silicon nanocrystals
Silicon nanocrystals for silicon photonics
... One of the advantages of working for Harry has been the excellent group of fellow stu- dents that I have had the pleasure to work with in his lab. In particular, I have collaborated with Julie Biteen, Julie Brewer, Ryan ...
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Enhancement of photoluminescence signal from ultrathin layers with silicon nanocrystals
... In conclusion, we performed a quantitative analysis of the processes of excitation of PL light and its subsequent emergence from the SiNCs containing sample. It was found that the PL intensity of the investigated samples ...
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SOME ASPECTS OF ELECTRONIC STRUCTURE OF OXIDIZED SILICON NANOCRYSTALS ESPECIALLY SURFACE AND CORE
... circuits. Silicon is widely used in semiconductors because it remains a semiconductor at higher temperatures than the semiconductor germanium and because its native oxide forms a better semiconductor/dielectric ...
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Erbium and Silicon Nanocrystals based Light Emitting Devices for lightwave circuits
... nanostructured silicon offers in comparison to bulk silicon, it is still a relatively poor optical material compared to the direct gap III-V semiconductor ...bulk silicon at 10 ...work. ...
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In situ grown hexagonal silicon nanocrystals in silicon carbide based films
... Silicon nanocrystals (Si-NCs) were grown in situ in carbide-based film using a plasma-enhanced chemical vapor deposition ...amorphous silicon carbide-based ...hexagonal-wurtzite silicon phase ...
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Silicon Nanocrystals on the Surface of Standard Si Wafers: A Micro Raman Investigation
... of silicon nanocrystals on the surface of standard wafer samples of Si, conserved under “usual” laboratory conditions, has been investigated by micro-Raman analysis, performed for increasing intensity of ...
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Power dependent spectral shift of photoluminescence from ensembles of silicon nanocrystals
... of nanocrystals, and these introduce a relation between the emission wavelength and the size of ...of nanocrystals with a distribution of sizes are studied, this can have profound effects on their ...
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Reappraising the Luminescence Lifetime Distributions in Silicon Nanocrystals
... of nanocrystals are complicated by a variety of processes, including the size-dependence of the radiative and non-radiative rates in inhomogeneous broadened samples and interparticle ...of silicon ...
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Comparison of Silicon Nanocrystals Prepared by Two Fundamentally Different Methods
... etched silicon nanocrystals (SiNCs) dissolved in a xylene-based mixture of organic solvents [4] exhibit, after mechano-photo-chemical procedure, dramatic changes of the photoluminescence dynamics ...
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Correlation between matrix structural order and compressive stress exerted on silicon nanocrystals embedded in silicon rich silicon oxide
... Silicon nanocrystals embedded in a silicon oxide matrix were deposited by radio frequency reactive magnetron ...the silicon nanocrystal cores. The stress varies as a function of silicon ...
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Energy band diagram of device grade silicon nanocrystals
... Device grade silicon nanocrystals (NCs) are synthesized using an atmospheric-pressure plasma technique. The Si NCs have a small and well de fi ned size of about 2.3 nm. The synthesis system allows for the ...
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On the nature of the stretched exponential photoluminescence decay for silicon nanocrystals
... porous silicon and then silicon nanocrystals (Si-NCs) has stimulated a great deal of interest in this material mainly due to a number of promising potential applica- tions, like, for instance, light ...
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Silicon quantum dot superlattice solar cell structure including silicon nanocrystals in a photogeneration layer
... in silicon nanostructures, such as silicon nanocrystals [1-4] and silicon nanowires [5-8] for solar cell ...a silicon nanocrystal embedded in a barrier material can make carriers ...
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Silicon nanocrystals: from bio-imager to erbium sensitizer
... After reaction, a clear solution of COOH-terminated nanoparticles was obtained. Luminescent particle suspension was filtered through a 0.2 µm syringe filter (Sartorius Minisart SRP25) and, then, the solvent was removed ...
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The Optical Properties of Silicon Nanocrystals and the Role of Hydrogen Passivation
... individual nanocrystals of III–V and II–VI semiconductors but have only scarcely been used to study light emission from ...of silicon nanostructures was the fabrication and characterisation of single ...
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Optical characterisation of silicon nanocrystals embedded in SiO2/Si3N4 hybrid matrix for third generation photovoltaics
... Self-assembled silicon nanocrystals [Si NCs] embedded in a dielectric matrix are believed to be a promising material for applications in optoelectronics [1-3] and photovoltaic solar cells ...Si ...
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Lateral electrical transport, optical properties and photocurrent measurements in two dimensional arrays of silicon nanocrystals embedded in SiO2
... Silicon nanocrystals (Si NCs) embedded in dielectric matrices such as silicon dioxide or silicon nitride have unique electrical and optical properties which are deter- mined by quantum size ...
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Synthesis of colloidal solutions with silicon nanocrystals from porous silicon
... make silicon a poor light emitter. However, unlike bulk silicon, silicon nanoparti- cles (silicon nanocrystals) have a behavior as a direct bandgap semiconductor ...porous ...
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Photoelectric Properties of Silicon Nanocrystals/P3HT Bulk Heterojunction Ordered in Titanium Dioxide Nanotube Arrays
... Abstract A silicon nanocrystals (Si-ncs) conjugated- polymer-based bulk-heterojunction represents a promising approach for low-cost hybrid solar cells. In this contribution, the bulk-heterojunction is based ...
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Surface Related States in Oxidized Silicon Nanocrystals Enhance Carrier Relaxation and Inhibit Auger Recombination
... oxidized silicon nanocrystals (NCs) and the role that sur- face-related states play in the various relaxation mechanisms over a broad range of photon excitation energy corre- sponding to energy levels below ...
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