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Proceedings Paper

Charge injection dynamics in organic multilayers
Author(s): Liang-Bih Lin; Ralph H. Young; M. Gary Mason; Deniz E. Schildkraut; Samson A. Jenekhe; Paul M. Borsenberger
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Paper Abstract

We describe transient photocurrents across organic interfaces. Two well known hole transporting molecular solids are used in this study. The energetics are evaluated by electrochemical measurements in solution and photoelectron spectroscopy of solid films. Charge injection is complete and without apparent delay when favored energetically. When injection is energetically unfavorable, some carries are injected very rapidly, and the rest very slowly, relative to a time scale of a few microsecond(s) . This dichotomy may be connected with a tendency to hop along the interface repeatedly before crossing it. Roughness of the interface or mixing of the two materials there may exacerbate the delay of injection for carriers that make many such 'lateral' hops.

Paper Details

Date Published: 16 December 1998
PDF: 6 pages
Proc. SPIE 3476, Organic Light-Emitting Materials and Devices II, (16 December 1998); doi: 10.1117/12.332608
Show Author Affiliations
Liang-Bih Lin, Eastman Kodak Co. and Univ. of Rochester (United States)
Ralph H. Young, Univ. of Rochester (United States)
M. Gary Mason, Eastman Kodak Co. and Univ. of Rochester (United States)
Deniz E. Schildkraut, Eastman Kodak Co. (United States)
Samson A. Jenekhe, Univ. of Rochester (United States)
Paul M. Borsenberger, Eastman Kodak Co. and Univ. of Rochester (United States)

Published in SPIE Proceedings Vol. 3476:
Organic Light-Emitting Materials and Devices II
Zakya H. Kafafi, Editor(s)

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