Abstract
We present a comparative study of optical and electronic properties for PbS nanocrystals and Au-PbS core-shell nanostructures. In Au-PbS nanostructures, we observed two nontrivial synergistic effects: (i) extinction enhancement due to coupling of surface plasmon resonance in the Au core to the excitonic states in the semiconducting PbS shell, and (ii) strong p-type electronic doping of Au-PbS nanocrystal solids that we explained by the intraparticle charge transfer between the PbS shell and the Au core.
Original language | English |
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Pages (from-to) | 9673-9675 |
Number of pages | 3 |
Journal | Journal of the American Chemical Society |
Volume | 130 |
Issue number | 30 |
DOIs | |
State | Published - 30 Jul 2008 |