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Keywords:

  • Carbon nanotubes, single-walled;
  • Nanocrystals, semiconductor;
  • Photodetectors;
  • Polymer nanocomposites;
  • Quantum dots;
  • Surface functionalization
Thumbnail image of graphical abstract

PbSe quantum dots (QDs) are conjugated onto the surface of single-walled carbon nanotubes by a novel ligation procedure. The nanotubes are first surface-functionalized with thiol groups, which enable the adhesion of large numbers of colloidally prepared PbSe QDs. Polymeric nanocomposite IR photosensitizers made from these conjugate structures (see figure) generate significantly enhanced (≥ 100 %) IR photocurrents compared to devices using only QDs.