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silicon diodes Cut in voltage is 0.7 V.but the Germanium cut in voltage is 0.3 V that's why .............
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Which of the two semiconductor material Si or Ge has larger conductivity at room temperature?
Ge has higher conductivity than Si. Because at room temperature the electron and hole mobility for Ge is larger than those of Si. Another explanation is the lower band gap of Ge than Si.
What is more referred to use si diode or a ge diode?
silicon diode is preferred more when compared with germanium diode because in silicon diode the operating voltage is 0.7v where as in germanium diode the operating voltage is 0.3v , germanium is temperature sensitive so it can be easily destroyed by increasing temperature hence silicon diode is preferred more
Give some Examples of direct and indirect band gap semiconductors?
direct band gap-semiconductor in which the bottom of the conduction band and the top of the valence band occur at the momentum k=0;in the case of d.b.s. energy released during band-to-band electron recombination with a hole is converted primarily into radiation (radiant recombination); wavelength of emitted radiation is determined by the energy gap of semiconductor; examples of d.b.s. GaAs, InP, ZnS, ZnSs, CdS, CdSe etc. indirect bandgap semiconductor --semiconductor in which bottom of the conduction band does not occur at effective momentum k=0, i.e. is shifted with respect to the top of the valence band which occurs at k=0; energy released during electron recombination with a hole is converted primarily into phonon; e.g. Si, Ge, GaP, GaAsp ,Ge etc, .
Why Ge and Si is not used for making LEDs?
Ge and si are not used for Making led's because these two emitts less amount in form of light and larger amount in form of heat.
What is meant by cut off voltage in diode?
Cutoff voltage is the point at which the battery is fully discharged. This is usually the point at which the device will shut itself off.
What are the difference between Ge and Si diode?
the energy required to break covalent bond in si is 1.1ev and in ge is 0.7ev
Which of the two semiconductor material Si or Ge has larger conductivity at room temperature?
Ge has higher conductivity than Si. Because at room temperature the electron and hole mobility for Ge is larger than those of Si. Another explanation is the lower band gap of Ge than Si.
Why sillicon diode is used in most of application?
silicon is the most commonly used semiconductor. As it is abundant and inexpensive. However, it also has the advantage of a great oxide layer (silicon dioxide) which serves as as dielectric in many applications, and as a result it is relatively easy to make devices out of Si. It's this oxide layer that makes silicon more common than germanium, which does not readily form an oxide layer because Ge has less affinity with oxygen when compared to Si, even though the there are many charge carriers in Ge as compared to Si its the ability to form the oxide layer which makes Si more preferable than Ge
Mention cut-in-voltage for Si and Ge diode?
0.6-0.7 V for Si at room temp. and 0.3 for Ge at room temp.
What is more referred to use si diode or a ge diode?
silicon diode is preferred more when compared with germanium diode because in silicon diode the operating voltage is 0.7v where as in germanium diode the operating voltage is 0.3v , germanium is temperature sensitive so it can be easily destroyed by increasing temperature hence silicon diode is preferred more
If you want to dope Ga As to make a p-type semiconductor with an element to replace As which elements would you pick?
Ge
What is ge germanium used for?
An Important Use Of Germanium Is That It's A Semi-Conductor (Semiconductor.) A Semi-Conductor Will Only Conduct Things, Such As Heat, So Well, And Only So Many Of Times You Try.
What is the threshold voltage of silicon and germanium?
In semiconductor uses, such as diodes and transistors, the forward voltage drop for Silicon (Si) is a little less than 0.7 volts, while the FVD for Germanium (Ge) is about 0.3 volts.
What is the Difference between Si and Ge diodes?
The significant operational difference between a Si diode and a Ge diode is that Si diodes have a knee voltage of 0.7V needed to allow current flow and Ge diodes have an operational voltage of 0.3V to allow current flow.
What is value of dynamic resistance oe p-n junction diode?
Rd= Vt*c/I Vt=KT/q, K=Boltzmann constant C= constant 2 for si 1 for Ge I current through the diode
Where would one find genuine GE Parts?
Genuine GE parts can be found if a GE car dealer is asked about them. They are going to be more expensive than any of the substitutes that can be used but that can be worthwhile in the long run.
How is p type semiconductor formed?
p-type or n-type semiconductor alone is of very limited use in chips -- you can only make a thin-film resistor or parallel-plate capacitor with it. You also need the opposite type, the n-type semiconductor, to make junction diodes and MOS or bipolar transistors, which are essential components in an integrated circuit. ================================
