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121(1-3) (2001), 1403-1404
Electroactive polyelectrolyte multilayers have been prepared using a water-soluble poly-3-(3'thienyloxy)propanesulfonate CP3TOPS). In aqueous solutions the properties of the multilayers were typical to polythiophene films. Charge transfer rate measurements indicate that P3TOPS can penetrate through ca. 4 polyelectrolyte bilayers.

[252] Photovoltaic Interface Modification via Electrostatic Self- Assembly

J. W. Baur, M. F. Durstock, B. E. Taylor, R. J. Spry, S. Reulbach and L. Y. Chiang

Synthet. Metal 121(1-3) (2001), 1547-1548

The device efficiency of PPV-C-60 based photovoltaic devices has been substantially increased by increasing the interfacial area between the electron donor and acceptor layers. Electrostatic Self-Assembly (ESA) provides a means to deposit thin films of electroactive materials with a very controlled thickness and has shown usefulness in modifying physical and electrical interfaces. in this study, we attempt to control the effective interfacial area by modifying the interface between the PPV electron donor and C-60-based electron acceptor with molecularly blended ESA bilayers of PPV and derivatized C-60 If is observed that with only 2 bilayers of (PPV/C-60(-)) a 3-fold increase in device efficiency is obtained. Thus, ESA films offer promise for the nanoscaled modification of interfaces in organic-based photocells.

[253] Photocarrier Generation Quantum Yield for Ionically Self- Assembled Monolayers

T. Piok, R. Schroeder, C. Brands, J. R. Heflin, G. Leising and W. Graupner

Synthet. Metal