ATTENTION: The software behind KU ScholarWorks is being upgraded to a new version. Starting July 15th, users will not be able to log in to the system, add items, nor make any changes until the new version is in place at the end of July. Searching for articles and opening files will continue to work while the system is being updated.
If you have any questions, please contact Marianne Reed at mreed@ku.edu .
Exciton diffusion in semiconducting single-walled carbon nanotubes studied by transient absorption microscopy
dc.contributor.author | Ruzicka, Brian Andrew | |
dc.contributor.author | Wang, Rui | |
dc.contributor.author | Lohrman, Jessica | |
dc.contributor.author | Ren, Shenqiang | |
dc.contributor.author | Zhao, Hui | |
dc.date.accessioned | 2014-12-18T15:02:52Z | |
dc.date.available | 2014-12-18T15:02:52Z | |
dc.date.issued | 2012-11-09 | |
dc.identifier.citation | Ruzicka, Brian A. et al. (2012). "Exciton diffusion in semiconducting single-walled carbon nanotubes studied by transient absorption microscopy." Physical Review B, 86(20)205417. http://dx.doi.org/10.1103/PhysRevB.86.205417 | |
dc.identifier.issn | 1098-0121 | |
dc.identifier.uri | http://hdl.handle.net/1808/16167 | |
dc.description | This is the publisher's version, also available electronically from http://journals.aps.org/prb/abstract/10.1103/PhysRevB.86.205417. | |
dc.description.abstract | Spatiotemporal dynamics of excitons in isolated semiconducting single-walled carbon nanotubes are studied using transient absorption microscopy. Differential reflection and transmission of an 810-nm probe pulse after excitation by a 750-nm pump pulse are measured. We observe a biexponentially decaying signal with a fast time constant of 0.66 ps and a slower time constant of 2.8 ps. Both constants are independent of the pump fluence. By spatially and temporally resolving the differential reflection, we are able to observe a diffusion of excitons, and measure a diffusion coefficient of 200±10 cm2/s at room temperature and 300±10 cm2/s at lower temperatures of 10 K and 150 K. | |
dc.publisher | American Physical Society | |
dc.title | Exciton diffusion in semiconducting single-walled carbon nanotubes studied by transient absorption microscopy | |
dc.type | Article | |
kusw.kuauthor | Lohrman, Jessica | |
kusw.kuauthor | Ren, Shenqiang | |
kusw.kudepartment | Chemistry | |
dc.identifier.doi | 10.1103/PhysRevB.86.205417 | |
kusw.oaversion | Scholarly/refereed, publisher version | |
kusw.oapolicy | This item meets KU Open Access policy criteria. | |
dc.rights.accessrights | openAccess |