AVS 54th International Symposium
    Renewable Energy Science & Technology Topical Conference Thursday Sessions
       Session EN+SS+TF-ThM

Invited Paper EN+SS+TF-ThM5
Progress and Challenges in Solar Energy Conversion Using Semiconductor/Liquid Junctions

Thursday, October 18, 2007, 9:20 am, Room 602/603

Session: Surface Science Challenges for Solar Energy Conversion
Presenter: N.S. Lewis, California Institute of Technology
Correspondent: Click to Email

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.