Energetic Polymeric Nanomaterials for Satellite Power Systems Design

Physical Sciences Inc. (PSI) proposes to develop a flexible, solid-state, photovoltaic device, for spacecraft with inflatable solar arrays and high altitude airships. Typically, the I3-/I- redox mediator, and Ru(dcbH2)(NCS)2 sensitizer are used for liquid based dye-sensitized solar cells (DSSC). PSI will alter the identity of the redox mediator in order to increase cell voltage. We will also use a sensitizer with electrochemical potentials appropriate for use with this mediator, while maintaining an absorption spectrum comparable to that of Ru(dcbH2)(NCS)2. Solid-state devices will be processed using an inert polymer containing the redox mediator. They will be lightweight and flexible, easy to manufacture, applicable to large surface areas, and inexpensive. These attributes give DSSC advantages over other photovoltaics since they can be accommodate the spacecraft's size and shape. During Phase II, PSI will evaluate the influence of other components, filter incident UV light, and increase efficiency.