Publication Type |
Journal Article |
School or College |
College of Science |
Department |
Physics |
Creator |
Lupton, John Mark |
Other Author |
Voigt, M.; Langner, A.; Schouwink, P.; Mahrt, R. F.; Sokolowski, M. |
Title |
Picosecond time-resolved photoluminescence spectroscopy of a tetracene film on highly oriented pyrolytic graphite: dynamical relaxation, trap emission and superradiance |
Date |
2007 |
Description |
A detailed time resolved investigation of the photoluminescence of a thin tetracene film deposited on highly oriented pyrolytic graphite is presented. In agreement with Lim et al. [Phys. Rev. Lett. 92, 107402 (2004)], we find strong evidence for superradiance: an increase of the relative intensity of the pure electronic transition with respect to the vibronic sideband and a concomitant decrease of the radiative lifetime from 10 to 1.83 ns upon cooling from 300 to 4 K. For lower temperatures, a redshift (~200 cm−1) of the free exciton is observed. Previously, this shift was attributed to a structural phase transition. Our time resolved spectra reveal that the spectral shift is related to a dynamical relaxation process which occurs within the first 50 ps. |
Type |
Text |
Publisher |
American Institute of Physics (AIP) |
Journal Title |
The Journal of Chemical Physics |
Volume |
127 |
Issue |
11 |
First Page |
114705 |
DOI |
10.1063/1.2766944 |
citatation_issn |
219606 |
Subject |
Tetracene film; Pyrolytic graphite Photoluminescence spectroscopy; pi-conjugated polymers; Dynamical relaxation; Trap emission; Superradiance |
Subject LCSH |
Thin films -- Optical properties |
Language |
eng |
Bibliographic Citation |
Voigt, M., Langner, A., Schouwink, P., Lupton, J. M., Mahrt, R. F., & Sokolowski, M. (2007). Picosecond time-resolved photoluminescence spectroscopy of a tetracene film on highly oriented pyrolytic graphite: dynamical relaxation, trap emission and superradiance. Journal of Chemical Physics, 127, 114705. |
Rights Management |
(c)American Institute of Physics. The following article appeared in Voigt, M., Langner, A., Schouwink, P., Lupton, J. M., Mahrt, R. F., & Sokolowski, M., Journal of Chemical Physics, 127, 2007 and may be found at http://dx.doi.org/10.1063/1.2766944 |
Format Medium |
application/pdf |
Format Extent |
574,139 bytes |
Identifier |
ir-main,11850 |
ARK |
ark:/87278/s6z89wnn |
Setname |
ir_uspace |
ID |
703938 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6z89wnn |