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Arsenic doped silicon wafers are used as the starting point for computer chips, memory chips, transistors, diodes, LEDs and many other devices. Arsenic is an n-type dopant in silicon, causing it to have an abundance of electrons (n for "negative"). A junction or diode is formed when an n-type region is in contact with a p-type region. A p-type region is formed with Boron for example as the dopant. Here there is a dearth of electrons (or equivalently an abundance of holes or absences of electrons). The holes act like positive carrier (p-type). The entire computer chip consists of lots of n and p regions that form circuits, transistors, etc. The wafer starts out arsenic doped, and then the various other dopants and additives are implanted or diffused into the surface. Then silicon dioxide is grown on top of the wafer which is insulating. Metal is desposited on top of that to create the wires interconnecting the various transistors on a chip. The wafer is diced up into the chips that get put in a package that you see on your computer board. You end up with an entire computer chip that started as an arsenic wafer.
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Is arsenic used in nature?
Arsenic can be used as a pest repellent.
Is arsenic used in Medicines?
from what i read in the encyclopedia yes arsenic is used in some medicines, but i think you combine it with another element!
What is the difference between phosphorus doped and gallium doped semiconductors?
phosphorus doped semiconductor will be N type.gallium doped semiconductor will be P type.There are also other differences due to the different size of the dopant atoms.
What element is used as rat poison?
arsenic
Which poisonous element is used in medicines and rat poison?
arsenic
What kind of wafers is used at Intel to make computer chips?
Silicone Wafers
Erbium-doped optical fiber is used for what purpose?
It is used to make Erbium doped fibre amplifiers (EDFA) and also used to fabricate DFB lasers.
Is arsenic used in nature?
Arsenic can be used as a pest repellent.
Why only wafers are used instead of any other material?
Your question cannot be answered because you did not say what the wafers are being used for.
What is conductivity of n type semiconductor?
What's the silicon doped with? Antimony? Arsenic? Phosphrus? And, much more importantly, how heavily is the silicon doped? Are there 1020 electrons per meter-3 or is 1025 electrons per meter-3 more the order of the day? Graphite is used as a conductor in some electrochemical cells. Processed and compressed graphite is used as brush material in electric motors. Without more information, the best answer that can be offered is a bit general. What is the electrical conductivity of n-type silicon graphite? Pretty good.
Why arsenic is used in ships?
Arsenic can be an alloying component for bronze.
Explain why arsenic-doped silicon conducts electric current better than pure silicon?
Pure silicon is intrinsic. It has a high resitivity which means it is a poor conductor of electricity in this state. The dopant that is introduced during the doping process can be arsenic, boron or phosphorous. These are the traditional choices to dope the intrinsically pure silicon. After the pure silicon becomes doped its electrical properties change. The main change is it has a lower resistivity and will conduct electricity. This is why silicon is called a semiconductor.
Was arsenic used for torture?
Arsenic and his compounds are strong poisons used from many time by murderers.
Why is pure silicon deliberately made impure again when it is used to make computer chips?
Silicon is essentially an insulator when pure. When generating wells or electron barriers, silicon is Doped with Boron, Phosphorus and Arsenic. The details of how this works can be found in numerous books on IC manufacturing.
16 Who used arsenic as a treatment for toothaches?
In ancient China, arsenic was used as treatment for toothaches. They used arsenic pills placed between the teeth to help relieve pain.
How is arsenic used today?
Today, Arsenic is used by the neo-nazi group known as the Nazis. In the 40's Arsenic was used as a poison, but today it's used by the Chinese as a plastic substitute.
What is the duration of Yesterday's Guys Used No Arsenic?
The duration of Yesterday's Guys Used No Arsenic is 1.83 hours.
