Published on Web 12/15/2006
Catalyst-Assisted Solution-Liquid-Solid Synthesis of CdS/CdSe Nanorod Heterostructures Lian Ouyang, Kristin N. Maher, Chun Liang Yu, Justin McCarty, and Hongkun Park* Contribution from the Department of Chemistry and Chemical Biology, HarVard UniVersity, 12 Oxford Street, Cambridge, Massachusetts 02138 Received August 28, 2006; E-mail:
[email protected] Abstract: We report the synthesis and characterization of axial nanorod heterostructures composed of cadmium selenide (CdSe) and cadmium sulfide (CdS). The synthesis employs a solution-liquid-solid (SLS) mechanism with the assistance of bismuth nanocrystals adhered to a substrate (silicon or a III-V semiconductor). Transmission electron microscopy (TEM) and diffraction studies show that CdSe and CdS segments exhibit the wurtzite (hexagonal) crystal structure with
