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Proceedings Paper

Photovoltaic responses in ionically self-assembled nanostructures containing conjugated polymers and fullerenes
Author(s): Charles Brands; T. Piok; Patrick J. Neyman; A. Erlacher; C. Soman; M. A. Murray; Raoul Schroeder; James Randy Heflin; Wilhelm Graupner; Daniela Marciu; Adam Drake; Michael B. Miller; Hong Wang; Harry W. Gibson; Harry C. Dorn; Guenther Leising; M. Guzy; Rick M. Davis
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Paper Abstract

We use the technique of ironically self-assembled monolayers (ISAMs) to produce photovoltaic devices of well-controlled thickness and composition. The ISAM nanostructure fabrication method simply involves the alternate dipping of a charged substrate into aqueous cationic and anionic solutions at room temperature. We have employed several approaches to combine the tetrahydrothiophenium precursor of PPV with fullerenes and other organic materials .We apply modulation spectroscopy for the electro-optical characterization of the ISAM-devices. Analyzing the thickness dependence of the recorded photocurrent action spectra allows us to identify the photoactive region within the devices. The modulation frequency dependence of the photocurrent can be assigned to the influence of trapped charges taking part in the photovoltaic process. By utilizing the ability to control both thickness and composition of the organic layer at a nanometer level of precision, the composition and concentration of these defects has ben systematically varied.

Paper Details

Date Published: 17 April 2000
PDF: 12 pages
Proc. SPIE 3937, Micro- and Nano-photonic Materials and Devices, (17 April 2000); doi: 10.1117/12.382794
Show Author Affiliations
Charles Brands, Virginia Polytechnic Institute and State Univ. (United States)
T. Piok, Virginia Polytechnic Institute and State Univ. and Technische Univ. Graz (Australia)
Patrick J. Neyman, Virginia Polytechnic Institute and State Univ. (United States)
A. Erlacher, Virginia Polytechnic Institute and State Univ. and Technische Univ. Graz (Austria)
C. Soman, Virginia Polytechnic Institute and State Univ. (United States)
M. A. Murray, Virginia Polytechnic Institute and State Univ. (United States)
Raoul Schroeder, Virginia Polytechnic Institute and State Univ. (United States)
James Randy Heflin, Virginia Polytechnic Institute and State Univ. (United States)
Wilhelm Graupner, Virginia Polytechnic Institute and State Univ. (United States)
Daniela Marciu, Luna Innovations, Inc. (United States)
Adam Drake, Luna Innovations, Inc. (United States)
Michael B. Miller, Luna Innovations, Inc. (United States)
Hong Wang, Virginia Polytechnic Institute and State Univ. (United States)
Harry W. Gibson, Virginia Polytechnic Institute and State Univ. (United States)
Harry C. Dorn, Virginia Polytechnic Institute and State Univ. (United States)
Guenther Leising, Technische Univ. Graz (Austria)
M. Guzy, Virginia Polytechnic Institute and State Univ. (United States)
Rick M. Davis, Virginia Polytechnic Institute and State Univ. (United States)


Published in SPIE Proceedings Vol. 3937:
Micro- and Nano-photonic Materials and Devices
Joseph W. Perry; Axel Scherer, Editor(s)

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