Title: Hierarchically structured semiconductors for solar-driven water splitting applications
Abstract: Solar energy is the most prevalent source of renewable electricity on earth, though methods of storage are required for on-demand utilization. Semiconductor-liquid interfaces can be engineered to perform fuel-forming chemical reactions under illumination. Through these reactions, solar energy can be stored in chemical bonds, which can be recombined in a fuel cell to produce electricity or used as a feedstock to produce more energy-dense liquid fuels. In this seminar, I will discuss efforts to develop scalable semiconductor materials for solar-driven water splitting applications. First, I will outline strategies for coupling metal-oxide photoanodes to silicon-based photocathodes in a tandem configuration to produce monolithic water splitting devices. I will discuss a method to control the independent microstructure of these materials via self-assembled microsphere templates. Finally, I will summarize the experimental results and simulations that demonstrate the benefits of hierarchically structured photoanodes. This work provides a materials-independent framework for the development of robust, inexpensive, and scalable tandem water-splitting materials.
Colloq flyer 2-23 Coridan