Speaker: Nathan S. Lewis, Caltech
Date & Time: March 28, 2006 - 11:00am
Location: Wright-Rieman Chemistry Auditorium
Progress and Challenges in Solar Energy Conversion Using Semiconductor/Liquid Junctions
Chemistry and Chemical Biology
Nathan S. Lewis, Caltech
11:00am, Wright-Rieman Chemistry Auditorium
Semiconductor/liquid contacts are useful in photoelectrochemical cells as well as for probing the fundamental surface chemistry and surface physics of semiconductors. In this talk, we will discuss the thermodynamics and dynamics of charge flow across semiconductor/liquid interfaces with an emphasis on comparison of theory and experiment for charge transfer in 1-electron outer-sphere redox systems. In addition, we will discuss the principles of surface modification to control the electrical, electronic, and chemical properties of Si surfaces. Finally, we will discuss the use of photoelectrochemistry in transport, localization, and movement of charge molecules in three dimensions in solution in real time.