The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
With the widespread use of solar energy, the grid-connected photovoltaic (PV) systems based on solid state transformer (SST) have considerable prospect. This paper presents the design and demonstration of a three-phase 800-V/10-kV 1-MW SST for grid-connected PV system. The topology of the 10-kV/1-MW SST is designed as a modular structure containing the dual active bridge (DAB) converter and full bridge...
In this work, microwave annealing is explored to tune the Schottky barrier height between NiSi and Si via boron and arsenic dopant segregation using silicide as diffusion source scheme. The microwave annealing is found to be able to obtain equivalent electron and hole Schottky barrier heights at significantly lower temperature (>100 °C) compared with conventional rapid thermal annealing. A plausible...
Heating of silicon substrates featuring different resistivity values by microwave annealing is investigated. The absorption of microwave energy for silicon wafers is found to be consistent with ohmic conduction loss theory. The strongest absorption occurs when the resistivity was around 10 Ω·cm. As the carrier concentration and the conductivity of silicon increase with temperature, the absorption...
The efficiency and the service life of the photovoltaic modules are affected by the surface defects. Therefore, it is critical to detect the photovoltaic modules whether it is qualified or not before assembling into solar panels. This paper applies a method to detect micro-cracked defects in photovoltaic modules using electroluminescence (EL) technology and image processing. After applying forward...
The Ni/epi-SiGe/Si layer stacks were annealed by microwave annealing and rapid thermal annealing via halogen lamp heating. Sheet resistance, X-ray diffraction and micro-Raman spectroscopy results indicate that the reaction and diffusion rates of the related Ni, Si and Ge atoms were accelerated for the samples annealed by microwave annealing, compared with the samples annealed by rapid thermal annealing...
Influence of mixing Co on the structural stability of ultra-thin NiPt silicide film is investigated in this paper. Experiments of variation of the total thickness and Ni : Co : Pt ratio of the Ni, Co and Pt mixtures are carefully designed and carried out. Compared with the 6-nm NiPt sample silicide film, films of Ni, Co and Pt mixtures with similar total metal thickness demonstrate ~150 °C higher...
Micellles of poly(cyclohexyl metharylate)-block-poly(2-vinylpyridine) (PCMA-b-P2VP) block copolymer in methanol were used as nanoreactors to fabricate FeCl3 nanoparticles. Then the FeCl3-loaded micelles solution was used as an ink to print films with polydimethylsiloxane (PDMS) stamps, different morphologies of the FeCl3-loaded micellar films were left onto silicon substrates after printed. After...
To further enrich aluminum content in coal fly ash so as to reduce the cost of it as a resource for industrial aluminum extraction, a novel process was developed to separate silicon from the rest of fly ash. The process was conducted by treating the coal fly ash with high concentration sodium hydroxide solution to dissolve silicon as sodium silicate at room temperature under atmosphere. The sodium...
In this paper, three different composite dielectric layers which consist of Si3N4 and SiO2 layer have been fabricated by thermal oxidation and RF magnetron sputtering technique. They are, 1) single-dielectric-layer of silicon nitride (Si3N4), 2) single-dielectric-layer of silicon-oxide (SiO2) with the embedment of Si-nanocrystals (Si-NC), 3) triple-dielectric-layer consisting of SiO2/SiO2+Si-NC/SiO...
We report a stochastic dynamical synapse for VLSI spiking neural systems. The compactness of the circuit, real-time stochastic behavior, and probability tuning make it well suitable to implement stochastic synapses with variety of dynamics. The stochastic synapse implements short-term depression (STD) using a subtractive single release model. Preliminary experimental results show a good match with...
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.