Is silicon a better conductor than germanium?
The potential Barrier of Silicon is more compared to Germanium which makes Ge more conductive as compared to Si. At room temperature, Silicon crystal has fewer free electrons than Germanium crystal. This implies that silicon will have much smaller Collector cut off current than Germanium.
Is silicon a better conductor of electricity?
Silicon is a semiconductor, meaning that it does conduct electricity. Unlike a typical metal, however, silicon gets better at conducting electricity as the temperature increases (metals get worse at conductivity at higher temperatures).
Which has higher resistivity germanium or silicon?
Why is germanium more temperature dependent than silicon?
Germanium is more temperature sensitive than silicon because it has a smaller band gap. Even at moderate temperature, a substantial number of electrons in germanium are produce from thermal generation. For example at about 120 C, the concentration of electrons and holes from thermal generation is > 1E15.
Is silicon a better conductor of electricity than sulfur?
Silicon is a better conductor of electricity than sulfur. Silicon is a solid at room temperature, but argon is a gas. Silicon is less malleable than silver.
Why silicon and germanium are widely used semi conductors and which one has larger conductivity at room temperature Why?
Both silicon and germanium are semiconductors and contains 4 valence electrons. This means that both of them exhibit properties of metals and non-metals. Silicon is cheaper and can be used at higher temperatures to conduct heat and electricity. On the other hand, germanium also has 4 valence electrons like silicon.
Why is silicon not a good conductor?
Pure silicon and germanium are poor conductors of electricity because their outer electrons are tied up in the covalent bonds of the diamondlike framework. They are not conductors in the metallic sense of the word, but are semiconductors.
Why is silicon a good conductor of electricity?
Silicon is a semiconductor. It can conduct electricity as well as behave as an insulator by varying it’s properties. Silicon is currently the most used material in space semiconductor devices. The conductivity of silicon lies between the conductivity limits of conductors and insulators.
Why silicon is preferred over germanium in the manufacturing of SCR?
The variation of Collector cut off current with temperature is less in Silicon compared to Germanium. However, Silicon crystals are not easily damaged by excess heat. Peak Inverse Voltage ratings of Silicon diodes are greater than Germanium diodes. Si is less expensive due to the greater abundance of element.
Which is the best conductor of electricity?
Best to Worst – Which Metal is the Best Conductor of Electricity
| 1 | Silver (Pure) |
|---|---|
| 2 | Copper (Pure) |
| 3 | Gold (Pure) |
| 4 | Aluminum |
| 5 | Zinc |
Why are germanium and silicon not efficient conductors?
Pure silicon and germanium are poor conductors of electricity because their outer electrons are tied up in the covalent bonds of the diamondlike framework. Electrical conductivity decreases as temperature increases in metals because the vibrations of the atoms make passage of electrons more difficult.
What is the difference between germanium and silicon?
Silicon and germanium have four valence electrons but at the given temperature germanium will have more free electrons and higher conductivity than silicon. Silicon is more widely used in the electronic device than germanium since it can be used at a higher temperature.
Which is better conductor silicon or germanium and why?
Answer Wiki. Germanium is a better conductor(although it is a semiconductor), whereas Silicone is a better semiconductor. Both Ge and Si are tetravalent elements i.e. 4 valence electrons in the outer most orbit. Ge was widely used in the earlier days of semiconductors, but these days it is rarely used in new designs.
Which is more expensive, Si or germanium wafer?
Si is less expensive due to the greater abundance of element. The major raw material for Si wafer fabrication is sand and there is lots of sand available in nature. But there is a disadvantage for Silicon over Germanium. The potential Barrier of Silicon is more compared to Germanium.
Why are silicon diodes better than germanium diodes?
At room temperature, Silicon crystal has fewer free electrons than Germanium crystal. This implies that silicon will have much smaller Collector cut off current than Germanium. The variation of Collector cut off current with temperature is less in Silicon compared to Germanium.
Why does germanium have a lesser bandgap than silicon?
This is because the energy bandgap of germanium (0.72 eV) at room temperature is lesser than that of silicon (1.12 eV). Thus, at fixed temperature, the germanium atom requires lesser energy to excite it’s outer orbit electron as compared to silicon.