Speaker: Prof. Harry Atwater - Director, Joint Center for Artificial Photosynthesis California institute of Technology

Gathering - 12:00

Lecture – 12:30-13:30

Auditorium 011, Engineering Class Room Building,

Faculty of Engineering, Tel-Aviv University

Abstract:
The recent rapid, global growth of photovoltaics has moved scientific research frontiers for solar energy conversion towards new
opportunities including i) ultrahigh e‚ciency photovoltaics („ > 30%) and ii) direct synthesis of energy-dense chemical fuels from sunlight,
including hydrogen and products from reduction of carbon dioxide.

I will illustrate several examples of how design of materials for light
harvesting, charge transport and catalytic selectivity can enable advances in electricity and fuel synthesis. Photonic design has opened
new directions for high e‚ciency photovoltaics and luminescent solar concentrators. Semiconductors coupled to water oxidation
and reduction catalysts have enabled approaches to photoelectrochemical solar-to-hydrogen generation with >19% e‚ciency using
artificial photosynthetic structures. Solar-driven reduction of carbon dioxide presents both an enormous opportunity and challenge
because of the need for selectivity in generating useful multi-carbon products by multiple electron and multi-proton transfer steps.
Present work and future directions in selective photocatalytic and photo-electrocatalytic materials for artificial photosynthesis aimed
at catalytic reduction of carbon dioxide will be discussed