Want this question answered?
55k ohm-cm
The two energy bands in which current is produced in Silicon (type of intrinsic semiconductor) are VALENCE BAND & CONDUCTION BAND
Intrinsic conduction is conduction in a pure semiconductor due to electrons moving from negative to positive and an equal number of holes moving in the opposite direction. referenced from Dan O'Regan "Real world leaving cert physics"
Distilled water is a poor conductor. For conduction in any liqiud it must have +ve and -ve charged ions. Water in pure state doesn't dissociate appreciably to give enough ions for electrical conduction. But when soluble ionic compounds are added to it, their ions help water molecules to dissociate and give more ions for good conduction.
Because of molecular vibration the heat transferred through a solid is called CONDUCTION
An intrinsic (pure) silicon crystal at room temperature has sufficient heat (thermal) energy for some valence electrons to jump the gap from the valence band into the conduction band, becoming free electrons.
Pure silicon is a semiconductor.
silicon is a pure substance because it is an element and as we know an element is a pure substance
In pure form Silicon is a solid.
Silicon dioxide is a substance (chemical compound) consisting of one silicon atom and two oxygen atoms.
Silicon used in making chips must be very pure because if it is not, the chip will not work.
Pure silicon is gray in color and has a metallic luster
silicon and germanium
Yes but if it is pure silicon then the paint wont stick to it.
Extrinsic silicon is just silicon that has been doped. So it has different semiconducting propeties from pure (intrinsic) silicon. Why anyone needed to introduce the words intrinsic and extrinsic into the subject always baffled me.
Intrinsic means no dopants. (a term used in semiconductors) So it means the same as pure.
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.