Plasmon-induced hot electron transfer from the Au tip to CdS rod in CdS-Au nanoheterostructures

Nano Lett. 2013 Nov 13;13(11):5255-63. doi: 10.1021/nl402730m. Epub 2013 Oct 14.

Abstract

The plasmon-exciton interaction mechanisms in CdS-Au colloidal quantum-confined plexcitonic nanorod heterostructures have been studied by transient absorption spectroscopy. Optical excitation of plasmons in the Au tip leads to hot electron injection into the CdS rod with a quantum yield of ~2.75%. This finding suggests the possibility of further optimization of plasmon-induced hot electron injection efficiency through controlling the size and shape of the plasmonic and excitonic domains for potential light harvesting applications.

Publication types

  • Research Support, U.S. Gov't, Non-P.H.S.