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Single-shot transient absorption spectroscopy of an organic film

Published online by Cambridge University Press:  25 April 2018

Kelly S. Wilson ,
Madelyn N. Scott  and
Cathy Y. Wong
Kelly S. Wilson
Affiliation:
Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon97403, USA
Madelyn N. Scott
Affiliation:
Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon97403, USA
Cathy Y. Wong*
Affiliation:
Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon97403, USA Oregon Center for Optical, Molecular, and Quantum Science, University of Oregon, Eugene, Oregon97403, USA Materials Science Institute, University of Oregon, Eugene, Oregon97403, USA
*
*Corresponding author: cwong3@uoregon.edu
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Abstract

We report single-shot transient absorption (SSTA) measurements of an organic film of 3,3’-Diethyloxatricarbocyanine iodide (DOTCI). In SSTA, the pump-probe time delay is spatially encoded by using a tilted pump pulse. Translation of the sample during SSTA measurements averages over any spatial heterogeneity in the film. We demonstrate that exciton dynamics measured with the single-shot technique agrees with traditional transient absorption measurements of the same film. A signal-to-noise ratio of ∼40 is achieved in 10 s. The ability to measure exciton dynamics in organic films will enable future SSTA measurements of exciton dynamics during the molecular aggregation events that result in film formation.

Keywords

spectroscopyin situsolution depositionfilmoptoelectronic
Type
Articles
Information
MRS Advances , Volume 3 , Issue 59: Electronic and Photonic Materials , 2018 , pp. 3453 - 3457
Copyright
Copyright © Materials Research Society 2018 

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References

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