This volume aims at bringing together the results of extensive research
done during the last fifteen years on the interfacial photoelectronic
properties of the inorganic layered semiconducting materials, mainly in
relation to solar energy conversion. Significant contributions have been
made both on the fundamental aspects of interface characteristics and on
the suitability of the layered materials in photoelectrochemical
(semiconductor/electrolyte junctions) and in solid state
photovoltaic(Schottky and p-n junctions) cells. New insights into the
physical and chemical characteristics of the contact surfaces have been
gained and many new applications of these materials have been revealed.
In particular, the basal plane surface of the layered materials shows
low chemical reactivity and specific electronic behaviour with respect
to isotropic solids. In electrochemical systems, the inert nature of
these surfaces characterized by saturated chemical bonds has been
recognized from studies on charge transfer reactions and catalysis. In
addition, studies on the role of the d-band electronic transitions and
the dynamics of the photogene rated charge carriers in the relative
stability of the photoelectrodes of the transition metal dichalcogenides
have deepened the understanding of the interfacial photoreactions.
Transition metal layered compounds are also recognized as ideal model
compounds for the studies Involving surfaces: photoreactions, adsorption
phenomena and catalysis, scanning tunneling microscopy and spectroscopy
and epitaxial growth of thin films. Recently, quantum size effects have
been investigated in layered semiconductor colloids.