402. [PMID: 19113450 DOI: 10.1103/physrevlett.101.217402] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/02/2008] [Indexed: 05/27/2023]
Abstract
Femtosecond two-pulse degenerate four-wave mixing spectroscopy was applied to study the exciton dephasing in a broad range of excitation intensities and lattice temperatures. We find that both exciton-exciton and exciton-phonon scattering have profound effects on the dephasing process. The dominant phonon mode involved in the dephasing is identified as the out-of-plane, transverse optical mode with a frequency of 847 cm(-1). The extracted homogeneous linewidths at all measured temperatures are in excellent agreement with the results of a single-tube photoluminescence experiment.
Collapse
Affiliation(s)
- Ying-Zhong Ma
- Department of Chemistry, University of California, Berkeley, California 94720-1460, USA
| | | | | | | | | |
Collapse
|