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Its called doping.
What else can I help you with?
Why is pure silicon chemically classified as a semiconductor?
because silicon and germanium can use as a both type of material conductor or insulator they found in nature as a non conducting element but we can turn them in to conductor by mixing some impurities and that process is known as damping.
What is the difference between the minority charge carriers and majority charge carriers in diodes?
Majority charge carriers in the N-type side of a semiconductor material are electrons, because N-type semiconductor is doped with a material with 5 valence electrons. Semiconductor materials have 4 valence electrons and hold tightly to 8, so there is a "loose" electron for every atom of dopant. Therefore most of the charge carriers available are electrons. IE, electrons are the majority charge carriers. Minority charge carriers in N-type semiconductor are holes. Only a few holes (lack of an electron) are created by thermal effects, hence holes are the minority carriers in N-type material. The situation is reversed in P-type semiconductor. A material having only 3 valence electrons is doped into the semiconductor. The semiconductor atoms have 4 valence electrons try to hold tightly to 8, so there is a virtual hole created by a "missing" electron in the valence orbit. This acts as if it were a positive charge carrier. Most of the charge carriers are these holes, therefore in P-type semiconductor holes are the majority charge carrier. Again, reverse situation to minority charge carriers. Some electrons are loosened by thermal effects, they are the minority charge carriers in P-type semiconductor.
What is the effect of temperature on an intrinsic semiconductor?
An intrinsic semiconductor is basically a pure semiconductor, though some might argue that a small amount of doping can still yield an intrinsic semiconductor. In the crystal structure of this material, there are very few electrons crossing the band gap into the conduction band, and this stuff doesn't want to conduct much current. But as temperature increases, more electron-hole pairs will appear as electrons jump that band gap and take up places in the conduction band. And if you guessed that increasing temperature will permit the intrinsic semiconductor to conduct current flow a bit better, you'd be right. The intrinsic semiconductor has a positive temperature coefficient. More heat, more conduction under the same conditions.
What is antimony What is boron?
Elements. Both are some of the elements used as dopants in the making of semiconductor devices.
What is a LDR?
A L.D.R is a light dependant resistor A photo resistor or Light Dependent Resistor or CDS Cell is an electronic component whose resistance decreases with increasing incident light intensity. It can also be referred to as a photo conductor. A photo resistor is made of a high resistance semiconductor. If light falling on the device is of high enough frequency, photons absorbed by the semiconductor give bound electrons enough energy to jump into the conduction band. The resulting free electron (and its hole partner) conduct electricity, thereby lowering resistance. A photoelectric device can be either intrinsic or extrinsic. An intrinsic semiconductor has its own charge carriers and is not an efficient semiconductor, egg. silicon. In intrinsic devices, the only available electrons are in the valence band, and hence the photon must have enough energy to excite the electron across the entire band gap. Extrinsic devices have impurities added, which have a ground state energy closer to the conduction band - since the electrons don't have as far to jump, lower energy photons (i.e. longer wavelengths and lower frequencies) are sufficient to trigger the device. If a sample of silicon has some of its atoms replaced by phosphorus atoms(impurities), there will be extra electrons available for conduction.
What is the process of adding some impurities to semiconductor material?
Its called doping.
What is mean by doping?
Doping is a process of adding some impurity in pure material or pure semiconductor.
What is mean by doping procesess?
Doping is the intentional introduction of impurities into a semiconductor material to alter its electrical properties. This process can change the conductivity of the material, allowing it to be used in the production of electronic devices such as transistors and diodes. Different types of doping, such as n-type (donor) and p-type (acceptor) doping, can create regions of positive or negative charge within the material.
Is silicon a extrinsic or intrinsic semiconductor?
silicon is intrinsic semiconductor until we add some impurities in it. the impurities are either of group 3 called acceptors which make p type or of group 5 called donors which make n type semiconductor.
Is germanium is a form of semiconductor material?
Yes it is. Some of the earliest semiconductor devices were made using it.
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.
Is doping is used to increase the conductivity of intrinsic semi conductor material?
Doping a semiconductor provides additional charge carriers to the material. The dopant atoms are easily ionized, and this provides the semiconductor with either free electrons in the conduction band or electron vacancies (or holes) in the valence band, both of which allow the semiconductor to conduct electricity.
Why is pure silicon chemically classified as a semiconductor?
because silicon and germanium can use as a both type of material conductor or insulator they found in nature as a non conducting element but we can turn them in to conductor by mixing some impurities and that process is known as damping.
What is the principle of semiconductor laser?
Semiconductor lasers are diodes which are electrically pumped. Recombination of electrons and holes created by the applied current introduces optical gain. Reflection from the ends of the crystal form an optical resonator, although the resonator can be external to the semiconductor in some designs.
A substance that will conduct electricity only under certain conditions?
Semiconductor materials like silicon can conduct electricity under certain conditions, such as by adding impurities to create n-type or p-type semiconductors. These materials have a conductivity intermediate between that of conductors and insulators, allowing them to be used in electronic devices like transistors.
Can germanium bend?
Germanium is a semiconductor material and does not have the physical properties necessary to bend like a flexible material. However, it can be engineered into thin layers or structures that may have some flexibility, but it is not a material known for its bendability.
What are the effects of impurities in water?
The result of impurities is that you create 'super material' because many pure materials are weak. So scientists often mix materials to create better materials that soot our needs better. e.g. stainless steel
