Answering the need for information that could revolutionize the development of alternate solar energy sources and the reduction of atmospheric contaminants, Semiconductor Photochemistry and Photophysics reflects renewed interest inspired by the unique properties of nanocrystalline semiconductor particles. It provides a thorough overview and describes fundamental research aimed at understanding the underlying mechanisms of the cells and looks at the application of nanocrystalline TiO2 as a photocatalyst for environmental remediation. Key topics include semiconductor photoelectrochemistry, dye-sensitized solar cells, and photocatalytic treatment of chemical waste.