Measurement of a reaction-diffusion crossover in exciton-exciton recombination inside carbon nanotubes using femtosecond optical absorption
Journal article
Allam, J, Sajjad, T, Sutton, R, Litvinenko, K, Wang, Zilong, Siddique, S, Yang, Q-H, Loh, Wei H and Brown, T (2013). Measurement of a reaction-diffusion crossover in exciton-exciton recombination inside carbon nanotubes using femtosecond optical absorption. Physical review letters. 111 (19), pp. 197401-197401. https://doi.org/10.1103/PhysRevLett.111.197401
| Authors | Allam, J, Sajjad, T, Sutton, R, Litvinenko, K, Wang, Zilong, Siddique, S, Yang, Q-H, Loh, Wei H and Brown, T |
|---|---|
| Abstract | Exciton-exciton recombination in isolated semiconducting single-walled carbon nanotubes was studied using femtosecond transient absorption. Under sufficient excitation to saturate the optical absorption, we observed an abrupt transition between reaction- and diffusion-limited kinetics, arising from reactions between incoherent localized excitons with a finite probability of ∼0.2 per encounter. This represents the first experimental observation of a crossover between classical and critical kinetics in a 1D coalescing random walk, which is a paradigm for the study of nonequilibrium systems. Copyright 2013 The American Physical Society. This is the author's version of a paper accepted for publication in Physical Review Letters |
| Year | 2013 |
| Journal | Physical review letters |
| Journal citation | 111 (19), pp. 197401-197401 |
| Publisher | American Physical Society |
| ISSN | 0031-9007 |
| Digital Object Identifier (DOI) | https://doi.org/10.1103/PhysRevLett.111.197401 |
| Publication dates | |
| 16 Oct 2013 | |
| Online | 16 Oct 2013 |
| Publication process dates | |
| Accepted | 16 Sep 2013 |
| Deposited | 12 Feb 2020 |
| Accepted author manuscript | License File Access Level Open |
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