Au−PbS Core−Shell Nanocrystals: Plasmonic Absorption Enhancement and Electrical Doping via Intra-particle Charge Transfer
- 1 July 2008
- journal article
- research article
- Published by American Chemical Society (ACS) in Journal of the American Chemical Society
- Vol. 130 (30), 9673-9675
- https://doi.org/10.1021/ja802890f
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.This publication has 23 references indexed in Scilit:
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