0
Why suitable impurities are added to semiconductor depending upon its use?
Wiki User
∙ 9y ago
The idea is that, depending on the impurities added, the semiconductor will be of one of two different types:
* n-type, where the current is conducted by electrons, and
* p-type, where the current is conducted by holes.
Wiki User
∙ 9y ago
Add your answer:
Earn +20 pts
What is the magnitude of the resultant force when forces of magnitude are combined?
-- When forces of unequal magnitude are added, the magnitude of the sum can be anything between the difference and sum of the individual magnitudes, depending on the angle between them. -- When forces of equal magnitude are added, the magnitude of the sum can be anything between zero and double the individual magnitudes, depending on the angle between them.
What are the effects of impurities in boiling and freezing point?
AnswerImpurities tend to increase the boiling point and lower the freezing point.in a way boiling point of salty water > boiling point of fresh waterfreezing properties of salty water < freezing properties of fresh watermelting properties of salty water < melting properties of fresh water.Salt water, contains NaCl, which ionizes into Na and Cl ions. when ions are added to a solvent, such as water, they tend to increase the boiling point and lower the melting point.
How do you increase the speed of a turn?
In general, the way to increase speed of a turn is to add more energy. And, depending on how that energy is added, it can result in either acceleration or change in vector, both technically can be considered a change in speed.
Is water a good conductor?
Wikipedia states that the thermal conductivity of water is 0.6 W/(m·K) (air is 0.025 and silver is 429), electrical conductivity of drinking water is stated as 0.0005 to 0.05 S/m (silver is 63.01 × 106 and air 0.3 to 0.8 × 10-14) Water is a good insulator but poor conductor. But compared with the air, water is the better one. The substances that can easily travel or transfer the heat is conductor such as metals. But in other way, insulator cannot easily travel the heat as fast as the insulator such as water and air. Let's try one experiment to prove this statement. the materials are water, aluminum block. Boil two beaker of water until it reaches the boiling point and make sure both of water are same temperature. then, put the aluminum block in one of the beaker.
Can Vectors be added together scalar quantities cannot?
Vectors can be added to other vectors in the same vector space. Scalars can be added to other scalars if they have the same units. Scalars cannot be added to vectors, nor vice versa, directly.
Diffrentiate n-type and p-type?
When pentavalent impurity is added to pure semiconductor, it is known as N-Type semiconductor. In N-type semiconductor electrons are majority carriers where as holes are minority carriers. impurities such as Arsenic, antimony are added. When trivalent impurity is added to pure semiconductor, it is know as P-type semiconductor. In P-type semiconductor holes are majority carriers whereas electrons are minority carriers. Impurities such as indium, galium are added.
What is doping in conductor?
The process of adding suitable impurities in the intrinsic semiconductor is called doping. The impurity added to the intrinsic semiconductor to increase its conductivity is called dopant. There are some methods of doping in case of a conductor.impurity atoms can be added to the intrinsic semiconductor in different ways discussed below:A very small quantity of impurity atoms is made by diffusing into the high purity molten material such as germanium when the crystal is grown out of melt.Impurity atoms can also be added into the intrinsic semiconductor by heating it in the environment having impurity atoms.Impurity atoms can also be added into the intrinsic semiconductor by bombarding it with the impurity atoms.
What effect do added impurities have on semiconductor conductivity?
It is called as DOPING. Doping is the process in which you add an impurity to a pure semiconductor to increase its conductivity. While doping is done, crystal structure of semiconductor is not disturbed.
How many valance electrons does a semiconductor have?
It is not the number of valence electrons that an insulator has that is important. It is the way the valence electrons are "arranged" in the structure of the material that matters. If not all the valence electrons of a substance are "involved" in the structure of the material, then these electrons are said to be free electrons. They move about in the substance, and are free to contribute to electron flow. The metals are examples. In contrast with this, if all the electrons are bound up in a material, they are not free to support current flow, and the material is said to be an insulator. Said another way, if the valence electrons in a material are in a Fermi energy level that overlaps the conduction band for that material, the material is a conductor. In an insulator, the valence electrons are all in Fermi energy levels that are below the conduction band for that material, and it is an insulator. Applying a voltage to an insulator will not "lift" the valence electrons up into the conduction band to allow them to support current flow.
Why is croylite added to aluminium?
To help remove impurities.
Why is limestone added to the blast furnace during the extraction of iron?
Iron ore contains the impurities sand and clay, which are silicon oxides. Limestone is added to remove these impurities.
What may happen to the boiling point of a substance if there are impurities present. Explain in terms of the nature of impurities.?
it might decrease or increase depends on the impurities added.:D
Does semiconductor lasers and laser diodes are similar?
Semiconductor lasers are made with laser diodes, with added circuitry to measure and regulate the diode current/output.
What is an intrinsic semiconductor and what is an extrinsic semiconductor?
intrinsic semiconductor is an un-doped semiconductor, in which there is no impurities added where as extrinsic semiconductor is a doped semiconductor, which has impurities in it. Doping is a process, involving adding dopant atoms to the intrinsic semiconductor, there by gives different electrical characteristics
What is extrinsic conductor?
Impure semi conductor material are called extrinsic semi conductor as there a small quantity of foreign particle is present. Two types of impurities are added to an extrinsic semi conductor. When impurities belonging to third group are called as trivalent or acceptor impurities such as boron, aluminum, indium or gallium when these impurities are added in pure semi conductors they form p-type semi conductor. And similarly when impurities belonging to group fifth called as penta valent or donor impurities such as arsenic, antimony, bismuth or phosphorus are added to a semi conductor they form N-type semi conductor .
IS WATER IS A GOOD CONDUCTOR?
Distilled water is a bad conductor. Dirty water, or water with impurities added, is a good conductor. It is not the water that matters, but the impurities.
Is water a good a conductor?
Distilled water is a bad conductor. Dirty water, or water with impurities added, is a good conductor. It is not the water that matters, but the impurities.
