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Silicon is an indirect band gap semiconductor
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What is diode fabrication?
A simple process sequence for the fabrication of passivated mesa diode arrays for photovoltaic characterization of single/polycrystalline silicon substrates is described. These diodes are used to measure a variety of substrate and cell parameters
What is masking corresponding with IC fabrication?
Masking is an important process in IC fabrication that is used at every step whether its doping, oxidization, metallization, passivization, etc.Masking at its simplest is done as follows:coat the wafer surface with a photosensitive plastic resinlet the plastic resin set (sometimes mild heating assists this step)expose the plastic resin to light through a photomaskdevelop the plastic resin with a chemical that dissolves away the unwanted parts (the undissolved parts of the plastic resin form the mask)perform the desired fabrication stepremove the plastic resin with another chemical to give a clean wafer surfaceMore advanced forms of masking to produce ICs with features too small for ordinary light to resolve use x-rays, electron beams, etc. to expose the plastic resin. The presence of the plastic resin prevents the given fabrication step from affecting that area of the wafer surface while the absence of the plastic resin allows the given fabrication step to affect that area of the wafer surface.In certain fabrication steps the plastic resin would not be a satisfactory mask itself (e.g. steps performed in a furnace). For these steps a layer of silicon dioxide or silicon nitride is grown on the wafer surface and the masking with the plastic resin is used to etch away the silicon dioxide or silicon nitride which is then used as the mask to complete the difficult fabrication step. The silicon dioxide or silicon nitride layer is then removed.A similar masking process is used in etching printed circuit boards.The first known historical examples of masking being used was by metal engravers, who would take the piece of metal to be engraved and paint it with tar. When the tar set they would draw the pattern to be engraved on the tar with sharp tools, exposing bare metal in the scratches. The tar covered metal object was then immersed in a strong acid for a period of time. When removed from the acid the tar would be cleaned off, leaving an acid engraving.
What is ic fabricationm?
Manufacturing of IC is known as Fabrication of IC.... it is fabricated from silica(sand)... Inside an IC u can see a small silicon sheet where the actual circuits are imprinted by a process... from that small sheet wires are drawn and fabricated into a IC......
In an SCR why silicon is used?
Si has highest valence electron .
What was silicon used for in the past?
Silicon was used in the semi- conductivity industry for the past 35 years. i hope this was a little helpful for you. bye and just text me if you need anything else :) 18155735639
Why is silicon dioxide so important in fabrication of silicon detectors?
silicon dioxide is so important in fabrication process because it exhibits good thermal isolation and also having low thermal conductivity and more it has low thermal expansion coefficient.
What is diode fabrication?
A simple process sequence for the fabrication of passivated mesa diode arrays for photovoltaic characterization of single/polycrystalline silicon substrates is described. These diodes are used to measure a variety of substrate and cell parameters
Why germanium is less used than silicon?
Germanium is costly, less abundant and there aren't as many feasible processes for it as compared to Si for fabrication.
What has the author Katrin Seeger written?
Katrin Seeger has written: 'Fabrication of silicon nanostructures'
What has the author Klaus Graff written?
Klaus Graff has written: 'Metal impurities in silicon device fabrication' -- subject(s): Silicon, Defects, Semiconductors, Inclusions
What has the author James Andrew McClean written?
James Andrew McClean has written: 'Fabrication and d.c. properties of metal-n silicon and metal-n silicon P|p|s silicon diodes'
Why silicon is not used for led?
bcz silicon has direct band gap.in intermediatestage its not required any external energy between conduction band and valence band..due to that radiation willbe less..more external energy more more energy radiate...
What has the author Brian Mervyn Armstrong written?
Brian Mervyn Armstrong has written: 'Fabrication and performance of metal-silicon microwave diodes'
Name 4 clamps used for metal fabrication industry?
name 4 clamps used for metal fabrication industry?
What has the author H C Yeh written?
H. C. Yeh has written: 'A fundamental study of aerosol filtration by fibrous filters' 'Improved silicon nitride for advanced heat engines' -- subject(s): Engine parts, Silicon nitride, Optimization, Silicon nitrides, Fabrication, Ceramics
The element used to make semi-comductors computer chips?
Silicon is used in the manufacture of computer chips.
Tools used for fabrication?
hammers and chisels
