Complexes and Clusters

Abstract

Crystalline semiconductors often contain more complex defective structures than the simple point defects which may be generated, for example, by intentional doping. These structures can be homogenously distributed in the semiconductor matrix and, in several cases, can dramatically modify the material properties with important implications in technological applications. In this chapter, we illustrate several examples in which XAS, coupled with state-of-art simulation tools, was able to gather important information on complexes and clusters and, in some case, to directly resolve their three-dimensional structure.