ABSTRACT

This chapter summarizes a wide variety of recent developments in the synthesis and understanding of colloidal doped semiconductor nanocrystals, with emphasis on manganese and carbon dioxide as the dopants and on colloidal II-VI semiconductor quantum dots as the host nanocrystals. Following a brief general description of the electronic structures of these two ions in various II-VI semiconductor lattices, it discusses issues related to the synthesis, magneto-optics, and photoluminescence of colloidal doped nanocrystals with an eye toward defining the major general phenomena observed in studies of these materials. This chapter provides a brief description of quantum confinement effects on dopant-semiconductor potential offsets and a few outlook comments. Although classical ionic radii provide good guidelines for anticipating strain effects introduced on doping, more microscopic insight can be obtained from studying cation–anion bond lengths in doped nanocrystals.