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There are many kinds of materials which can be used but currently the element most used to make semiconductors is Silicon. Silicon is not a natural semiconductor so it has to be "doped" with very small amounts of other materials to make it have semiconducting properties. That's enough to say for now, unless someone else wants to just dump a complete answer here! To prepare a full answer to this obvious exam question you should do your own research on the Internet (Wikipedia perhaps?) and/or in technical libraries!
What else can I help you with?
What is the thickness of the depletion layer in a semiconductor?
The thickness of the depletion region or depletion layer (and there are other terms) varies as the design of the semiconductor. The layers in a semiconductor are "grown" (usually by deposition), and this can be controlled. The typical depletion region thickness in an "average" junction diode is about a micron, or 10-6 meters. Junction "construction" presents major engineering considerations to those who design and make semiconductors as there are many different kinds. A link is provided to the section on the width of depletion regions in the Wikipedia article on that topic.
What crystals are used in solar batteries?
A battery is an energy storage device (among other things). A solar battery is a term that might generally be used to describe an electrical storage battery that uses solar energy to charge it up. In that case, the solar cells, those photovoltaic cells that convert the electromagnetic energy of sunlight into electrical energy, are actually semiconductor crystals. Silicon forms crystals, and if we add things to it, we can give it different properties. Semiconductors are those "solid state" devices made usually of silicon which has some other elements added to it to create the actual semiconductor crystal structure. This crystal structure, whether it is a simple transistor or a hugely complex microprocessor, is manufactured with a set of desired properties in mind. In the case of the solar cell, the semiconductor matrix is made to convert light directly into electricity to charge the battery.
Do the properties of a mineral depend on the type of mineral?
Yes each different mineral will have a unique set of physical properties.
What are the four materials used in electronics?
There are several types of material which are used for different -2 circumstances in electronics engineering domain.Widely used semiconductors are- Silicon - for diode ,solar cell, BJT etc. germanium- for photo devices,and BJT for low level signal amplification. GaAs(Gallium Arsenide)- for high frequency devices like tunnel diode Gunn diode. InP & AlGaAs- for LED and others semiconductor material are also available like CdS,SiO2,GaP etc.
Is the diode and semiconductor diodes are the same?
Today, all diodes are semiconductor diodes. However, the first diodes were piles of washers of different metals that together made a diode, and specially constructed vacuum tubes. There may still be markets for other types of diodes in very high voltage circuits, but you or i are unlikely to come in contact with them.
Is iron an example for a semiconductor?
No. Iron is a conductor, as are the majority of other metals. Semiconductors would be like silicon and graphite in the form or carbon nanotubes. Metals = ConductorsSome metalloids=semiconductors.
Do compound semiconductors behave as intrinsic semiconductors?
No, compound semiconductors do not behave as intrinsic semiconductors because they have different band structures due to the combination of different elements. Compound semiconductors have unique electrical properties that make them suitable for specific applications that require different performance characteristics compared to intrinsic semiconductors.
Is silver a semiconductor, or does it have different electrical properties?
Silver is not a semiconductor; it is a metal with different electrical properties. Silver is a good conductor of electricity due to its high conductivity, making it useful in various electrical applications.
What is light and heavy hole in semiconductor?
In semiconductors, a light hole and a heavy hole refer to different energy states that are created in the valence band. Light holes have lower effective mass and higher mobility, while heavy holes have higher effective mass and lower mobility. These terms are important in understanding the electronic band structure of semiconductors and their properties.
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 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 A MATERIAL THAT IS BOTH A CONDUCTOR AND INSULATOR?
metaliods trust me
Why suitable impurities are added to semiconductor depending upon its use?
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.
What is the difference between intrinsic and extrinsic materials?
Intrinsic - A perfect semiconductor (ex: silicon) crystal with no impurities or lattice defects is called an intrinsic semiconductorExtrinsic - an extrinsic material is achieved by introducing impurities into the intrinsic material described above, such as doping silicon with boron atoms, such that the equilibrium carrier concentrations are different from the intrinsic carrier concentration.
Can you explain what it means for a semiconductor to be degenerate and how this affects its electrical properties?
When a semiconductor is degenerate, it means that its electrons have filled up all available energy levels in the conduction band. This leads to a high electron concentration and makes the semiconductor behave more like a metal in terms of its electrical properties. This can result in higher conductivity and different behavior in electronic devices.
What roles do free electrons and holes play in intrinsic semiconductor?
Free electrons and holes are the charge carriers-not only in intrinsic semiconductors(these are the purest form of semiconductors-typically as pure as can be made available with the present technology) but also in extrinsic semiconductors(doped semiconductors).In intrinsic semiconductors,electron-hole pairs are created due to the natural processes like-absorption of heat energy from the surroundingsabsorption of energy from photons.this absorbed energy results in breakdown ofcovalant bonds in intrinsic semiconductors as a result of which electron-hole pairs are created.It is this electron hole pair which is responsible for carrying the current through the intrinsic semiconductor when a potential difference is applied across it.In extrinsic semiconductor the case is slightly different-here, we have-majority charge carriers and minority charge carriers.in an n-type semiconductor-majority charge carriers are the electrons contributed by the pentavalent impurities while the minority charge carriers are the holes which are generated as electron-hole pairs due to natural processes discussed above.in p-type semiconductor-majority charge carriers are the holes contributed by trivalent impuritieswhereas the minority charge carriers are the electronswhich are generated as electron-hole pairs due to natural processes discussed above.these are the majority charge carriers which contribute heavily in the flow of current through the extrinsic semiconductors than the minority charge carriers.I suggest you to please go through mass action law and law of electrical neutrality of semiconductors for better understanding.
What is intrinsic scmicondoctor?
A completely pure semiconductor crystal is called intrinsic, to underline that no substance is inserted in the crystal as impurity. An intrinsic semiconductor has a very low conductivity (it is almost an insulator, even if a current can flow if it undergoes a great voltage difference. Selected intrinsic semiconductors like Indium Phosphate (InP) or Gallium Arsenide (GaAs) are instead very effective in creating photo-stimulated electrical current (that is electrical current due to absorption of incident light) at a specific frequency called resonance frequency of the semiconductor. Other semiconductors (like Silicon, Si) lack this capability. This difference is related to the quantum mechanical behaviour of electrons in the different crystals. A semiconductor crystal where selected substances called dopants (like phosphorous or arsenic) are inserted in the crystal to give it particular properties is called doped semiconductor. Doping is more frequently used to create free charges in the semiconductor and increase conductivity. Depending on the sign of the virtual particle generated by doping in the crystal the doped semiconductor is called p doped (positive carrier generated) or n doped (negative carrier generated).
