Photovoltaic responses in ionically self-assembled nanostructures containing conjugated polymers and fullerenes

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

doi:10.1117/12.382794

17 April 2000 Photovoltaic responses in ionically self-assembled nanostructures containing conjugated polymers and fullerenes

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

Author Affiliations +

Proceedings Volume 3937, Micro- and Nano-photonic Materials and Devices; (2000) https://doi.org/10.1117/12.382794
Event: Symposium on Integrated Optoelectronics, 2000, San Jose, CA, United States

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.

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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, and Rick M. Davis "Photovoltaic responses in ionically self-assembled nanostructures containing conjugated polymers and fullerenes", Proc. SPIE 3937, Micro- and Nano-photonic Materials and Devices, (17 April 2000); https://doi.org/10.1117/12.382794

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