Preparation of II–VI quantum dot composites by electrospray organometallic chemical vapor deposition

Daněk, M.; Jensen, Klavs F.; Murray, Christopher B.; Bawendi, Moungi G.

doi:10.1016/0022-0248(94)91132-0

Cited by 45 publications

(26 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…There are still problems in understanding how nanoparticulate physical properties develop when a macrocrystalline material is built up from these smaller units. The synthesis and characterization of clusters having structural similarities to larger nanocrystallites 164,165 may allow for an improved 148,149 the use of CdSe/TOPO nanocrystals in a thin film device, in which the wavelength of emission could be tuned by selection of nanocrystal size. Nanocrystallites of CdSe were surface derivatized with pyridine and then grown into a semiconducting thin film, using electrospray organometallic chemical vapor deposition.…”

Section: Processabilitymentioning

confidence: 99%

Nanocrystalline Semiconductors: Synthesis, Properties, and Perspectives

2001

View full text Add to dashboard Cite

The synthesis and study of so-called "nanoparticles", particles with diameters in the range of 1-20 nm, has become a major interdisciplinary area of research over the past 10 years. Semiconductor nanoparticles promise to play a major role in several new technologies. The intense interest in this area derives from their unique chemical and electronic properties, which gives rise to their potential use in the fields of nonlinear optics, luminescence, electronics, catalysis, solar energy conversion, and optoelectronics, as well as other areas. The small dimensions of these particles result in different physical properties from those observed in the corresponding macrocrystalline, "bulk", material. As particle sizes become smaller, the ratio of surface atoms to those in the interior increase, leading to the surface properties playing an important role in the properties of the material. Semiconductor nanoparticles also exhibit a change in their electronic properties relative to that of the bulk material; as the size of the solid becomes smaller, the band gap becomes larger. This allows chemists and material scientists the unique opportunity to change the electronic and chemical properties of a material simply by controlling its particle size. Research has already led to the fabrication of a number of devices. This review aims to highlight recent advances in the synthesis of compound semiconductor nanoparticle materials and their potential use in areas such as catalysis and electronic device fabrication.

show abstract

Section: Processabilitymentioning

confidence: 99%

Nanocrystalline Semiconductors: Synthesis, Properties, and Perspectives

2001

View full text Add to dashboard Cite

show abstract

“…QDs have been reported (Crouch et al, 2003;Heine et al, 1998;Lou et al, 2004;Murray et al, 1993;Murray et al, 2000;Murray et al, 2001;Nordell et al, 2005;Park et al, 2004;Rosenthal et al, 2007;Yoon et al, 2005;Yu et al, 2005). The essential elements of these methods involve appropriate metallic or organometallic precursors (zinc, cadmium or mercury) with corresponding chalcogen precursors (sulfur, selenium or tellurium) in a coordinating solvent at high temperatures (Danek et al, 1994;Heine et al, 1998;Lou et al, 2004;Malik et al, 2005;Murray et al, 1993;Murray et al, 2000;Murray et al, 2001;Nann et al, 2002;Peng et al, 2001). The pyrolysis of organometallic precursors of cadmium and Se (or Te) introduced in (Murray et al, 1993;Murray et al, 2000) continues to be a wide used method for synthesizing CdSe or CdTe QDs.…”

Section: Synthesis Of Ii-vi Semiconductor Core/shell Qds and Encapsulmentioning

confidence: 99%

Semiconductor II-VI Quantum Dots with Interface States and Their Biomedical Applications

Torchynska¹,

Vorobiev²

2011

Advanced Biomedical Engineering

View full text Add to dashboard Cite

“…Once fabricated, nanocrystal quantum dots can be dissolved in a number of polar and non-polar solvents, they can be embedded into a variety of polymers and even incorporated into thin films of bulk semiconductors. [9,10] They can also be manipulated into close-packed glassy thin films, [11] ordered three-dimensional superlattices (colloidal crystals), [12] or linked to form quantum dot molecules. [13] Such a high degree of flexibility and control makes nanocrystal quantum dots ideally suited to the study of zero-dimensional physics.…”

Section: Introductionmentioning

confidence: 99%

Photoluminescence from Single Semiconductor Nanostructures

et al. 1999

View full text Add to dashboard Cite

We review some recent results in the spectroscopy of single CdSe nanocrystal quantum dots. By eliminating the effects of inhomogeneous broadening and ensemble averaging, single nanocrystal spectroscopy has revealed many new and previously unexpected physical phenomena. Among those discussed in this review are ultra-narrow emission lineshapes (~600´narrower than ensemble spectra), a highly polarizable emitting state in the presence of strong local electric fields, line broadening as a result of environmental fluctuations, and shifting of the emission spectra over a wide range of energies (from less than 300 meV to 80 meV). In addition, polarization spectroscopy of single nanocrystals has revealed the presence of a theoretically predicted two-dimensional transition dipole moment oriented in the xy plane of the nanocrystals. As a result, it is, in principle, possible to use polarization spectroscopy to determine the three-dimensional orientation of individual nanocrystals. These and other studies of single quantum dots have provided us with significant insight into the detailed physics and dynamics of this unique and fascinating physical system.

show abstract

Preparation of II–VI quantum dot composites by electrospray organometallic chemical vapor deposition

Cited by 45 publications

References 19 publications

Nanocrystalline Semiconductors: Synthesis, Properties, and Perspectives

Nanocrystalline Semiconductors: Synthesis, Properties, and Perspectives

Semiconductor II-VI Quantum Dots with Interface States and Their Biomedical Applications

Photoluminescence from Single Semiconductor Nanostructures

Contact Info

Product

Resources

About