Preparation of Monolayer Films Containing Biomimetic Photovoltaic Molecules and Their Study Using Scanning Probe Techniques

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This award is made by the Office of Special Projects in the Chemistry Division under the Materials Synthesis and Processing Initiative. Molecule-sized photovoltaic devices will be designed and synthesized using the principles of natural photosynthesis. These devices will be incorporated into Langmuir-Blodgett films and self-assembled monolayers on metal surfaces, and studied using time-resolved optical techniques. Producing such organized assemblies will overcome low current yields due to inefficient separation of electrical charge and injection of charge across interfaces. A scanning photoelectrochemical microscopy probe will be developed, capable of measuring the photoelectrical response of small regions of the films, or even of individual molecules. %%% Materials based on monolayer films hold substantial promise for the fabrication of electronic devices in general and photovoltaics in particular.