PREPARATION, CHARACTERIZATION, AND PHOTOPHYSICS OF THE QUANTUM-DOT QUANTUM-WELL SYSTEM CDS HGS/CDS/

The synthetic procedure, the characterization, and some photophysical properties of a quantum dot quantum well (QDQW) system are described i n detail. The novel structures prepared via wet chemical methods consi st of a core of size-quantized CdS and a well of 1-3 monolayers of HgS capped by 1-5 monolayers of CdS acting as the outermost shell. Additi onally, theoretical calculations based on the effective mass approxima tion appropriate to describe the 1s-1s electronic transition of the co mposite particles are presented.