Synthesis, Spectroscopy, and Size Dependent Development of Band Structure in n Semiconductor Clusters

A novel interfacial organometallic reaction yielding CdSe semiconductor clusters in the ~15 to 50angstroms diameter range has been found in reverse micelle microemulsions. The synthesis affords reproducible and precise size control. Direct electron microscope imaging of cluster structure shows the clusters to be three dimensional zinc-blende crystallites. The presence of both hydrophobic and aqueous phased in the microemulsion permits simultaneous use of organometallic and inorganic reagents, thus extending the range of reactions and final products.