Heavily-doped colloidal semiconductor and metal oxide nanocrystals: an emerging new class of plasmonic nanomaterials.

  title={Heavily-doped colloidal semiconductor and metal oxide nanocrystals: an emerging new class of plasmonic nanomaterials.},
  author={Xin Liu and Mark T. Swihart},
  journal={Chemical Society reviews},
  volume={43 11},
The creation and study of non-metallic nanomaterials that exhibit localized surface plasmon resonance (LSPR) interactions with light is a rapidly growing field of research. These doped nanocrystals, mainly self-doped semiconductor nanocrystals (NCs) and extrinsically-doped metal oxide NCs, have extremely high concentrations of free charge carriers, which allows them to exhibit LSPR at near infrared (NIR) wavelengths. In this tutorial review, we discuss recent progress in developing and… 
Plasmonic semiconductor: A tunable non-metal photocatalyst
Tunable mid IR plasmon in GZO nanocrystals.
The tunable mid IR plasmon induced in degenerate Ga-doped ZnO nanocrystals is reported on, demonstrating that it partially results from the self-organization of the naked particles and also from intrinsic inhomogeneity of dopants.
Luminescence, Plasmonic, and Magnetic Properties of Doped Semiconductor Nanocrystals.
Doped nanocrystals with proper selections of dopant-host pairs may be helpful for generating designer materials for a wide range of current technological needs.
Plasmon Resonance in Photoabsorption of Colloidal Highly Doped ZnO Nanocrystals
It is demonstrated that in photodoped ZnO nanocrystals, the conduction band electrons are localized close to the surface and the plasmon oscillations are induced by their angular motion.
Ligand-Free, Colloidal, and Plasmonic Silicon Nanocrystals Heavily Doped with Boron
Colloidal heavily doped silicon nanocrystals (Si NCs) exhibiting tunable localized surface plasmon resonance (LSPR) are of great interest in cost-effective, solution-processed optoelectronic devices
Expanding the spectral tunability of plasmonic resonances in doped metal-oxide nanocrystals through cooperative cation-anion codoping.
It is demonstrated that, in addition to the use of common cation dopants, the incorporation of fluorine into the lattice as an anion dopant can further increase the free-carrier concentration within individual NCs; this supports the cooperative effects of mixed cation-anion doping in shifting the LSPR to higher energies.
A diverse array of colloidal semiconductor nanomaterials has been synthesized and studied over the past few decades. They are being explored or employed in many emerging applications based on their
Synthetic Strategies for Semiconductor Nanocrystals Expressing Localized Surface Plasmon Resonance.
  • J. Niezgoda, S. Rosenthal
  • Chemistry, Physics
    Chemphyschem : a European journal of chemical physics and physical chemistry
  • 2016
This Minireview will provide an overview of the current state of nanocrystal and quantum-dot plasmonics and the physical basis thereof, however its main purpose is to summarize the methods for realizing LSPRs in the various syntheses and systems that have been reported to date.


Tunable infrared absorption and visible transparency of colloidal aluminum-doped zinc oxide nanocrystals.
The presence of substitutional aluminum in the zinc oxide lattice accompanied by the generation of free electrons is proved for the first time by tunable surface plasmon absorption in the infrared region both in solution and in thin films.
Phosphorus-doped silicon nanocrystals exhibiting mid-infrared localized surface plasmon resonance.
Doped silicon nanocrystals synthesized via a nonthermal plasma technique that exhibits tunable LSPRs in the energy range of 0.07-0.3 eV or mid-infrared wavenumbers of 600-2500 cm(-1) are demonstrated.
Tunable localized surface plasmon resonances in tungsten oxide nanocrystals.
It is demonstrated that metallic phases of WO(3-δ) nanoparticles exhibit a strong and tunable localized surface plasmon resonance, which opens up the possibility of rationally designing plasMonic tungsten oxide nanoparticles for light harvesting, bioimaging, and sensing.
Localized surface plasmon resonances arising from free carriers in doped quantum dots.
It is demonstrated that doped semiconductor QDs allow realization of LSPRs and quantum-confined excitons within the same nanostructure, opening up the possibility of strong coupling of photonic and electronic modes, with implications for light harvesting, nonlinear optics, and quantum information processing.
Dynamically modulating the surface plasmon resonance of doped semiconductor nanocrystals.
It is shown that the surface plasmons of tin-doped indium oxide nanocrystal films can be dynamically and reversibly tuned by postsynthetic electrochemical modulation of the electron concentration.
Indium tin oxide nanoparticles with compositionally tunable surface plasmon resonance frequencies in the near-IR region.
Unlike noble-metal nanostructures, ITO has no inter- and intraband transitions in the vis-near-IR region and represents a free-electron conduction, allowing us to systematically study the origin of optical effects arising from the SPRs of conduction electrons.
Nb-Doped Colloidal TiO2 Nanocrystals with Tunable Infrared Absorption
We report a new colloidal synthesis of niobium-doped TiO2 anatase nanocrystals (NCs) that allows for the preparation of ∼10 nm NCs with control over the amount of Nb doping up to ∼14%. The
Metal ions to control the morphology of semiconductor nanoparticles: copper selenide nanocubes.
The potential of foreign metal ions to tune the morphology of colloidal semiconductor nanoparticles by cation exchange is demonstrated and the plasmonic properties of the obtained nanocrystals are characterized.
Localized surface plasmon resonances of anisotropic semiconductor nanocrystals.
We demonstrate that anisotropic semiconductor nanocrystals display localized surface plasmon resonances that are dependent on the nanocrystal shape and cover a broad spectral region in the near-IR
Shape-dependent plasmonic response and directed self-assembly in a new semiconductor building block, indium-doped cadmium oxide (ICO).
This work reports the first observation of plasmonic resonance in indium-doped cadmium oxide (ICO) nanocrystals, which exhibit the highest quality factors reported for semiconductor nanocry crystals.