Enhanced semiconductor nanocrystal conductance via solution grown contacts. Academic Article uri icon


  • We report a 100000-fold increase in the conductance of individual CdSe nanorods when they are electrically contacted via direct solution phase growth of Au tips on the nanorod ends. Ensemble UV-vis and X-ray photoelectron spectroscopies indicate this enhancement does not result from alloying of the nanorod. Rather, low temperature tunneling and high temperature (250-400 K) thermionic emission across the junction at the Au contact reveal a 75% lower interface barrier to conduction compared to a control sample. We correlate this barrier lowering with the electronic structure at the Au-CdSe interface. Our results emphasize the importance of a nanocrystal surface structure for robust device performance and the advantage of this contact method.

altmetric score

  • 5.032

author list (cited authors)

  • Sheldon, M. T., Trudeau, P., Mokari, T., Wang, L., & Alivisatos, A. P

citation count

  • 118

complete list of authors

  • Sheldon, Matthew T||Trudeau, Paul-Emile||Mokari, Taleb||Wang, Lin-Wang||Alivisatos, A Paul

publication date

  • January 2009