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because it can withstand more temperature compared to germanium and relatively cheaper and it is available abundantly in sand where as germanium is rare
so Si has advantages than Ge though its conductivity is more compared to Si
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∙ 12y ago
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Why don't use germanium in silicon controlled rectifier?
the leakage current of silicon is less when compared with the leakage current of germanium.. hence scr's are made up of silicon than germanium.. hope tis one is useful to u all!- Vignesh.L(engineer, 1st year)
What is the minimum voltage required to turn on a pnp transistor?
If it's a germanium transistor, 0.3 volts. If it's the more common silicon transistor, slightly more than 0.6 volts.
Why Si is used than Ge in semiconductor diode?
silicon diodes Cut in voltage is 0.7 V.but the Germanium cut in voltage is 0.3 V that's why .............
Which is better semiconductor si or ge?
silicon has several properties that make it preferable to germanium, the main ones being:higher junction temperature of operation without damage, 150C vs. only 60Csilicon dioxide is a stable insulator making passivation, inexpensive plastic packages, and monolithic ICs possible vs. germanium oxide is a powdery water soluble solid requiring expensive hermetically sealed metal or glass packagessilicon is more abundant than germanium on the earth
When silicon is doped with phosphorous what type of semiconductor results?
it would be a n-type semiconductor because phosphorus has more valence electrons than silicon does.
Why germanium is better than silicon?
products made by silicon are more stable than those made by germanium
Why leakage current of germanium is more than silicon?
Because the space charge region or depletion region is small in germanium compared to silicon hence leakage current is more in germanium than silicon
Why is silicon a better semiconductor than germanium?
Silicon is a good semi conductor than germanium because silicon is more readily available, cheaper and stable.
Why silicon has low leakage of current as compared to germanium?
Each has four valence electrons, but germanium will at a given temperature have more free electrons and a higher conductivity. Silicon is by far the more widely used semiconductor for electronics, partly because it can be used at much higher temperatures than germanium.
Why silicon is the more semiconductor than germanium?
Silicon is more semiconductor than Germanium because the characteristics of silicon can be easily modified to obtain either a p-type or n-type material.
When a sample of germanium and silicon having same impurity density are kept at room temperature then resistivity of both?
Resistivity of silicon higher than that of germanium
What type of bond is present in germanium?
Germanium atoms are hold together through covalent bonds, although they have more metallic character than carbon and silicon.
Why you use silicon not germanium in SCR?
because lekage current of silicon is less than germenium
What elements are semiconducter?
One element that is semiconducter is Silicon. 2nd answer: One common element used to manufacture a semiconductor is silicon. Germanium has also been widely used, and is more sensitive to tiny voltage changes than silicon. The compound gallium arsenide is very common in the manufacture of semiconductor material, as well.
What is difference between silicon and germanium semiconductors?
Silicon has a larger bandgap energy than germanium, which contributes to higher junction potentials and ability to operate at higher temperatures.
Why is the reverse saturation current of germanium diode more than silicon?
Germanium has four number of shells while Silicon has three number of shell. therefore for germanium less energy is required to move the electron from valence band to conduction band if compared to silicon. So at room temperature for germanium their are more number of electrons present in conduction bond hence more number of holes present in the valence energy band. Due to movement of holes reverse saturation current is produced. Their is more number of hole movement in germanium comparatively therefore reverse saturation current is more than silicon for germanium. You may refer to Electronic Devices and Circuits by Allen Mottershead Regards, Zain Ijaz UCTI, Malaysia Mechatronic Engineer.
Why silicon is preferred over germanium in the fabrication of p-n junction diode?
Germanium diodes are more expensive than silicon ones, germanium is harder to process, germanium cannot be used to make integrated circuits (while early prototype integrated circuits were germanium the wiring between the integrated components cannot be integrated making it too expensive for production), germanium cannot operate with a junction temperature above 60C (silicon will operate up to 150C), and its reverse leakage current is greater. However! Germanium diodes have a lower forward voltage drop than silicon ones do, so they're better for some applications, like radio frequency detection.
