Plasma‐Assisted Synthesis of Silicon Nanocrystal Inks

  title={Plasma‐Assisted Synthesis of Silicon Nanocrystal Inks},
  author={Lorenzo Mangolini and Uwe R. Kortshagen},
  journal={Advanced Materials},

Near-Unity Internal Quantum Efficiency of Luminescent Silicon Nanocrystals with Ligand Passivation.

It is concluded that the observed monoexponential decay in size-selected ensembles signifies negligible nonradiative transitions of a similar strength to the radiative one, suggesting 100% internal quantum efficiency over a broad range of emission wavelengths.

Recent Advances in Inflammatory Diagnosis with Graphene Quantum Dots Enhanced SERS Detection

Inflammatory diseases are some of the most common diseases in different parts of the world. So far, most attention has been paid to the role of environmental factors in the inflammatory process. The

Circularly Polarized Light Source from Self‐Assembled Hybrid Nanoarchitecture

Circularly polarized luminescent inorganics arouses attentions due to scalable preparation and versatile chiral optoelectronic applications. Here, strong circularly polarized luminescence (CPL)

Designing Efficient Si Quantum Dots and LEDs by Quantifying Ligand Effects.

From the two well-defined SiQDs, the PLQY and SiQD LED efficiency were attributed to four factors: low coverage of insulator ligands, the Cl ligand effect on radiative and nonradiative rates, negligible dangling bonds, and aSiQD core with low tensile stress.

Nonthermal plasma synthesized silicon-silicon nitride core–shell nanocrystals with enhanced photoluminescence

Enhanced optical properties of silicon quantum dots (QDs) are pertinent for light-emitting applications including luminescent solar cell concentrators. Surface passivation plays a crucial role in

Low-Cost Synthesis of Silicon Quantum Dots with Near-Unity Internal Quantum Efficiency

It is found that the structural nonuniformity and abundance of oxide inherent to SiO limited the resultant QD performance, while for TES-derived QDs this drawback can be avoided and the presented low-cost synthetic approach would significantly favor applications requiring high loading of good-quality Si QDs, such as light conversion for photovoltaics.

Inductively coupled nonthermal plasma synthesis of aluminum nanoparticles

While the Al nanoparticles are covered with 2–4 nm thick oxide shells, the best synthesis conditions yield particle sizes determined by electron microscopy that are comparable to crystallite sizes determined from x-ray diffraction.

Crystalline silicon nanoparticle formation by tailored plasma irradiation: self-structurization, nucleation and growth acceleration, and size control.

A new self-assembly method is reported that applies the controlled extremely low plasma ion energy near the sputtering threshold energy in rare gas environments as nonharsh and nontoxic environments and produces silicon nanoparticles by crystallization nucleation directly at the surface of the amorphous film via plasma surface interactions.



Size Tunable Visible Luminescence from Individual Organic Monolayer Stabilized Silicon Nanocrystal Quantum Dots

Quantum confinement in nanostructured silicon can lead to efficient light emission. However, the photoluminescence (PL) lifetimes in nanostructured silicon are typically very long−approximately 3

Silicon nanocrystals with ensemble quantum yields exceeding 60

Silicon nanocrystals with diameters of less than 5nm show efficient photoluminescence at room temperature. For ensembles of silicon quantum dots, previous reports of photoluminescence quantum yields

Charge injection and transport in films of CdSe nanocrystals

We have studied charge injection and charge transport in thin disordered films of CdSe nanocrystals between metal electrodes. Current–voltage characteristics of these devices are investigated as a

Electronic transport in films of colloidal CdSe nanocrystals

We present results for electronic transport measurements on large three-dimensional arrays of CdSe nanocrystals. In response to a step in the applied voltage, we observe a power-law decay of the

Silicon hydride composition of plasma-deposited hydrogenated amorphous and nanocrystalline silicon films and surfaces

In situ attenuated total reflection Fourier transform infrared spectroscopy was used to study the H bonding on the surfaces of a-Si:H and nc-Si:H during plasma enhanced chemical vapor deposition from

Chemical Vapor Deposition of Zirconium Oxide on Aerosolized Silicon Nanoparticles

Nanoscale shells of ZrO2 were deposited onto size-selected, aerosolized Si nanoparticles by chemical vapor deposition (CVD). The CVD precursor was nitronium pentanitratozirconate (ZN,

High efficiency photoluminescence from silicon nanocrystals prepared by plasma synthesis and organic surface passivation

An efficient synthesis route for highly luminescent silicon quantum dots is presented. Silicon nanocrystals were synthesized in the gas phase using an argon-silane non-thermal plasma in a continuous