Au−PbS Core−Shell Nanocrystals: Plasmonic Absorption Enhancement and Electrical Doping via Intra-particle Charge Transfer
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 excit...
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| Veröffentlicht in: | Journal of the American Chemical Society 2008-07, Vol.130 (30), p.9673-9675 |
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| container_issue | 30 |
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| container_title | Journal of the American Chemical Society |
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| creator | Lee, Jong-Soo Shevchenko, Elena V Talapin, Dmitri V |
| description | 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. |
| doi_str_mv | 10.1021/ja802890f |
| format | Article |
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| source | ACS Publications |
| title | Au−PbS Core−Shell Nanocrystals: Plasmonic Absorption Enhancement and Electrical Doping via Intra-particle Charge Transfer |
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