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 | |