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Proceedings Paper

Carrier dynamics in solid C60
Author(s): Naomi J. Halas
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Paper Abstract

The time dependence of the carrier relaxation in undoped solid C60 thin films has been studied by monitoring changes in the optical transmission upon photoexcitation at the HOMO- LUMO band edge. The relaxation closely follows a Kohlrausch-Williams-Watts decay with an exponent of (beta) equals 0.4. This functional form is typical of carrier relaxation associated with states of localized rather than extended character. Observation of this decay is highly dependent on film purity, which in turn is highly dependent on the methods used in the fullerene purification and separation processes. The effects of fullerene processing procedures on the observed carrier dynamics in solid C60 is discussed.

Paper Details

Date Published: 17 June 1993
PDF: 10 pages
Proc. SPIE 1861, Ultrafast Pulse Generation and Spectroscopy, (17 June 1993); doi: 10.1117/12.147124
Show Author Affiliations
Naomi J. Halas, Rice Univ. (United States)

Published in SPIE Proceedings Vol. 1861:
Ultrafast Pulse Generation and Spectroscopy
Timothy R. Gosnell; Antoinette J. Taylor; Keith A. Nelson; Michael C. Downer, Editor(s)

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